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#1 2023-10-26 09:43:51

gastru
Member
Registered: 2023-10-26
Posts: 10

Dual Monitors MST problem

Hey!

I'm having some issues with a couple of monitors I just got, LS27A60PUUUXEN. I use a dell dock to connect to my laptop via USB-C and from the dock I connect to the first monitor with DP, then from that monitors DP-out I connect to the second one's DP.
I have a similar setup at work where the daisy chain is working but at home I can't get it to work at all.

DP version on both monitors is 1.2. When the DP-out is set to SST both monitors work but are detected as one so they are mirrored.
When I set DP-out to MST they are detected as individual but the monitor screens go blank and they then turn off cause they don't receive any signal.

If I don't daisy chain and just connect each monitor to the dock separately it works as intended but I really want to get it working with daisy chain.

I have installed mesa and  xf86-video-intel

I'm pretty new to arch and don't know where to start digging so I'm hoping that someone here might help me and point me in the right direction smile

"sudo dmesg | grep intel" doesn't show anything

XPS 13 9310

Motherboard                 Dell Inc. 0MRT12
Processor                   11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz
Operating System            Arch Linux running XFCE4
Kernel                      Linux 6.5.8-arch1-1 (x86_64)
Graphics                    Intel TigerLake-LP GT2[Iris Xe Graphics]
Session Display Server      The X.Org Foundation 21.1.9
$ uname -a
Linux arch 6.5.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 19 Oct 2023 22:52:14 +0000 x86_64 GNU/Linux
$ xrandr
Screen 0: minimum 8 x 8, current 4480 x 1440, maximum 32767 x 32767
eDP1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 290mm x 180mm
   3840x2400     59.99 +  48.00
   3840x2160     59.97
   3200x1800     59.96    59.94
   2880x1620     59.96    59.97
   2560x1600     59.99    60.00    59.97
   2560x1440     59.96    59.95
   2048x1536     60.00
   1920x1440     60.00
   1856x1392     60.01
   1792x1344     60.01
   2048x1152     59.90    59.91
   1920x1200     59.88*   60.00    59.95
   1920x1080     59.96    59.93
   1600x1200     60.00
   1680x1050     60.00    59.95    59.88
   1400x1050     59.98
   1600x900      59.95    59.82
   1280x1024     60.02
   1400x900      60.00    59.96    59.88
   1280x960      60.00
   1368x768      59.88    59.85
   1280x800      59.81    60.00    59.91
   1280x720      59.86    59.74
   1024x768      60.00
   1024x576      59.90    59.82
   960x540       59.63    59.82
   800x600       60.32    56.25
   864x486       59.92    59.57
   640x480       59.94
   720x405       59.51    58.99
   640x360       59.84    59.32
DP1 disconnected (normal left inverted right x axis y axis)
DP1-1 disconnected primary (normal left inverted right x axis y axis)
DP1-1-1 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
   2560x1440     75.00*+  59.95
   1920x1080     60.00    50.00    59.94
   1680x1050     59.95
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.89
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    50.00    59.94
   1024x768      75.03    70.07    60.00
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   720x576       50.00
   720x480       60.00    59.94
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
DP1-1-1-1 disconnected (normal left inverted right x axis y axis)
DP1-1-1-8 disconnected (normal left inverted right x axis y axis)
DP1-1-8 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
   2560x1440     75.00*+  59.95
   1920x1080     60.00    50.00    59.94
   1680x1050     59.95
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.89
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    50.00    59.94
   1024x768      75.03    70.07    60.00
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   720x576       50.00
   720x480       60.00    59.94
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
DP1-2 disconnected (normal left inverted right x axis y axis)
DP1-2-1 disconnected (normal left inverted right x axis y axis)
DP1-2-8 disconnected (normal left inverted right x axis y axis)
DP1-3 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
DP4 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
$ sudo journalctl --since "1 day ago" | grep intel
Oct 25 16:12:26 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 16:12:26 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 16:12:26 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:05:56 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 17:05:56 arch kernel: intel_pstate: HWP enabled
Oct 25 17:05:56 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 17:05:56 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 17:05:56 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 17:05:56 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 17:05:57 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 17:05:57 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 17:05:57 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 17:05:57 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 25 17:05:57 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:05:57 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 17:05:57 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:05:57 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 17:05:57 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 17:05:57 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 17:05:57 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 17:05:57 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:05:57 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:05:57 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 25 17:05:58 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:05:58 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:05:58 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 17:05:58 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 17:05:59 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 17:05:59 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:05:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:12:54 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:12:54 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 17:12:54 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:13:47 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 17:13:47 arch kernel: intel_pstate: HWP enabled
Oct 25 17:13:47 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 17:13:47 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 17:13:48 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 17:13:48 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 17:13:48 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 17:13:48 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 25 17:13:48 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 17:13:48 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 17:13:48 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 17:13:48 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:13:49 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 17:13:49 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:13:49 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 17:13:49 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 17:13:49 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 17:13:49 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:13:49 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:13:49 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 25 17:13:49 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:13:49 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:13:49 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 17:13:49 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 17:13:50 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 17:13:50 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:13:50 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:39:17 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:39:18 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 17:39:18 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:46:59 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 17:46:59 arch kernel: intel_pstate: HWP enabled
