Bug 470466 - Monitor repeatedly disconnects and reconnects when plugged in
Summary: Monitor repeatedly disconnects and reconnects when plugged in
Status: RESOLVED DOWNSTREAM
Alias: None
Product: kwin
Classification: Plasma
Component: multi-screen (show other bugs)
Version: 5.27.4
Platform: Ubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-05-30 20:37 UTC by gcrume
Modified: 2023-09-21 23:49 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


Attachments
screen shot of Display configuration window (54.81 KB, image/png)
2023-05-30 20:37 UTC, gcrume
Details
screen shot of Display configuration window (55.60 KB, image/png)
2023-05-30 20:39 UTC, gcrume
Details
attachment-1232516-0.html (2.02 KB, text/html)
2023-09-20 21:50 UTC, gcrume
Details
attachment-1337580-0.html (1.34 KB, text/html)
2023-09-21 23:49 UTC, gcrume
Details

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Description gcrume 2023-05-30 20:37:03 UTC
Created attachment 159357 [details]
screen shot of Display configuration window

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***


STEPS TO REPRODUCE
1. attach a second monitor to the GPU 
2. 
3. 

OBSERVED RESULT
in Display Configuration a notice continually cycles between:
A new output has been added. Settings have been reloaded.
An output has been removed. Settings have been reloaded.

The cycle time is approximately 10 seconds

EXPECTED RESULT
Display configuration would detect the new display and allow configuration

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8

ADDITIONAL INFORMATION
Kernel Version: 6.2.0-20-generic (64-bit)
Graphics Platform: Wayland

Processor: 16 × AMD Ryzen 7 2700 Eight-Core Processor
Memory: 15.5 GiB of RAM
Graphics Processor: AMD Radeon RX 580 Series
Comment 1 gcrume 2023-05-30 20:39:24 UTC
Created attachment 159358 [details]
screen shot of Display configuration window
Comment 2 Zamundaaa 2023-09-19 16:18:59 UTC
Sorry for taking so long to get to your bug report. Is this still happening?

If so, can you try putting KWIN_DRM_PREFER_COLOR_DEPTH=24 into /etc/environment and see if it's still happening after a reboot?
Comment 3 gcrume 2023-09-20 21:50:50 UTC
Created attachment 161761 [details]
attachment-1232516-0.html

Hi Nate,

Thank you for the reply.
I believe it is a monitor issue. The problem only occurs when one specific
monitor is not used for the desktop but is still connected to the computer.
I did try your suggestion and it did not resolve the issue (since it is
most likely a hardware problem).

Your efforts with KDE Neon are appreciated - it's a great distro!

Best regards,

Gregg

On Tue, Sep 19, 2023 at 12:19 PM Zamundaaa <bugzilla_noreply@kde.org> wrote:

> https://bugs.kde.org/show_bug.cgi?id=470466
>
> Zamundaaa <xaver.hugl@gmail.com> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>                  CC|                            |xaver.hugl@gmail.com
>          Resolution|---                         |WAITINGFORINFO
>              Status|REPORTED                    |NEEDSINFO
>
> --- Comment #2 from Zamundaaa <xaver.hugl@gmail.com> ---
> Sorry for taking so long to get to your bug report. Is this still
> happening?
>
> If so, can you try putting KWIN_DRM_PREFER_COLOR_DEPTH=24 into
> /etc/environment
> and see if it's still happening after a reboot?
>
> --
> You are receiving this mail because:
> You reported the bug.
Comment 4 Nate Graham 2023-09-21 15:23:23 UTC Comment hidden (spam)
Comment 5 Nate Graham 2023-09-21 15:26:26 UTC Comment hidden (spam)
Comment 6 Nate Graham 2023-09-21 15:28:04 UTC
Anyway, thanks for following up!

But to note it was Xaver who helped you--not me! And I'm also not really involved in KDE Neon. Don't wanna take credit for things I didn't do! :)
Comment 7 gcrume 2023-09-21 23:49:35 UTC
Created attachment 161793 [details]
attachment-1337580-0.html

Thanks for mediating! :-)

On Thu, Sep 21, 2023 at 11:28 AM Nate Graham <bugzilla_noreply@kde.org>
wrote:

> https://bugs.kde.org/show_bug.cgi?id=470466
>
> Nate Graham <nate@kde.org> changed:
>
>            What    |Removed                     |Added
>
> ----------------------------------------------------------------------------
>          Resolution|WAITINGFORINFO              |DOWNSTREAM
>              Status|NEEDSINFO                   |RESOLVED
>
> --- Comment #6 from Nate Graham <nate@kde.org> ---
> Anyway, thanks for following up!
>
> But to note it was Xaver who helped you--not me! And I'm also not really
> involved in KDE Neon. Don't wanna take credit for things I didn't do! :)
>
> --
> You are receiving this mail because:
> You reported the bug.