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<3
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Joined: 21 Oct 2004
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 Posted: Sun Aug 14, 2022 1:23 pm Post subject: Can not set monitor refresh rate |
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Good morning, I am trying to change my monitor's refresh rate to the proper refresh rate. I have a UHD monitor that supports a 120 hz refresh rate connected via a HDMI cable.
Following the Gentoo-wiki Xrandr guide it says that I need to run the cvt command (x11-libs/libxcvt) with the following parameters
| Code: | # cvt 3840 2160 120.00
# 3840x2160 119.98 Hz (CVT) hsync: 277.87 kHz; pclk: 1498.25 MHz
Modeline "3840x2160_120.00" 1498.25 3840 4192 4616 5392 2160 2163 2168 2316 -hsync +vsync |
the wiki says to add everything after "Modeline" to xrandr
I need to specify the output since this is on a laptop and I have multiple monitors I need to also specify the output so I include the "--output HDMI-1-0" parameter.
but when I do I get the following error:
| Code: | # xrandr --output HDMI-1-0 --newmode "3840x2160_120.00" 1498.25 3840 4192 4616 5392 2160 2163 2168 2316 -hsync +vsync
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 139 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 56
Current serial number in output stream: 56 |
Can someone please help me to set the refresh rate? |
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NeddySeagoon
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| Posted: Sun Aug 14, 2022 1:57 pm Post subject: |
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<3,
Please post your Xorg.0.log.
That should show what your monitor reports its capabilities as.
You may get different answers over DP and HDMI.
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NeddySeagoon
Computer users fall into two groups:-
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<3
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NeddySeagoon
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| Posted: Sun Aug 14, 2022 3:31 pm Post subject: |
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<3,
Your display does not advertise any 4k 120Hz modes. That's a problem.
The nVidia GPU can do it but its not connected to the display, so the Intel GPU needs to support that refresh rate too.
What is the make and model of the display?
We need to read the fine print in the specification. Often, 4k 120Hz modes are only supported on DP inputs and you said you were using HDMI.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
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<3
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| Posted: Sun Aug 14, 2022 4:06 pm Post subject: |
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| that's weird because in windows I can set 3840x2160 at 120hz over hdmi no problem. I have the Dough/Eve Spectrum 4k monitor. |
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CooSee
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| Posted: Sun Aug 14, 2022 4:20 pm Post subject: |
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is the firmware current of your (monster) monitor?
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NeddySeagoon
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| Posted: Sun Aug 14, 2022 4:25 pm Post subject: |
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<3,
That's confirms the hardware capability ... end to end.
The display is HDMI 2.1, so that's OK but we really knew that from your Windows test.
In Windows, what display timings are used?
We had a topic like this a few weeks ago.
-- edid --
Alderlake integrated graphics doesn't output 4k@120Hz
I'm not sure that its the same problem.[/topic]
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
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<3
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| Posted: Sun Aug 14, 2022 5:32 pm Post subject: |
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| CooSee wrote: | | is the firmware current of your (monster) monitor? |
107 |
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Anon-E-moose
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Joined: 23 May 2008
Posts: 6098
Location: Dallas area
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| Posted: Sun Aug 14, 2022 5:55 pm Post subject: |
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| Code: | [ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-0): connected
[ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-0): Internal TMDS
[ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-0): 600.0 MHz maximum pixel clock
[ 8.454] (--) NVIDIA(GPU-0):
[ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-1): connected
[ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-1): Internal DisplayPort
[ 8.454] (--) NVIDIA(GPU-0): EVE ES07D03 (DFP-1): 2660.0 MHz maximum pixel clock
[ 8.454] (--) NVIDIA(GPU-0):
[ 8.457] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 8.457] (--) NVIDIA(GPU-0): DFP-2: Internal TMDS
[ 8.457] (--) NVIDIA(GPU-0): DFP-2: 165.0 MHz maximum pixel clock
[ 8.457] (--) NVIDIA(GPU-0):
[ 8.545] (II) NVIDIA(G0): Validated MetaModes:
[ 8.545] (II) NVIDIA(G0): "NULL"
[ 8.545] (II) NVIDIA(G0): Virtual screen size determined to be 640 x 480
[ 8.605] (WW) NVIDIA(G0): Cannot find size of first mode for EVE ES07D03 (DFP-0); cannot
[ 8.605] (WW) NVIDIA(G0): compute DPI from EVE ES07D03 (DFP-0)'s EDID.
[ 8.605] (==) NVIDIA(G0): DPI set to (75, 75); computed from built-in default |
| Code: | [ 8.711] (II) NVIDIA(G0): ACPI: failed to connect to the ACPI event daemon; the daemon
[ 8.711] (II) NVIDIA(G0): may not be running or the "AcpidSocketPath" X
[ 8.711] (II) NVIDIA(G0): configuration option may not be set correctly. When the
[ 8.711] (II) NVIDIA(G0): ACPI event daemon is available, the NVIDIA X driver will
[ 8.711] (II) NVIDIA(G0): try to use it to receive ACPI event notifications. For
[ 8.711] (II) NVIDIA(G0): details, please see the "ConnectToAcpid" and
[ 8.711] (II) NVIDIA(G0): "AcpidSocketPath" X configuration options in Appendix B: X
[ 8.711] (II) NVIDIA(G0): Config Options in the README.