Oct 25 17:46:59 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 17:46:59 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 17:46:59 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 17:47:00 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 25 17:47:00 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:47:00 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 17:47:00 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:47:00 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 17:47:00 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 17:47:00 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 17:47:00 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:47:00 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:47:00 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 25 17:47:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:47:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:47:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 17:47:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 17:47:01 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:47:01 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 17:47:01 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:47:02 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:47:02 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:47:02 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:56:09 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:56:10 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 17:56:10 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 17:57:25 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 17:57:25 arch kernel: intel_pstate: HWP enabled
Oct 25 17:57:25 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 17:57:25 arch kernel: Btrfs loaded, crc32c=crc32c-intel, zoned=yes, fsverity=yes
Oct 25 17:57:25 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 17:57:26 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 17:57:26 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 17:57:26 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 17:57:26 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 17:57:26 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 17:57:26 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 17:57:26 arch kernel: caller __uncore_imc_init_box+0xd8/0x120 [intel_uncore] mapping multiple BARs
Oct 25 17:57:26 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:57:26 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 17:57:26 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 17:57:26 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 17:57:26 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 17:57:26 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 17:57:27 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:57:27 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:57:27 arch kernel: intel_tcc_cooling: Programmable TCC Offset detected
Oct 25 17:57:27 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 17:57:27 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 17:57:27 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 17:57:27 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 17:57:28 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:57:28 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 17:57:28 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 18:06:34 arch sudo[26953]:  ### : TTY=pts/2 ; PWD=/home/### ; USER=root ; COMMAND=/usr/bin/pacman -S --config /etc/pacman.conf -- extra/mesa extra/xf86-video-intel
Oct 25 18:06:39 arch sudo[27149]:  ### : TTY=pts/2 ; PWD=/home/### ; USER=root ; COMMAND=/usr/bin/pacman -D -q --asexplicit --config /etc/pacman.conf -- xf86-video-intel
Oct 25 18:08:17 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 18:08:18 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 18:08:18 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 18:09:09 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 18:09:09 arch kernel: intel_pstate: HWP enabled
Oct 25 18:09:09 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 18:09:09 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 18:09:10 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 18:09:10 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 18:09:10 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 18:09:10 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 18:09:10 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 18:09:10 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 18:09:10 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 25 18:09:10 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 18:09:10 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 18:09:10 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 18:09:10 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 18:09:10 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 18:09:10 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 18:09:11 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 18:09:11 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 18:09:11 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 25 18:09:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 18:09:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 18:09:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 18:09:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 18:09:12 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 18:09:12 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 18:09:12 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 18:09:39 arch sudo[7273]:  ### : TTY=pts/2 ; PWD=/home/### ; USER=root ; COMMAND=/usr/bin/pacman -S --config /etc/pacman.conf -- extra/mesa extra/xf86-video-intel
Oct 25 18:09:45 arch sudo[7435]:  ### : TTY=pts/2 ; PWD=/home/### ; USER=root ; COMMAND=/usr/bin/pacman -D -q --asexplicit --config /etc/pacman.conf -- xf86-video-intel
Oct 25 18:13:14 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 18:13:14 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 25 18:13:14 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 18:14:57 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 25 18:14:57 arch kernel: intel_pstate: HWP enabled
Oct 25 18:14:57 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 25 18:14:57 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 25 18:14:58 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 25 18:14:58 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 25 18:14:58 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 25 18:14:58 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 18:14:58 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 25 18:14:58 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 25 18:14:58 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 25 18:14:58 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 25 18:14:58 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 25 18:14:58 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 25 18:14:58 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 25 18:14:58 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 18:14:58 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 18:14:58 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 25 18:14:58 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 25 18:14:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 25 18:14:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 25 18:14:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 25 18:14:59 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 25 18:14:59 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 25 18:15:00 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 25 18:15:00 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 25 18:15:00 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0

Last edited by gastru (2023-10-26 11:11:20)

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#2 2023-10-26 10:38:16

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 25,234

Re: Dual Monitors MST problem

Remove xf86-video-intel. Reboot, try again.

