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#1 2020-11-28 05:56:53
- rhpittman314
- Member
- Registered: 2020-11-27
- Posts: 29
[Solved] Primary monitor resolution is too low at boot
Since some recent changes made, my primary monitor (connected through DisplayPort) resolution is reduced to 1600x900, rather than the usual 3840x2160. I am also unable to change this through the system settings on the desktop. For some reason, the highest it goes is
But my secondary monitor (connected through HDMI) is just fine, with an unchanged resolution of 3840x2160.
The output of xrandr -q gives
Screen 0: minimum 320 x 200, current 5440 x 2160, maximum 16384 x 16384
DisplayPort-0 connected primary 1600x900+3840+0 (normal left inverted right x axis y axis) 607mm x 345mm
1600x900 60.00*
1280x1024 60.02
1440x900 59.89
1280x800 59.81
1152x864 75.00
1280x720 60.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 608mm x 345mm
3840x2160 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98
2560x1440 59.95
1920x1200 60.00
1920x1080 60.00 50.00 59.94 30.00 24.00 29.97 23.98
1600x1200 60.00
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 59.94The system journal for this on startup can be found at
http://ix.io/2FJK.
This seemed to happen when I switched from KDE Plasma-Wayland to regular Plasma. What parameters should be adjusted to prevent this from happening, and to ensure I start my PC at the correct resolution on both monitors?
Last edited by rhpittman314 (2020-11-29 22:43:52)
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#2 2020-11-28 06:51:31
- rhpittman314
- Member
- Registered: 2020-11-27
- Posts: 29
Re: [Solved] Primary monitor resolution is too low at boot
I was able to resolve this through a convoluted series of step in the system settings. The journal of this can be found below. The main temporary fix is to disable output to the monitor, then re-enable it, and the proper resolutions are listed. I'm still not sure why this is incorrect at boot, but I'd like to avoid having to make this change at each startup.
http://ix.io/2FLa
But there was a weird issue that was presented when doing it previously, where the application windows could not be moved to the second monitor, and were instead window snapped to the side of my primary monitor. I have no clue why this would happen, but I suspect it's a minor issue beyond the typical newbie corner stuff. Since restarting, windows can move over fine now. Just in case, I recorded the journal of the past 30 minutes, which should include it, if it would be in there. The journal can be found below:
http://ix.io/2FLb
If relevant, xrandr -q is now:
Screen 0: minimum 320 x 200, current 7680 x 2160, maximum 16384 x 16384
DisplayPort-0 connected primary 3840x2160+3840+0 (normal left inverted right x axis y axis) 607mm x 345mm
3840x2160 60.00 + 30.00* 29.97
2560x1440 59.95
1920x1200 60.00
1920x1080 60.00 59.94
1600x1200 60.00
1680x1050 59.95
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.89
1280x800 59.81
1152x864 75.00
1280x720 60.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 608mm x 345mm
3840x2160 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98
2560x1440 59.95
1920x1200 60.00
1920x1080 60.00 50.00 59.94 30.00 24.00 29.97 23.98
1600x1200 60.00
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 Offline
#3 2020-11-28 07:18:10
- seth
- Member
- From: Won't reply 2 private help req
- Registered: 2012-09-03
- Posts: 77,686
Re: [Solved] Primary monitor resolution is too low at boot
https://wiki.archlinux.org/index.php/Ke … _KMS_start
the application windows could not be moved to the second monitor
Sounds like you created a zaphod setup, https://wiki.archlinux.org/index.php/Multihead
Post the xorg log.
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#4 2020-11-28 08:23:13
- rhpittman314
- Member
- Registered: 2020-11-27
- Posts: 29
Re: [Solved] Primary monitor resolution is too low at boot
https://wiki.archlinux.org/index.php/Ke … _KMS_start
the application windows could not be moved to the second monitor
Sounds like you created a zaphod setup, https://wiki.archlinux.org/index.php/Multihead
Post the xorg log.
The complete xorg log: http://ix.io/2FLt
Also, if the xorg log is only at boot time and you're requesting the xorg log marked as old (assuming it's for the previous boot), then that can be found here: http://ix.io/2FLu
Trying a boot with amdgpu listed under MODULES of mkinitcpio.conf now.
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#5 2020-11-28 08:51:26
- rhpittman314
- Member
- Registered: 2020-11-27
- Posts: 29
Re: [Solved] Primary monitor resolution is too low at boot
Trying a boot with amdgpu listed under MODULES of mkinitcpio.conf now.
This seems to have fixed all resolution issues. For some reason, the DisplayPort monitor still started up at 30Hz. It's much easier to change than it was though. Under the correct settings, I've created an xorg.conf file through the general steps laid out in https://wiki.archlinux.org/index.php/Xo … conf_files
Hopefully this next startup resolves the issues. If it does, I'll mark the post as solved.
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