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Hello All,
My monitor's native resolution is 5120x1440 @ 120. But when the KVM is used on a Linux distro 1920x1080 @ 60 even though it is supposed for 4K. xrandr only returns 1920x1080.
I've tried to run cvt with the above resolution but then the screen turns black. If I try a lower resolution I get 'configure crtc 0 failed'.
Screen 0: minimum 8 x 8, current 5120 x 1440, maximum 32767 x 32767
DP1 disconnected primary (normal left inverted right x axis y axis)
Identifier: 0x42
Timestamp: 84423264
Subpixel: unknown
Clones: HDMI1
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
Content Protection: Undesired
supported: Undesired, Desired, Enabled
Colorspace: Default
supported: Default, RGB_Wide_Gamut_Fixed_Point, RGB_Wide_Gamut_Floating_Point, opRGB, DCI-P3_RGB_D65, BT2020_RGB, BT601_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, BT2020_CYCC, BT2020_YCC
max bpc: 12
range: (6, 12)
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
subconnector: Unknown
supported: Unknown, VGA, DVI-D, HDMI, DP, Wireless, Native
link-status: Good
supported: Good, Bad
non-desktop: 0
range: (0, 1)
DP2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x43
Timestamp: 84423264
Subpixel: unknown
Clones:
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
Colorspace: Default
supported: Default, RGB_Wide_Gamut_Fixed_Point, RGB_Wide_Gamut_Floating_Point, opRGB, DCI-P3_RGB_D65, BT2020_RGB, BT601_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, BT2020_CYCC, BT2020_YCC
max bpc: 12
range: (6, 12)
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
subconnector: Unknown
supported: Unknown, VGA, DVI-D, HDMI, DP, Wireless, Native
link-status: Good
supported: Good, Bad
non-desktop: 0
range: (0, 1)
HDMI1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x44
Timestamp: 84423264
Subpixel: unknown
Clones: DP1
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
Content Protection: Undesired
supported: Undesired, Desired, Enabled
max bpc: 12
range: (8, 12)
content type: No Data
supported: No Data, Graphics, Photo, Cinema, Game
Colorspace: Default
supported: Default, SMPTE_170M_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, opRGB, BT2020_CYCC, BT2020_RGB, BT2020_YCC, DCI-P3_RGB_D65, DCI-P3_RGB_Theater
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
link-status: Good
supported: Good, Bad
non-desktop: 0
range: (0, 1)
HDMI2 connected 1920x1080+0+0 (0x48) normal (normal left inverted right x axis y axis) 1190mm x 340mm
Identifier: 0x45
Timestamp: 84423264
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff004c2d990f32373930
321e0103807722782aa2a1ad4f46a724
0e5054bfef80714f810081c08180a9c0
b3009500d1c01a6800a0f0381f403020
3a00a9504100001a000000fd0018781e
a03c000a202020202020000000fc0043
3439524739780a2020202020000000ff
00484e4b4e4330303534390a202003d7
f0027000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
0000000000000000000000000000009e
2a9debf572e75a0fe8fff5b9d8bab1af
b7fbaa3f96937c4f449f6abdda02ea1e
555630cb6590aacdc48b2d9e38140e39
79bf7ba795df2052d0979ac3cf9dbec6
4617aa45ab06d01b4201674f8336cf6a
d8ef09a6070e7c34e1174426b7ac789d
dbace90e19df6099854ae44e16d6d48c
50112a3e698dbe9beea62e71dbb65b05
ccb4ac805ed7e5428173af037387e84c
Content Protection: Undesired
supported: Undesired, Desired, Enabled
max bpc: 12
range: (8, 12)
content type: No Data
supported: No Data, Graphics, Photo, Cinema, Game
Colorspace: Default
supported: Default, SMPTE_170M_YCC, BT709_YCC, XVYCC_601, XVYCC_709, SYCC_601, opYCC_601, opRGB, BT2020_CYCC, BT2020_RGB, BT2020_YCC, DCI-P3_RGB_D65, DCI-P3_RGB_Theater
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
link-status: Good
supported: Good, Bad
non-desktop: 0
range: (0, 1)
1920x1080 (0x48) 148.500MHz -HSync -VSync *current
h: width 1920 start 2008 end 2052 total 2200 skew 0 clock 67.50KHz
v: height 1080 start 1084 end 1089 total 1125 clock 60.00Hz
1680x1050 (0x1b0) 119.000MHz +HSync -VSync
h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz
v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz
1600x900 (0x1b1) 108.000MHz +HSync +VSync
h: width 1600 start 1624 end 1704 total 1800 skew 0 clock 60.00KHz
v: height 900 start 901 end 904 total 1000 clock 60.00Hz
1280x1024 (0x1b2) 135.000MHz +HSync +VSync
h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz
1280x1024 (0x1b3) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1440x900 (0x1b4) 88.750MHz +HSync -VSync
h: width 1440 start 1488 end 1520 total 1600 skew 0 clock 55.47KHz
v: height 900 start 903 end 909 total 926 clock 59.90Hz
1280x800 (0x1b5) 71.000MHz +HSync -VSync
h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 49.31KHz
v: height 800 start 803 end 809 total 823 clock 59.91Hz
1152x864 (0x1b6) 108.000MHz +HSync +VSync
