Arch Linux

hay

Member

Registered: 2022-12-13

Posts: 17

[SOLVED] Dual monitors on xfce4

Hi,

I'm currently running xfce4 as a desktop environment, but for some reason the second monitor does not show.

xrandr only shows 1 monitor, and settings>display does the same.

Both monitors work on other OS's, and if I change the HDMI port, they both work, but not simultaneously.

Any suggestions for what might be the issue?

Last edited by hay (2023-12-06 01:30:43)

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V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,232

Re: [SOLVED] Dual monitors on xfce4

Graphics card(s)? Generally if xrandr only shows 1 then there's nothing xfce can do. Post your xorg log and

xrandr -q
lspci -k

https://wiki.archlinux.org/title/List_o … n_services

hay

Member

Registered: 2022-12-13

Posts: 17

Re: [SOLVED] Dual monitors on xfce4

Thanks for answering.

Nothing interesting in xorg as far as I can see.

tail -f ~/.local/share/xorg/Xorg.0.log
[   151.903] (II) No input driver specified, ignoring this device.
[   151.903] (II) This device may have been added with another device file.
[   151.912] (**) Cooler Master Technology Inc. MasterKeys Lite L Combo Keyboard(KB) Consumer Control: Applying InputClass "libinput keyboard catchall"
[   151.912] (II) Using input driver 'libinput' for 'Cooler Master Technology Inc. MasterKeys Lite L Combo Keyboard(KB) Consumer Control'
[   151.912] (II) systemd-logind: returning pre-existing fd for /dev/input/event4 13:68
[   151.912] (**) Cooler Master Technology Inc. MasterKeys Lite L Combo Keyboard(KB) Consumer Control: always reports core events
[   151.912] (**) Option "Device" "/dev/input/event4"
[   151.912] (II) libinput: Cooler Master Technology Inc. MasterKeys Lite L Combo Keyboard(KB) Consumer Control: is a virtual subdevice
[   151.912] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.1/0003:2516:0042.0002/input/input4/event4"
[   151.912] (II) XINPUT: Adding extended input device "Cooler Master Technology Inc. MasterKeys Lite L Combo Keyboard(KB) Consumer Control" (type: KEYBOARD, id 15)

xrandr -q

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096
None-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1920x1080     60.00*+

