Bug 455550 - Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on Hybrid AMD CPU + AMD GPU Laptop
Summary: Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on Hybr...
Status: RESOLVED DUPLICATE of bug 454086
Alias: None
Product: kwin
Classification: Plasma
Component: wayland-generic (show other bugs)
Version: 5.25.0
Platform: Arch Linux Linux
: NOR grave
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-18 12:48 UTC by McCak
Modified: 2022-06-20 08:13 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

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Description McCak 2022-06-18 12:48:35 UTC 
SUMMARY
Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on Hybrid AMD CPU + AMD GPU Laptop.. 


STEPS TO REPRODUCE (First Version)
1. Boot with Display port/HDMI connected
2. Login to SDDM
3. Wait.. 

OBSERVED RESULT (First Version)
Black screen on both laptop monitor and external one.. Waiting more than 10 mins didnt indicate any sign of life.. However going to the TTY seems fine

EXPECTED RESULT (First Version)
Show some content on the external screen only (that was my setting tried previously)

STEPS TO REPRODUCE (Second Version)
1. Boot without display port/HDMI connected
2. Login to SDDM
3. Wait..
4. Plug DP/HDMI 

OBSERVED RESULT (Second Version)
Blackscreen on the external display and cant be enabled via Display settings (the apps just straight up crashed)

EXPECTED RESULT (Second Version)
Display Settings should work.. or atleast it show something on the external display.. 

SOFTWARE/OS VERSIONS

Linux : Arch Linux
KDE Plasma Version: 5.25.0 
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.4

ADDITIONAL INFORMATION
Both HDMI and DP connected directly to the dGPU.. And yes its already activated.. However X11 doesnt have any similiar issue..

Hardware Specifications
Laptop : MSI Delta 15
CPU :Ryzen 7 5800H
GPU0 : RX 6700M 
GPU1: Vega 8

Logs 
https://pastebin.com/0RnCFX2g
2804 1000 998 SIGSEGV present  /usr/bin/kded5
Comment 1 Ricardo Vizcaya 2022-06-18 17:46:41 UTC 
SUMMARY
I can confirm this or similar behavior beginning with Plasma Wayland 5.25 with my Hybrid AMD CPU and AMD GPU Notebook.

--------------------------------
STEPS TO REPRODUCE (1)
1. Boot without USB-C to Display Port Connected
2. Connect the USB-C Cable after login with SDDM

EXPECTED RESULT (1)
1. External Monitor is recognized

OBSERVED RESULT (1)
1. No immediate monitor recognition, at least not visible in System Settings

--------------------------------
STEPS TO REPRODUCE (2)
1. Boot with USB-C to Display Port connected
2. Login with SDDM

OBSERVED RESULTS (2)
1. Plasma Desktop constantly crashed e.g. the Task Manager disappears and reappears
2. The External Monitor is OFF

EXPECTED RESULTS (2)
1. The Desktop is extended to the External Monitor

--------------------------------
STEPS TO REPRODUCE (3)
1. After (2) Open System Settings and enter Display Configuration

OBSERVED RESULTS (3)
1. You can observe that the External Monitor was detected but an error occurs
2. The External Monitor disappears and reappears (with error) OR System Settings crashes altogether.

EXPECTED RESULTS (3)
1. The External Monitor is detected and configurable

--------------------------------
SOFTWARE/OS VERSIONS
Linux : Arch Linux
KDE Plasma Version: plasma-desktop 5.25.0-1 
KDE Frameworks Version: plasma-framework 5.95.0-2
Qt Version: qt5-base 5.15.4+kde+r168-1

ADDITIONAL INFORMATION
The keyboard and mouse connected from the Notebook towards the External Monitor worked i.e. the Monitor was powered
A similar issue happens in my case with X11, though I would disclose I haven't really been in X11 for almost a year now

HARDWARE SPECIFICATIONS
Laptop : Asus ROG G15 Strix G513QY
CPU: AMD Ryzen™ 9 5900HX
GPU0 : AMD® Radeon™ RX 6800M
GPU1: AMD® Renoir

