Bug 460560 - Primary monitor to becomes disabled when secondary monitor is plugged in
Summary: Primary monitor to becomes disabled when secondary monitor is plugged in
Status: RESOLVED DUPLICATE of bug 460341
Alias: None
Product: KScreen
Classification: Plasma
Component: common (show other bugs)
Version: 5.26.0
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-10-16 21:54 UTC by chriswhitlock417
Modified: 2022-10-17 20:19 UTC (History)
2 users (show)

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Description chriswhitlock417 2022-10-16 21:54:58 UTC 
SUMMARY
***
I have a dual monitor setup using an xorg.conf that has never been a problem, but after an update, my primary monitor does not work, and KDE ignores my /etc/X11/xorg.conf and everything in /etc/X11/xorg.conf.d/. The primary monitor is listed as "Disabled" under System Settings > Hardware > Display and Monitor > Display Configuration and, after login, only shows a black screen for about half a second before going to sleep, while the secondary monitor becomes the only working monitor. Enabling the monitor and hitting "Apply" just makes it show a black screen briefly again before going back to sleep. The same happens when using the nvidia-settings GUI to try to do the same thing, or running xrandr. If I only have one monitor plugged in, then either works fine
***


STEPS TO REPRODUCE
1. Enable KScreen 2 under System Settings > Workspace > Startup and Shutdown > Background Services
2. 
3. 

OBSERVED RESULT

Only my secondary monitor works, while the primary one becomes "Disabled", only shows a black screen, and goes to sleep a second or two after login.

EXPECTED RESULT

Dual monitor setup functioning normally with both screens working and aligned properly.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Distro: Arch 
Kernel: 5.15.74-1-lts
GPU: Nvidia RTX 2060 Super
GPU Drivers: nvidia-lts 1:520.56.06-4
Monitor 1: Asus VG27AQ 2560x1440 165hz
Monitor 2: Dell ST2410 1920x1080 60hz
Display Manager: sddm 0.19.0-8
Comment 1 Robert S. 2022-10-17 13:58:22 UTC 
I also have this issue In my case, I am on KDE Neon User Edition 5.26 with kernel 5.15.0-50-generic. This started happening since upgrading from 5.25 to 5.26, and every time I start my computer and log in I have to enable one of my 3 monitors. Manually editing the Xorg config does not fix this.

If I need to provide any logs or anything please let me know since I know that this is a fairly vague issue.

ADDITIONAL INFORMATION

Distro: KDE Neon User Edition 
Kernel: 5.15.0-50-generic
GPU: Nvidia RTX 2060
GPU Drivers: nvidia-driver-515 515.76
Monitor 1: BenQ LCD Monitor BL2423PT 1920x1080 60hz
Monitor 2: MSI G24C4 1920x1080 144hz
Monitor 3: MSI G24C4 1920x1080 144hz
Display Manager: sddm 0.19.0-4
Comment 2 Nate Graham 2022-10-17 20:19:47 UTC 

*** This bug has been marked as a duplicate of bug 460341 ***