h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz
v: height 864 start 865 end 868 total 900 clock 75.00Hz
1280x720 (0x1b7) 74.250MHz +HSync +VSync
h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz
v: height 720 start 725 end 730 total 750 clock 60.00Hz
1024x768 (0x1b8) 78.750MHz +HSync +VSync
h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz
v: height 768 start 769 end 772 total 800 clock 75.03Hz
1024x768 (0x1b9) 75.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz
v: height 768 start 771 end 777 total 806 clock 70.07Hz
1024x768 (0x1ba) 65.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
832x624 (0x1bb) 57.284MHz -HSync -VSync
h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz
v: height 624 start 625 end 628 total 667 clock 74.55Hz
800x600 (0x1bc) 50.000MHz +HSync +VSync
h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz
v: height 600 start 637 end 643 total 666 clock 72.19Hz
800x600 (0x1bd) 49.500MHz +HSync +VSync
h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz
v: height 600 start 601 end 604 total 625 clock 75.00Hz
800x600 (0x1be) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
800x600 (0x1bf) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
640x480 (0x1c0) 31.500MHz -HSync -VSync
h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz
v: height 480 start 481 end 484 total 500 clock 75.00Hz
640x480 (0x1c1) 31.500MHz -HSync -VSync
h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz
v: height 480 start 489 end 492 total 520 clock 72.81Hz
640x480 (0x1c2) 30.240MHz -HSync -VSync
h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz
v: height 480 start 483 end 486 total 525 clock 66.67Hz
640x480 (0x1c3) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 490 end 492 total 525 clock 59.94Hz
720x400 (0x1c4) 28.320MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz
v: height 400 start 412 end 414 total 449 clock 70.08Hz
5120x1440_60.00 (0x1cd) 624.500MHz -HSync +VSync
h: width 5120 start 5496 end 6048 total 6976 skew 0 clock 89.52KHz
v: height 1440 start 1443 end 1453 total 1493 clock 59.96Hz
3840x1440_60.00 (0x26f) 468.250MHz -HSync +VSync
h: width 3840 start 4120 end 4536 total 5232 skew 0 clock 89.50KHz
v: height 1440 start 1443 end 1453 total 1493 clock 59.94Hz
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x46
Timestamp: 84423264
Subpixel: no subpixels
Clones:
CRTCs: 2
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
non-desktop: 0
supported: 0, 1
I'd like to run the native resolution 'through' the KVM switch on a Linux arch environment.
Thanks for your time and attention,
Last edited by rlocone0 (2021-07-21 02:09:37)
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for clarity :
KVM = Keyboard, Video , Mouse hardware switch ?
Your monitor is a DQHD also known as super ultra-wide ?
2 possible causes come to mind
- your videocard can't drive that resolution
- cables / kvm switch are not high enough specced to transfer so much data
What videocard / driver ?
Is the monitor resolution detected correctly when it's connected directly to the pc ?
you appear to be using a hdmi cable, which type is it ?
see https://en.wikipedia.org/wiki/HDMI#Cables
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Last edited by Lone_Wolf (2021-07-21 13:33:50)
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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for clarity :
KVM = Keyboard, Video , Mouse hardware switch ?CKLau 4Kx2K@60 4 port
Your monitor is a DQHD also known as super ultra-wide ?
Samsung LC49RG90SSNXZA
2 possible causes come to mind
- your videocard can't drive that resolution
- cables / KVM switch are not high enough specced to transfer so much dataWhat videocard / driver ?
Graphics: Device-1: Intel HD Graphics 530 driver: i915 v: kernel Display: server: X.Org 1.20.12 driver: loaded: intel unloaded: fbdev,modesetting,vesa resolution: 1920x1080~60Hz OpenGL: renderer: Mesa Intel HD Graphics 530 (SKL GT2) v: 4.6 Mesa 21.1.5
Is the monitor resolution detected correctly when it's connected directly to the pc ?
HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1190mm x 340mm 3840x1080 59.97 + 3840x2160 30.00 25.00 24.00 29.97 23.98 5120x1440 29.98 2560x1440 59.95 2560x1080 60.00 59.94 1920x1080 60.00* 60.00 50.00 59.94 1680x1050 59.88 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.90 1280x800 59.91 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 5120x1440_60.00 59.96 3840x1440_60.00 59.94 VIRTUAL1 disconnected (normal left inverted right x axis y axis)
you appear to be using a hdmi cable, which type is it ?
Cables that came with the KVM.
see https://en.wikipedia.org/wiki/HDMI#Cables
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Lone_Wolf wrote:Is the monitor resolution detected correctly when it's connected directly to the pc ?
HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1190mm x 340mm 3840x1080 59.97 + 3840x2160 30.00 25.00 24.00 29.97 23.98 5120x1440 29.98 2560x1440 59.95 2560x1080 60.00 59.94 1920x1080 60.00* 60.00 50.00 59.94 1680x1050 59.88 1600x900 60.00 1280x1024 75.02 60.02 1440x900 59.90 1280x800 59.91 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 5120x1440_60.00 59.96 3840x1440_60.00 59.94 VIRTUAL1 disconnected (normal left inverted right x axis y axis)
There's no sign of 5120x1440 @ 120 HZ , So the answer is no .
The monitor should have come with a hdmi cable from samsung , probably labeled Premium High Speed or even Ultra High Speed .
Have you tested with that cable ?
As for the kvm switch :
that would be the CKLau-64Hua as shown at https://www.amazon.com/CKLau-Control-Co … B07HRBBLWN ?
If that's the model you have there's bad news : Its max resolution is stated as 4096x2160@60Hz, way below what you need.
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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There's no sign of 5120x1440 @ 120 HZ , So the answer is no .
The monitor should have come with an HDMI cable from Samsung , probably labeled Premium High Speed or even Ultra High Speed .
Have you tested with that cable ?
Correct, tested with cable it came with. Still no change in resolution. I've also tested a cable that is marked with 8K @ 120.
As for the KVM switch :
that would be the CKLau-64Hua as shown at https://www.amazon.com/CKLau-Control-Co … B07HRBBLWN ?
The model # that I have is exactly the same but with -3N. This is the 3rd KVM switch I've tried. Not sure where else to turn.
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xrandr --output HDMI2 --mode 4096x2160_60.00
xrandr: Configure crtc 0 failed
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It looks like you may have 2 issues and the kvm switch is secondary for now .
(even a perfect 32k kvm switch won't solve the primary issue).
Lone_Wolf wrote:There's no sign of 5120x1440 @ 120 HZ , So the answer is no .
The monitor should have come with an HDMI cable from Samsung , probably labeled Premium High Speed or even Ultra High Speed .
Have you tested with that cable ?Correct, tested with cable it came with. Still no change in resolution. I've also tested a cable that is marked with 8K @ 120.
There are reports of intel HD graphics integrated gpus not being able to drive dual QHD monitors (5120x1440) .
Specs vary between processor family and generation, but here's an example of a Core I5-6300HQ with a HD 530 :
https://www.intel.com/content/www/us/en … tions.html
What processor does your system have ?
If unsure post sudo dmesg | grep smpboot .
Last edited by Lone_Wolf (2021-07-24 19:08:10)
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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I've tested the KVM with another Arch system with an AMD GPU dedicated graphics not on-board and I'm still having the same issues. At this point for me and my workflow, I'd be willing to pay for what will work.
System: Host: arco Kernel: 5.13.5-zen1-1-zen x86_64 bits: 64 Desktop: bspwm 0.9.10 Distro: ArcoLinux
Machine: Type: Desktop System: Micro-Star product: MS-7B98 v: 1.0 serial: N/A
Mobo: Micro-Star model: Z390-A PRO (MS-7B98) v: 1.0 serial: J616234999 UEFI: American Megatrends v: 1.81
date: 10/23/2019
CPU: Info: 6-Core Intel Core i5-9400F [MCP] speed: 4001 MHz min/max: 800/4100 MHz
Graphics: Device-1: AMD Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X] driver: amdgpu v: kernel
Display: server: X.Org 1.20.12 driver: loaded: amdgpu,ati unloaded: fbdev,modesetting,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: AMD Radeon RX 460 Graphics (POLARIS11 DRM 3.41.0 5.13.5-zen1-1-zen LLVM 12.0.1)
v: 4.6 Mesa 21.1.5
Network: Device-1: Intel Ethernet I219-V driver: e1000e
Device-2: Intel 82576 Gigabit Network driver: igb
Device-3: Intel 82576 Gigabit Network driver: igb
Drives: Local Storage: total: 15.98 TiB used: 76 GiB (0.5%)
Info: Processes: 246 Uptime: 17h 30m Memory: 23.42 GiB used: 6.55 GiB (28.0%) Shell: Bash inxi: 3.3.06
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Most sites with specs fro the RX460 (including AMD site) don't list resolutions but I found one that does : https://www.gpuzoo.com/GPU-AMD/Radeon_RX_460.html
It lists 4096x3120 as max for HDMI, but 7680 x 4320 for DP 1.4 .
Using https://en.wikipedia.org/wiki/DisplayPort indicates the best cable for DP 1.4 is HBR3 with a max bandwidth of 25.92 GbIT/s .
Your 5120x1440@120 resolution is not mentioned there, but twice that (5120x2880@120) is and needs 45.66 Gbit/s .
That indicates your screen would need half as much, or 22.83 Gbit/s .
I suggest you try to connect the screen directly to the RX460 using a DisplayPort cable of HBR3 specification or better.
Once that is verified to work at 5120x1440, 120 Hz with your screen direclty connected you can then look for a kvm switch with DisplayPort connectors that can handle that bandwidth.
one example is https://www.delock.com/produkte/S_11482/merkmale.html .
Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.
(A works at time B) && (time C > time B ) ≠ (A works at time C)
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