--------------------------------
This is my first post ever in this forum. Please let me know which logs should I post.
Comment 2 Méven Car 2022-06-19 06:20:43 UTC 
(In reply to McCak from comment #0)
> SUMMARY
> Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on
> Hybrid AMD CPU + AMD GPU Laptop.. 
> 
> 
> STEPS TO REPRODUCE (First Version)
> 1. Boot with Display port/HDMI connected
> 2. Login to SDDM
> 3. Wait.. 
> 
> OBSERVED RESULT (First Version)
> Black screen on both laptop monitor and external one.. Waiting more than 10
> mins didnt indicate any sign of life.. However going to the TTY seems fine
> 
> EXPECTED RESULT (First Version)
> Show some content on the external screen only (that was my setting tried
> previously)
> 
> STEPS TO REPRODUCE (Second Version)
> 1. Boot without display port/HDMI connected
> 2. Login to SDDM
> 3. Wait..
> 4. Plug DP/HDMI 
> 
> OBSERVED RESULT (Second Version)
> Blackscreen on the external display and cant be enabled via Display settings
> (the apps just straight up crashed)
> 
> EXPECTED RESULT (Second Version)
> Display Settings should work.. or atleast it show something on the external
> display.. 
> 
> SOFTWARE/OS VERSIONS
> 
> Linux : Arch Linux
> KDE Plasma Version: 5.25.0 
> KDE Frameworks Version: 5.95.0
> Qt Version: 5.15.4
> 
> ADDITIONAL INFORMATION
> Both HDMI and DP connected directly to the dGPU.. And yes its already
> activated.. However X11 doesnt have any similiar issue..
> 
> Hardware Specifications
> Laptop : MSI Delta 15
> CPU :Ryzen 7 5800H
> GPU0 : RX 6700M 
> GPU1: Vega 8
> 
> Logs 
> https://pastebin.com/0RnCFX2g
> 2804 1000 998 SIGSEGV present  /usr/bin/kded5

Thank you, and for the added stacktrace.

Extract from trace:

#0  0x00007f204acd036c n/a (libc.so.6 + 0x8e36c)
                                              #1  0x00007f204ac80838 raise (libc.so.6 + 0x3e838)
                                              #2  0x00007f204bd9f384 _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x7384)
                                              #3  0x00007f204ac808e0 n/a (libc.so.6 + 0x3e8e0)
                                              #4  0x00007f20478c5ee7 _ZN9QtWayland9wl_output11handle_doneEPvP9wl_output (libQt5WaylandCl>
                                              #5  0x00007f2047793536 n/a (libffi.so.8 + 0x7536)
                                              #6  0x00007f2047790037 n/a (libffi.so.8 + 0x4037)
                                              #7  0x00007f204c50e5e2 n/a (libwayland-client.so.0 + 0x75e2)
                                              #8  0x00007f204c50ed73 n/a (libwayland-client.so.0 + 0x7d73)
                                              #9  0x00007f204c50ef8c wl_display_dispatch_queue_pending (libwayland-client.so.0 + 0x7f8c)
                                              #10 0x00007f20478a0c56 _ZN15QtWaylandClient15QWaylandDisplay13flushRequestsEv (libQt5Wayla>
                                              #11 0x00007f204b336430 _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2b1430)
                                              #12 0x00007f204bfbea7c _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Wi>
                                              #13 0x00007f204b312b28 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Cor>