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#3 2023-10-26 10:53:58

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

V1del wrote:

Remove xf86-video-intel. Reboot, try again.

The issue remains after I've tried this unfortunately

$ sudo journalctl --since "20 min ago" | grep intel
Oct 26 12:45:48 arch sudo[1674256]:  ### : TTY=pts/5 ; PWD=/home/### ; USER=root ; COMMAND=/usr/bin/pacman -R --config /etc/pacman.conf -- xf86-video-intel
Oct 26 12:47:03 arch systemd[1]: Stopping Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 26 12:47:04 arch systemd[1]: systemd-backlight@backlight:intel_backlight.service: Deactivated successfully.
Oct 26 12:47:04 arch systemd[1]: Stopped Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 26 12:48:08 arch kernel: intel_pstate: Intel P-state driver initializing
Oct 26 12:48:08 arch kernel: intel_pstate: HWP enabled
Oct 26 12:48:08 arch kernel: intel_pmc_core INT33A1:00:  initialized
Oct 26 12:48:08 arch kernel: BTRFS info (device dm-0): using crc32c (crc32c-intel) checksum algorithm
Oct 26 12:48:09 arch kernel: intel-hid INTC1051:00: platform supports 5 button array
Oct 26 12:48:09 arch kernel: intel-lpss 0000:00:15.0: enabling device (0000 -> 0002)
Oct 26 12:48:09 arch kernel: caller __uncore_imc_init_box+0xfa/0x150 [intel_uncore] mapping multiple BARs
Oct 26 12:48:09 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 26 12:48:09 arch kernel: intel-lpss 0000:00:15.1: enabling device (0000 -> 0002)
Oct 26 12:48:09 arch kernel: intel_rapl_msr: PL4 support detected.
Oct 26 12:48:09 arch kernel: intel_rapl_common: Found RAPL domain package
Oct 26 12:48:09 arch kernel: intel_rapl_common: Found RAPL domain core
Oct 26 12:48:09 arch kernel: intel_rapl_common: Found RAPL domain uncore
Oct 26 12:48:09 arch kernel: intel_rapl_common: Found RAPL domain psys
Oct 26 12:48:09 arch kernel: intel-lpss 0000:00:19.0: enabling device (0000 -> 0002)
Oct 26 12:48:10 arch kernel: intel-lpss 0000:00:19.1: enabling device (0000 -> 0002)
Oct 26 12:48:10 arch kernel: snd_hda_intel 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 26 12:48:10 arch kernel: snd_hda_intel 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 26 12:48:10 arch kernel: intel_tcc_cooling: TCC Offset locked
Oct 26 12:48:10 arch kernel: intel-lpss 0000:00:1e.0: enabling device (0000 -> 0002)
Oct 26 12:48:10 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if info 0x040100
Oct 26 12:48:10 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Digital mics found on Skylake+ platform, using SOF driver
Oct 26 12:48:10 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: enabling device (0000 -> 0002)
Oct 26 12:48:10 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DSP detected with PCI class/subclass/prog-if 0x040100
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: use msi interrupt mode
Oct 26 12:48:11 arch systemd[1]: Starting Load/Save Screen Backlight Brightness of backlight:intel_backlight...
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: hda codecs found, mask 5
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: using HDA machine driver skl_hda_dsp_generic now
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: DMICs detected in NHLT tables: 2
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: unknown sof_ext_man header type 3 size 0x30
Oct 26 12:48:11 arch systemd[1]: Finished Load/Save Screen Backlight Brightness of backlight:intel_backlight.
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware info: version 2:2:0-57864
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Firmware: ABI 3:22:1 Kernel ABI 3:23:0
Oct 26 12:48:11 arch kernel: sof-audio-pci-intel-tgl 0000:00:1f.3: Topology: ABI 3:22:1 Kernel ABI 3:23:0

Might also add that I have tried the setup on a separate laptop where it works so I can rule out any cable issues

Last edited by gastru (2023-10-26 11:11:55)

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#4 2023-10-26 14:07:02

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

sudo journalctl --since "20 min ago" | grep intel

That's mostly useless, the relevant strings would be somewhere along drm, dp, vga, mst, crt and i915
Please post your complete system journal for the boot: 

sudo journalctl -b | curl -F 'file=@-' 0x0.st

Please post your Xorg log, https://wiki.archlinux.org/title/Xorg#General (after/when using MST)

Does it work when you set the outputs to a lower mode (eg. 1024x768@60Hz)?

