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#1 2024-12-28 02:42:32

Fish.dll
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Registered: 2024-11-22
Posts: 9

[SOLVED] Dual monitors acting weird after recent system update.

Nearly a week ago I performed a system update on my Arch linux install which causes my monitors to perform weird. When booting, systemd appears on my laptop monitor but when sddm appears, it only appears on my secondary monitor instead of both monitors, and when logging in with wayland, only my laptop monitor works and my secondary monitor doesn't appear in display settings of KDE. When logging in with X11, only my second monitor works and my laptop monitor does not work and again, is not an option in my display settings. I'm pretty new to Arch linux and am not sure which logs I need to post so please tell me which logs to post and I will asap.

Last edited by Fish.dll (2024-12-29 22:59:09)

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#2 2024-12-28 23:10:17

seth
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Registered: 2012-09-03
Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

Start w/ your Xorg log, https://wiki.archlinux.org/title/Xorg#General - it'll show what GPUs are involved how and where the outputs are wired.
And maybe also where the config is wrong.

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#3 2024-12-28 23:29:52

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

Alright, here is the link to my Xorg Log: https://gist.github.com/FloppingFish/3e … a67cc25e12 I'll try to go through the log but im not very good at reading logs.

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#4 2024-12-28 23:52:28

seth
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Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

[   222.793] (==) Log file: "/home/fish/.local/share/xorg/Xorg.0.log", Time: Tue Dec  3 21:26:48 2024

The log is vastly dated.

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#5 2024-12-28 23:56:04

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

That's the only log I saw in my xorg folder. I also don't have a /var/log folder.

Last edited by Fish.dll (2024-12-28 23:57:16)

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#6 2024-12-29 09:31:20

seth
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From: Won't reply 2 private help req
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Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

Errr…

lsblk -f
findmnt -T /var/log

And we probably should also look at the journal at large - "I don't have /var/log" is not expected.
It exists in the filesystem and systemd packages.

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#7 2024-12-29 16:54:17

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

Alright, here is the output of those commands: https://gist.github.com/FloppingFish/93 … 19d429cb98 I also did find an Xorg log file in /var/log, here is the output of that one: https://gist.github.com/FloppingFish/2c … 907eee4f09 The only way I could see that folder was to open it in kate.

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#8 2024-12-29 17:21:34

seth
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Registered: 2012-09-03
Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

The only way I could see that folder was to open it in kate.

ls -l /var/log
[     5.421] (==) Using config directory: "/etc/X11/xorg.conf.d"
[     5.421] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[     5.422] (==) ServerLayout "layout"
[     5.422] (**) |-->Screen "nvidia" (0)
[     5.422] (**) |   |-->Monitor "<default monitor>"
[     5.422] (**) |   |-->Device "nvidia"
[     5.422] (**) |   |-->GPUDevice "integrated"
[     5.422] (==) No monitor specified for screen "nvidia".

optimus-manager?

[     7.842] (--) NVIDIA(GPU-0): Samsung C27F390 (DFP-0): connected
[     7.842] (--) NVIDIA(GPU-0): Samsung C27F390 (DFP-0): Internal TMDS
[     7.842] (--) NVIDIA(GPU-0): Samsung C27F390 (DFP-0): 600.0 MHz maximum pixel clock
[     7.842] (--) NVIDIA(GPU-0): 
[     7.869] (==) NVIDIA(0): 
[     7.869] (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
[     7.869] (==) NVIDIA(0):     will be used as the requested mode.
[     7.869] (==) NVIDIA(0): 
[     7.873] (II) NVIDIA(0): Validated MetaModes:
[     7.873] (II) NVIDIA(0):     "DFP-0:nvidia-auto-select"
[     7.873] (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1080
…
[     8.016] (II) modeset(G0): EDID for output eDP-1-1
[     8.016] (II) modeset(G0): Manufacturer: AUO  Model: af90  Serial#: 0
[     8.016] (II) modeset(G0): Year: 2020  Week: 8

Your outputs should™ both be available, check "xrandr -q"

You're running the outputs in a reverse prime setup, why? Deliberately?
This will likely alter the output names and kscreen will not pick up on that, https://wiki.archlinux.org/title/KDE#Un … lution_set but you should first sort out why you're using OM and whether you actually want to do that at all.

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#9 2024-12-29 17:28:44

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

I thought I uninstalled optimus-manager. I remember installing it then I never opened it and just uninstalled it because I figured I would never need it.

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#10 2024-12-29 17:30:30

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

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#11 2024-12-29 17:53:53

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

Okay, so after I moved an optimus manager file located in /etc/X11/xorg.conf.d to a different folder, the login screen now appears on my primary display instead of my secondary one.

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#12 2024-12-29 19:54:33

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

Fish.dll wrote:

Is that all?
Has it changed after getting rid of the OM config?
What does your xorg log/xrandr output look like now?

Do you still have problems w/ the setup?

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#13 2024-12-29 20:26:39

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

Yeah that's all of the output from that command, i'm still unfortunately having the issue. Here is the new xorg log: https://gist.github.com/FloppingFish/7d … 445711f204 and here is the output of ls -l /var/log: https://gist.github.com/FloppingFish/26 … 851aff4e5a

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#14 2024-12-29 20:44:56

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

The nvidia chip is completely ignored by the server autodetection, please post your complete system journal for the boot:

sudo journalctl -b | curl -F 'file=@-' 0x0.st

and

pacman -Qs 'kernel|nvidia'

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#15 2024-12-29 22:07:26

Fish.dll
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Registered: 2024-11-22
Posts: 9

Re: [SOLVED] Dual monitors acting weird after recent system update.

Alright, I somehow fixed it! When I did pacman -Qs 'kernel|nvidia' I saw that optimus-manager-git was installed still so I just did "Sudo pacman -Rs optimus-manager-git and rebooted, which fixed it. Thank you so much for your help!

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#16 2024-12-29 22:48:24

seth
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From: Won't reply 2 private help req
Registered: 2012-09-03
Posts: 75,652

Re: [SOLVED] Dual monitors acting weird after recent system update.

\o/
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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