lspci -k

00:00.0 Host bridge: Intel Corporation Comet Lake-S 6c Host Bridge/DRAM Controller (rev 03)
	DeviceName:  Onboard Realtek Ethernet
	Subsystem: Acer Incorporated [ALI] Comet Lake-S 6c Host Bridge/DRAM Controller
	Kernel driver in use: skl_uncore
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 03)
	Subsystem: Acer Incorporated [ALI] 6th-10th Gen Core Processor PCIe Controller (x16)
	Kernel driver in use: pcieport
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
	Subsystem: Acer Incorporated [ALI] Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Comet Lake PCH-V USB Controller
	Subsystem: Acer Incorporated [ALI] Comet Lake PCH-V USB Controller
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci
00:14.2 Signal processing controller: Intel Corporation Comet Lake PCH-V Thermal Subsystem
	Subsystem: Acer Incorporated [ALI] Comet Lake PCH-V Thermal Subsystem
00:16.0 Communication controller: Intel Corporation Comet Lake PCH-V HECI Controller
	Subsystem: Acer Incorporated [ALI] Comet Lake PCH-V HECI Controller
	Kernel driver in use: mei_me
	Kernel modules: mei_me
00:17.0 SATA controller: Intel Corporation 400 Series Chipset Family SATA AHCI Controller
	DeviceName:  Onboard Intel SATA Controller
	Subsystem: Acer Incorporated [ALI] 400 Series Chipset Family SATA AHCI Controller
	Kernel driver in use: ahci
00:1b.0 PCI bridge: Intel Corporation Comet Lake PCI Express Root Port #21 (rev f0)
	Subsystem: Intel Corporation Comet Lake PCI Express Root Port
	Kernel driver in use: pcieport
00:1c.0 PCI bridge: Intel Corporation Comet Lake PCI Express Root Port #05 (rev f0)
	Subsystem: Acer Incorporated [ALI] Comet Lake PCI Express Root Port
	Kernel driver in use: pcieport
00:1c.5 PCI bridge: Intel Corporation Device a395 (rev f0)
	Subsystem: Acer Incorporated [ALI] Device 142c
	Kernel driver in use: pcieport
00:1f.0 ISA bridge: Intel Corporation B460 Chipset LPC/eSPI Controller
	Subsystem: Acer Incorporated [ALI] B460 Chipset LPC/eSPI Controller
00:1f.2 Memory controller: Intel Corporation Cannon Lake PCH Power Management Controller
	Subsystem: Acer Incorporated [ALI] Cannon Lake PCH Power Management Controller
00:1f.3 Audio device: Intel Corporation Comet Lake PCH-V cAVS
	Subsystem: Acer Incorporated [ALI] Comet Lake PCH-V cAVS
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel, snd_soc_avs, snd_sof_pci_intel_cnl
00:1f.4 SMBus: Intel Corporation Comet Lake PCH-V SMBus Host Controller
	Subsystem: Acer Incorporated [ALI] Comet Lake PCH-V SMBus Host Controller
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801
01:00.0 VGA compatible controller: NVIDIA Corporation TU116 [GeForce GTX 1660 SUPER] (rev a1)
	Subsystem: PC Partner Limited / Sapphire Technology TU116 [GeForce GTX 1660 SUPER]
	Kernel modules: nouveau
01:00.1 Audio device: NVIDIA Corporation TU116 High Definition Audio Controller (rev a1)
	Subsystem: PC Partner Limited / Sapphire Technology TU116 High Definition Audio Controller
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel
01:00.2 USB controller: NVIDIA Corporation TU116 USB 3.1 Host Controller (rev a1)
	Subsystem: PC Partner Limited / Sapphire Technology TU116 USB 3.1 Host Controller
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci
01:00.3 Serial bus controller: NVIDIA Corporation TU116 USB Type-C UCSI Controller (rev a1)
	Subsystem: PC Partner Limited / Sapphire Technology TU116 USB Type-C UCSI Controller
	Kernel driver in use: nvidia-gpu
	Kernel modules: i2c_nvidia_gpu
02:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller 980
	Subsystem: Samsung Electronics Co Ltd NVMe SSD Controller 980
	Kernel driver in use: nvme
	Kernel modules: nvme
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
	Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
	Kernel driver in use: r8169
	Kernel modules: r8169
04:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31)
	Subsystem: Lite-On Communications Inc Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter
	Kernel driver in use: ath10k_pci
	Kernel modules: ath10k_pci

I can always change to plasma which have worked before. No preferences as of yet.

EDIT:

I tried installing KDE, but no success, the other monitor still does not show up

Last edited by hay (2023-12-04 01:14:02)

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seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,054

Re: [SOLVED] Dual monitors on xfce4

Who said anything about "tail", post the log.

But

01:00.0 VGA compatible controller: NVIDIA Corporation TU116 [GeForce GTX 1660 SUPER] (rev a1)
	Subsystem: PC Partner Limited / Sapphire Technology TU116 [GeForce GTX 1660 SUPER]
	Kernel modules: nouveau

Nothing's driving your GPU, so you installed nvidia-utils which blacklists nouveau but no kernel module (for the running kernel) and are most likely down w/ the vesa or fbdev drivers.

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hay

Member

Registered: 2022-12-13

Posts: 17

Re: [SOLVED] Dual monitors on xfce4

I edited /usr/lib/modprobe.d/nvidia-utils.conf and commented out the blacklisting of nouveau

Then I added the nouveau module into /etc/mkinitcpio.conf

Both monitors now work , thanks for the help

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seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,054

Re: [SOLVED] Dual monitors on xfce4

Using nouveau on a Turing chip is maybe less than a great idea and you could have just uninstalled the nvidia drivers…

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hay

Member

Registered: 2022-12-13

Posts: 17

Re: [SOLVED] Dual monitors on xfce4

Using nouveau on a Turing chip is maybe less than a great idea and you could have just uninstalled the nvidia drivers…

Oh... I'll keep an eye out for eventual problems that might arise. And I explicitly removed the nvidia drivers, does not seem like there is a  need for them on this setup. Hopefully everything works.

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