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#5 2023-10-26 14:56:30

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

seth wrote:

Please post your complete system journal for the boot: 

sudo journalctl -b | curl -F 'file=@-' 0x0.st

http://0x0.st/HyHy.txt

Please post your Xorg log, https://wiki.archlinux.org/title/Xorg#General (after/when using MST)

http://0x0.st/HyH0.txt

seth wrote:

Does it work when you set the outputs to a lower mode (eg. 1024x768@60Hz)?

Just tried and the problem remains, SST works but as soon as I put DP out to MST the screens go dark

Tell me if I misunderstood something, but I think those are the logs you were asking about

Last edited by gastru (2023-10-26 14:59:12)

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#6 2023-10-26 15:20:39

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

Only DP-1-1-8 shows up in the xorg log?
And DP-1-1-8 and DP-1-1-1 seem to be clones.

Just tried and the problem remains

What's the resulting "xrandr -q" output?

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#7 2023-10-26 15:32:22

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

Only DP-1-1-8 shows up in the xorg log?
And DP-1-1-8 and DP-1-1-1 seem to be clones.

Yeah seems wierd only DP-1-1-8 shows as connected

Just tried and the problem remains

What's the resulting "xrandr -q" output?

$ xrandr -q
Screen 0: minimum 320 x 200, current 3968 x 1200, maximum 16384 x 16384
eDP-1 connected 1920x1200+0+0 (normal left inverted right x axis y axis) 288mm x 180mm
   3840x2400     59.99 +  48.00
   3840x2160     60.00    60.01    59.98    59.97
   3200x1800     59.96    59.94
   2880x1620     59.96    59.97
   2560x1600     59.99    59.97
   2560x1440     59.99    59.99    59.96    59.95
   2048x1536     60.00
   1920x1440     60.00
   1856x1392     60.01
   1792x1344     60.01
   2048x1152     59.99    59.98    59.90    59.91
   1920x1200     59.88*   59.95
   1920x1080     60.01    59.97    59.96    59.93
   1600x1200     60.00
   1680x1050     59.95    59.88
   1400x1050     59.98
   1600x900      59.99    59.94    59.95    59.82
   1280x1024     60.02
   1400x900      59.96    59.88
   1280x960      60.00
   1440x810      60.00    59.97
   1368x768      59.88    59.85
   1280x800      59.99    59.97    59.81    59.91
   1280x720      60.00    59.99    59.86    59.74
   1024x768      60.04    60.00
   960x720       60.00
   928x696       60.05
   896x672       60.01
   1024x576      59.95    59.96    59.90    59.82
   960x600       59.93    60.00
   960x540       59.96    59.99    59.63    59.82
   800x600       60.00    60.32    56.25
   840x525       60.01    59.88
   864x486       59.92    59.57
   700x525       59.98
   800x450       59.95    59.82
   640x512       60.02
   700x450       59.96    59.88
   640x480       60.00    59.94
   720x405       59.51    58.99
   684x384       59.88    59.85
   640x400       59.88    59.98
   640x360       59.86    59.83    59.84    59.32
   512x384       60.00
   512x288       60.00    59.92
   480x270       59.63    59.82
   400x300       60.32    56.34
   432x243       59.92    59.57
   320x240       60.05
   360x202       59.51    59.13
   320x180       59.84    59.32
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-1-8 connected 1024x768+1920+71 (normal left inverted right x axis y axis) 597mm x 337mm
   2560x1440     75.00 +  59.95
   1920x1080     60.00    50.00    59.94
   1680x1050     59.95
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.89
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    50.00    59.94
   1024x768      75.03    70.07    60.00*
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   720x576       50.00
   720x480       60.00    59.94
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
DP-1-1-1 connected 1024x768+2944+71 (normal left inverted right x axis y axis) 597mm x 337mm
   2560x1440     75.00 +  59.95
   1920x1080     60.00    50.00    59.94
   1680x1050     59.95
   1600x900      60.00
   1280x1024     75.02    60.02
   1440x900      59.89
   1280x800      59.81
   1152x864      75.00
   1280x720      60.00    50.00    59.94
   1024x768      75.03    70.07    60.00*
   832x624       74.55
   800x600       72.19    75.00    60.32    56.25
   720x576       50.00
   720x480       60.00    59.94
   640x480       75.00    72.81    66.67    60.00    59.94
   720x400       70.08
DP-1-2 disconnected (normal left inverted right x axis y axis)
DP-1-3 disconnected (normal left inverted right x axis y axis)