[ 8.727] (II) NVIDIA(G0): Setting mode "NULL" |
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NeddySeagoon
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| Posted: Sun Aug 14, 2022 8:37 pm Post subject: |
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Anon-E-moose,
Yeah, its Optimus. | Code: | | [ 8.545] (II) NVIDIA(G0): Virtual screen size determined to be 640 x 480 |
That's a feature.
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NeddySeagoon
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<3
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| Posted: Sun Aug 14, 2022 9:32 pm Post subject: |
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| I am unsure of what that all means, can you please ELI5? |
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NeddySeagoon
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| Posted: Sun Aug 14, 2022 9:54 pm Post subject: |
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<3,
You have an Optimus graphics system. Its one and a half graphics cards.
The nVidia chipset is not connected to the display.
The Intel GPU is complete and shares its pixel buffer with the nVidia GPU.
For low power/performance use, only the Intel GPU is used.
For better performance at the cost of more power (shorter battery life) the nVidia GPU draws into the pixel buffer and the Inter GPU does the screen refresh.
Any attempt to use the nVidia GPU on its own will result in a black screen as its snot connected to any displays.
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NeddySeagoon
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Anon-E-moose
Watchman
Joined: 23 May 2008
Posts: 6098
Location: Dallas area
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| Posted: Sun Aug 14, 2022 10:30 pm Post subject: |
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I'm not sure about all of what's going on, as I've never owned an optimus rig
but
DFP-0 limit is 600MHz (not sure what TDMS is) limit is just past 4k@60
DPF-1 limit is 2660 Mhz (internal displayport)
and it's looking at DFP-0 for the edid setting.
Just not sure how to make it properly use the right connetors in gentoo (windows is lots easier, it's true P'n'P.
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<3
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Posts: 1081
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| Posted: Thu Aug 18, 2022 6:49 am Post subject: |
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| NeddySeagoon wrote: | <3,
You have an Optimus graphics system. Its one and a half graphics cards.
The nVidia chipset is not connected to the display.
The Intel GPU is complete and shares its pixel buffer with the nVidia GPU.
For low power/performance use, only the Intel GPU is used.
For better performance at the cost of more power (shorter battery life) the nVidia GPU draws into the pixel buffer and the Inter GPU does the screen refresh.
Any attempt to use the nVidia GPU on its own will result in a black screen as its snot connected to any displays. |
thanks for that explaination, I understand this. What I don't understand is why I have no trouble setting this monitor to 120hz in windows yet not in Gentoo.
Last edited by <3 on Sun Aug 21, 2022 2:16 pm; edited 1 time in total |
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NeddySeagoon
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| Posted: Thu Aug 18, 2022 7:33 am Post subject: |
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<3,
As part of its startup, Xorg asks the display for its capabilities.
The display returns a list of modelines that appear in Xorg.0.log as a fragment of mine, I get
| Code: | [ 58.983] (II) AMDGPU(0): Printing probed modes for output DisplayPort-2
[ 58.983] (II) AMDGPU(0): Modeline "3840x2160"x60.0 533.25 3840 3888 3920 4000 2160 2163 2168 2222 +hsync -vsync (133.3 kHz eP)
[ 58.983] (II) AMDGPU(0): Modeline "3840x2160"x30.0 262.75 3840 3888 3920 4000 2160 2163 2168 2191 +hsync +vsync (65.7 kHz e)
[ 58.983] (II) AMDGPU(0): Modeline "3840x2160"x24.0 209.75 3840 3888 3920 4000 2160 2163 2168 2185 +hsync -vsync (52.4 kHz e)
[ 58.983] (II) AMDGPU(0): Modeline "2560x1440"x60.0 241.50 2560 2608 2640 2720 1440 1443 1448 1481 +hsync -vsync (88.8 kHz e)
... |
By default, Xorg picks the first one.
There are a number of problems with that.
First, your 120Hz mode may not be first. It should still appear in xrandrs list though.
Second, your 120Hz modes may not be listed at all. In that case, you need to supply the modeline.
Windows can do this as it has its own list of displays and modelines.
You can extract the modeline from Windows and tell Xorg all about it. Then you may be able to use it in Gentoo.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
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<3
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| Posted: Sun Aug 21, 2022 2:26 pm Post subject: |
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| Thanks NeddySeagoon, what is also confusing is that this is a fairly new Gentoo re-install. In my previous install I was able to get 120hz working fairly easily. No Xorg configuration neccissary, I just set the refresh rate in KDE/plasma system settings and it worked. Now I can't seem to do it without figuring out xorg config files. |
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necktwi
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Joined: 24 Aug 2018
Posts: 168
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| Posted: Mon Mar 04, 2024 8:09 pm Post subject: I'm having the same issue |
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| my gpu is radeon rx7800xt connected to LG OLED42C2PSA |
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