[Solved] Primary display stays off and shows no signal after sleep

hoppyhopps · 2025-06-11 13:08:01

Hello,

As explained in the title, my primary display will remain off, and tell me that there is no signal after I wake the machine up from sleep if I try and turn it on manually with the button.

If it is any help, then I am using the following:

Linux 6.15.1-arch1-2 kernel
RTX 5080 discrete GPU (Single GPU desktop)
I am using nvidia-open-dkms version 575.57.08-3 for my nvidia driver stack/modules
Both of my monitors are the Gigabyte m27q, though the primary display is an older model
I am using Wayland
I am on the KDE Plasma desktop environment
I am using SDDM as my display manager
I have double checked that the following are enabled, and they are

nvidia-suspend.service 
nvidia-resume.service
nvidia-hibernate.service

I'm a bit stuck on what else to double check at this point.

If there's anything else I can share that would help give more information, or anything I should format better in this post, please let me know!

Thanks!

Last edited by hoppyhopps (2025-06-11 21:31:54)

seth · 2025-06-11 16:21:59

Is it only the monitor? The system wakes up? Can you ssh into it?
Have you tried to switch the VT (ctrl+alt+f3)?

hoppyhopps · 2025-06-11 16:23:40

Hello! Yes, it is only the primary monitor. The system wakes up normally. I can ssh in to it from my laptop, but the secondary monitor wakes up like normal, so I've only done that once. I have not tried to switch the VT, but when this reoccurs I will try that, didn't think to do it earlier since one monitor was still alright.

seth · 2025-06-11 18:51:21

Hello! Yes, it is only the primary monitor

Ah, there's also a secondary monitot
Also use that to check the kscreen configuration w/ kscreen-doctor (ideally check the sane state before, so you've a baseline to compare)

hoppyhopps · 2025-06-11 19:06:27

Ah, sorry I had thought I said that I had multiple monitors in my initial post, that's my mistake.

I'm unfamiliar with kscreen-doctor, but I'll read some documentation and then see if I can find any differences between my configuration when everything is working properly vs after waking from sleep.

Thanks so much for your help so far! Good advice.

Last edited by hoppyhopps (2025-06-11 19:08:49)

seth · 2025-06-11 19:10:35

You actually did

Both of my monitors are the Gigabyte m27q, though the primary display is an older model

just not explicitly that they operate parallel

https://linuxcommandlibrary.com/man/kscreen-doctor - I suspect the primary output is simply disabled.

hoppyhopps · 2025-06-11 19:17:08

Thank you! This seems very very helpful.

It seems like output shows the following in a sane state:

Output: 1 DP-2
        enabled
        connected
        priority 2
        DisplayPort
        Modes:  1:2560x1440@60!  2:3840x2160@60  3:2560x1440@170*  4:2560x1440@165  5:2560x1440@144  6:2560x1440@120  7:1920x1080@144  8:1920x1080@120  9:1920x1080@100  10:1920x1080@60  11:1920x1080@50  12:1680x1050@60  13:1600x900@60  14:1280x1024@75  15:1280x1024@60  16:1440x900@60  17:1280x960@60  18:1280x800@60  19:1152x864@75  20:1280x720@100  21:1280x720@60  22:1280x720@60  23:1280x720@50  24:1024x768@75  25:1024x768@70  26:1024x768@60  27:1440x480@60  28:800x600@75  29:800x600@72  30:800x600@60  31:800x600@56  32:720x480@60  33:640x480@75  34:640x480@73  35:640x480@60 
        Geometry: 0,0 2560x1440
        Scale: 1
        Rotation: 1
        Overscan: 0
        Vrr: Automatic
        RgbRange: unknown
        HDR: disabled
        Wide Color Gamut: disabled
        ICC profile: none
        Color profile source: sRGB
        Color power preference: prefer efficiency and performance
        Brightness control: supported, set to 100% and dimming to 100%
Output: 2 DP-3
        enabled
        connected
        priority 1
        DisplayPort
        Modes:  36:2560x1440@60!  37:2560x1440@170*  38:2560x1440@165  39:2560x1440@144  40:2560x1440@120  41:1920x1080@144  42:1920x1080@120  43:1920x1080@60  44:1920x1080@60  45:1680x1050@60  46:1280x1024@75  47:1280x1024@60  48:1440x900@60  49:1280x720@120  50:1280x720@60  51:1024x768@75  52:1024x768@70  53:1024x768@60  54:800x600@75  55:800x600@72  56:800x600@60  57:800x600@56  58:720x576@50  59:720x480@60  60:640x480@75  61:640x480@73  62:640x480@60 
        Geometry: 2560,0 2560x1440
        Scale: 1
        Rotation: 1
        Overscan: 0
        Vrr: Automatic
        RgbRange: unknown
        HDR: disabled
        Wide Color Gamut: disabled
        ICC profile: none
        Color profile source: sRGB
        Color power preference: prefer efficiency and performance
        Brightness control: unsupported

It seems as though the monitor that works consistently is on DP-2, so I should be able to check if DP-3 is just disabled or disconnected somehow after I wake up from sleep.

Hopefully I should be able simply enable it with kscreen-doctor after.

Thanks so much seth! This has been very helpful.

Last edited by hoppyhopps (2025-06-11 19:22:47)

hoppyhopps · 2025-06-11 21:34:16

Marking as solved, as the past couple sleeps the displays have both turned on properly. Additionally I was able to resolve the issue using the following when it did occur

kscreen-doctor output.DP-3.enable

Last edited by hoppyhopps (2025-06-11 21:34:32)

Arch Linux

#1 2025-06-11 13:08:01

[Solved] Primary display stays off and shows no signal after sleep

#2 2025-06-11 16:21:59

Re: [Solved] Primary display stays off and shows no signal after sleep

#3 2025-06-11 16:23:40

Re: [Solved] Primary display stays off and shows no signal after sleep

#4 2025-06-11 18:51:21

Re: [Solved] Primary display stays off and shows no signal after sleep

#5 2025-06-11 19:06:27

Re: [Solved] Primary display stays off and shows no signal after sleep

#6 2025-06-11 19:10:35

Re: [Solved] Primary display stays off and shows no signal after sleep

#7 2025-06-11 19:17:08

Re: [Solved] Primary display stays off and shows no signal after sleep

#8 2025-06-11 21:34:16

Re: [Solved] Primary display stays off and shows no signal after sleep

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