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Enrico1989

Member

Registered: 2018-07-05

Posts: 400

[SOLVED] "No devices detected" and "no screens found" upon reboot

I suppose something might have gone wrong with the update.

It might be related to this older question of mine, but that was on my laptop, while now I'm on my workstation.

I've looked up and found old questions, such as this, which might not be all relevant after such long time.

As regards the wiki, the only section that mentions "No devices detected" or "no screens found" is X fails with "no screens found" when using Multiple GPUs, but as far as I know, I only have 1 GPU, which is a Nvidia GeForce GTX 1070 Ti.

Here is ~/.local/share/xorg/Xorg.0.log.

It might be important that I have this /etc/X11/xorg.conf.d/20-nvidia.conf in place, but I don't remember whether I put it there and, if so, why. Here's content:

Section "Screen"
    Identifier     "Screen0"
    Device         "Default nvidia Device"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-2"
    Option         "metamodes" "HDMI-0: nvidia-auto-select +0+624 {viewportin=2720x1536}, DP-0: nvidia-auto-select +2720+0"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Device"
    Identifier "Default nvidia Device"
    Driver     "nvidia"
    Option     "CoolBits"   "24"
    Option     "DPI"        "160x160" # the crucial setting
    Option     "UseEdidDpi" "False"   # better be safe than sorry
EndSection

Last edited by Enrico1989 (2026-08-17 13:10:09)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,343

Re: [SOLVED] "No devices detected" and "no screens found" upon reboot

Try removing that config. If you want a more controlled snippet to enable coolbits and custom DPI without. hardcoding screen and display information do a

Section "OutputClass"
   Identifier "nvidia"
   MatchDriver "nvidia-drm"
   Driver "nvidia"
   Option "Coolbits" "24"
   Option "DPI" "160x160"
   Option "UseEdidDpi" "False"
EndSection

Other than that the likely more relevant bit, this is a Pascal card, thus requires https://aur.archlinux.org/packages/nvidia-580xx-utils -- if you noted and switched to that -- when was the last time you actively updated that? Note that dkms modules like the one that will be produced from this package require the kernel headers of whatever kernel you are running so the module can be built against said kernel.

Can't look at the logs on this system, but this should give you a general direction to look at.

Last edited by V1del (2026-08-17 10:56:55)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,550

Re: [SOLVED] "No devices detected" and "no screens found" upon reboot

Other than that the likely more relevant bit, this is a Pascal card … Can't look at the logs on this system

Very relevant indeed…

[  1300.163] (EE) NVIDIA: Failed to initialize the NVIDIA kernel module. Please see the

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Enrico1989

Member

Registered: 2018-07-05

Posts: 400

Re: [SOLVED] "No devices detected" and "no screens found" upon reboot

when was the last time you actively updated that?

Too long ago. I forgot to update AUR packages.

Updating it fixed the issue.

Nonetheless I've done this too.

If you want a more controlled snippet to enable coolbits and custom DPI without. hardcoding screen and display information do a

Section "OutputClass"
   Identifier "nvidia"
   MatchDriver "nvidia-drm"
   Driver "nvidia"
   Option "Coolbits" "24"
   Option "DPI" "160x160"
   Option "UseEdidDpi" "False"
EndSection