Here they show up as connected and also in the UI
Screenshot-2023-10-26-17-26-40.png

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#8 2023-10-26 16:02:24

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

seth wrote:

Only DP-1-1-8 shows up in the xorg log?
And DP-1-1-8 and DP-1-1-1 seem to be clones.

Just tried and the problem remains

What's the resulting "xrandr -q" output?

Just restarted lightdm and now it looks like it says connected on the DP-1-1-1 as well, where do you see that they are clones?
http://0x0.st/HyX2.txt

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#9 2023-10-26 19:57:20

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

0x0.st is currently down, please upload the file to ix.io

The original xrandr had

DP1-1-1 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
DP1-1-8 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm

this has changed w/ the switch to XGA

DP-1-1-8 connected 1024x768+1920+71 (normal left inverted right x axis y axis) 597mm x 337mm
DP-1-1-1 connected 1024x768+2944+71 (normal left inverted right x axis y axis) 597mm x 337mm

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#10 2023-10-27 06:22:02

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

0x0.st is currently down, please upload the file to ix.io

0x0.st seems to be up again

The original xrandr had

DP1-1-1 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm
DP1-1-8 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 600mm x 340mm

this has changed w/ the switch to XGA

DP-1-1-8 connected 1024x768+1920+71 (normal left inverted right x axis y axis) 597mm x 337mm
DP-1-1-1 connected 1024x768+2944+71 (normal left inverted right x axis y axis) 597mm x 337mm

Sorry but I don't quite get what you mean?

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#11 2023-10-27 06:42:52

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

The format is WxH+X+Y, look at the +X+Y

Yes, both outputs are in the xorg log - the other one was perhaps from an SST stint?
Does MST work if you skip the dock?

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#12 2023-10-27 07:26:02

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

seth wrote:

The format is WxH+X+Y, look at the +X+Y

Yes, both outputs are in the xorg log - the other one was perhaps from an SST stint?
Does MST work if you skip the dock?

Ah ok, I moved the displays around a bit in the second one, for the first xandr I didn't, both logs are from having MST active
My laptop only has USB-C unfortunately and I don't have a dongle to try connecting it directly

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#13 2023-10-27 13:45:16

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

I have a similar setup at work where the daisy chain is working but at home I can't get it to work at all.

Do you have a chance to mix that HW, eg. introduce the home notebook and/or dock to your workplace setup or use parts of the HW from your workplace (notebook, dock) at home?

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#14 2023-10-27 15:00:23

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

seth wrote:

I have a similar setup at work where the daisy chain is working but at home I can't get it to work at all.

Do you have a chance to mix that HW, eg. introduce the home notebook and/or dock to your workplace setup or use parts of the HW from your workplace (notebook, dock) at home?

I use the same HW as I have at work, bringing the dock and laptop with me
So the only difference is the monitors, starting to think that it is some firmware for the monitors that are faulty but then again they do work in MST mode with my macbook pro

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#15 2023-10-27 19:37:30

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

Can you get hands on a different dock and/or try the dock w/ the macbook (or are you already using said dock w/ the macbook)?

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#16 2023-10-30 10:40:02

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

seth wrote:

Can you get hands on a different dock and/or try the dock w/ the macbook (or are you already using said dock w/ the macbook)?

Yeah its the same dock that I use with the macbook and it works with the monitors in MST mode

I also updated the dock firmware during the weekend but the issue still remains, thinking I have to give up the idea of daisychaining and just use two cables

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#17 2023-10-31 17:14:12

gastru
Member
Registered: 2023-10-26
Posts: 10

Re: Dual Monitors MST problem

UPDATE

I just tried using USB-C/thunderbolt from the dock to the first monitor and then from DP-out to the next monitor DP-in and it works

should I mark this as solved even though the main issue is not solved(dock -> DP-in, DP-out -> DP-in) since my problem is solved?

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#18 2023-10-31 18:04:25

seth
Member
From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 76,074

Re: Dual Monitors MST problem

"[SIDESTEPPED]" ? Posts cannot contain only capital letters.

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