The stacktrace is limited, someone will need to reproduce it again.
One would need at least libkscreen and qt5-wayland debug symbols to have more hindsight.
Using debuginfod, it should be easy to install those on arch https://wiki.archlinux.org/title/Debugging/Getting_traces#Debuginfod
Comment 3 McCak 2022-06-20 01:20:16 UTC 
(In reply to Méven Car from comment #2)
> (In reply to McCak from comment #0)
> > SUMMARY
> > Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on
> > Hybrid AMD CPU + AMD GPU Laptop.. 
> > 
> > 
> > STEPS TO REPRODUCE (First Version)
> > 1. Boot with Display port/HDMI connected
> > 2. Login to SDDM
> > 3. Wait.. 
> > 
> > OBSERVED RESULT (First Version)
> > Black screen on both laptop monitor and external one.. Waiting more than 10
> > mins didnt indicate any sign of life.. However going to the TTY seems fine
> > 
> > EXPECTED RESULT (First Version)
> > Show some content on the external screen only (that was my setting tried
> > previously)
> > 
> > STEPS TO REPRODUCE (Second Version)
> > 1. Boot without display port/HDMI connected
> > 2. Login to SDDM
> > 3. Wait..
> > 4. Plug DP/HDMI 
> > 
> > OBSERVED RESULT (Second Version)
> > Blackscreen on the external display and cant be enabled via Display settings
> > (the apps just straight up crashed)
> > 
> > EXPECTED RESULT (Second Version)
> > Display Settings should work.. or atleast it show something on the external
> > display.. 
> > 
> > SOFTWARE/OS VERSIONS
> > 
> > Linux : Arch Linux
> > KDE Plasma Version: 5.25.0 
> > KDE Frameworks Version: 5.95.0
> > Qt Version: 5.15.4
> > 
> > ADDITIONAL INFORMATION
> > Both HDMI and DP connected directly to the dGPU.. And yes its already
> > activated.. However X11 doesnt have any similiar issue..
> > 
> > Hardware Specifications
> > Laptop : MSI Delta 15
> > CPU :Ryzen 7 5800H
> > GPU0 : RX 6700M 
> > GPU1: Vega 8
> > 
> > Logs 
> > https://pastebin.com/0RnCFX2g
> > 2804 1000 998 SIGSEGV present  /usr/bin/kded5
> 
> Thank you, and for the added stacktrace.
> 
> Extract from trace:
> 
> #0  0x00007f204acd036c n/a (libc.so.6 + 0x8e36c)
>                                               #1  0x00007f204ac80838 raise
> (libc.so.6 + 0x3e838)
>                                               #2  0x00007f204bd9f384
> _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x7384)
>                                               #3  0x00007f204ac808e0 n/a
> (libc.so.6 + 0x3e8e0)
>                                               #4  0x00007f20478c5ee7
> _ZN9QtWayland9wl_output11handle_doneEPvP9wl_output (libQt5WaylandCl>
>                                               #5  0x00007f2047793536 n/a
> (libffi.so.8 + 0x7536)
>                                               #6  0x00007f2047790037 n/a
> (libffi.so.8 + 0x4037)
>                                               #7  0x00007f204c50e5e2 n/a
> (libwayland-client.so.0 + 0x75e2)
>                                               #8  0x00007f204c50ed73 n/a
> (libwayland-client.so.0 + 0x7d73)
>                                               #9  0x00007f204c50ef8c
> wl_display_dispatch_queue_pending (libwayland-client.so.0 + 0x7f8c)
>                                               #10 0x00007f20478a0c56
> _ZN15QtWaylandClient15QWaylandDisplay13flushRequestsEv (libQt5Wayla>
>                                               #11 0x00007f204b336430
> _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2b1430)
>                                               #12 0x00007f204bfbea7c
> _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Wi>
>                                               #13 0x00007f204b312b28
> _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Cor>
> 
> The stacktrace is limited, someone will need to reproduce it again.
> One would need at least libkscreen and qt5-wayland debug symbols to have
> more hindsight.
> Using debuginfod, it should be easy to install those on arch
> https://wiki.archlinux.org/title/Debugging/Getting_traces#Debuginfod

I am trying my best to debug the one that you requested.. sadly i dont know where is the path for that.. (In reply to Méven Car from comment #2)
> (In reply to McCak from comment #0)
> > SUMMARY
> > Plasma Wayland (5.25.0) Multi Monitor or Display settings doesnt work on
> > Hybrid AMD CPU + AMD GPU Laptop.. 
> > 
> > 
> > STEPS TO REPRODUCE (First Version)
> > 1. Boot with Display port/HDMI connected
> > 2. Login to SDDM
> > 3. Wait.. 
> > 
> > OBSERVED RESULT (First Version)
> > Black screen on both laptop monitor and external one.. Waiting more than 10
> > mins didnt indicate any sign of life.. However going to the TTY seems fine
> > 
> > EXPECTED RESULT (First Version)
> > Show some content on the external screen only (that was my setting tried
> > previously)
> > 
> > STEPS TO REPRODUCE (Second Version)
> > 1. Boot without display port/HDMI connected
> > 2. Login to SDDM
> > 3. Wait..
> > 4. Plug DP/HDMI 
> > 
> > OBSERVED RESULT (Second Version)
> > Blackscreen on the external display and cant be enabled via Display settings
> > (the apps just straight up crashed)
> > 
> > EXPECTED RESULT (Second Version)
> > Display Settings should work.. or atleast it show something on the external
> > display.. 
> > 
> > SOFTWARE/OS VERSIONS
> > 
> > Linux : Arch Linux
> > KDE Plasma Version: 5.25.0 
> > KDE Frameworks Version: 5.95.0
> > Qt Version: 5.15.4
> > 
> > ADDITIONAL INFORMATION
> > Both HDMI and DP connected directly to the dGPU.. And yes its already
> > activated.. However X11 doesnt have any similiar issue..
> > 
> > Hardware Specifications
> > Laptop : MSI Delta 15
> > CPU :Ryzen 7 5800H
> > GPU0 : RX 6700M 
> > GPU1: Vega 8
> > 
> > Logs 
> > https://pastebin.com/0RnCFX2g
> > 2804 1000 998 SIGSEGV present  /usr/bin/kded5
> 
> Thank you, and for the added stacktrace.
> 
> Extract from trace:
> 
> #0  0x00007f204acd036c n/a (libc.so.6 + 0x8e36c)
>                                               #1  0x00007f204ac80838 raise
> (libc.so.6 + 0x3e838)
>                                               #2  0x00007f204bd9f384
> _ZN6KCrash19defaultCrashHandlerEi (libKF5Crash.so.5 + 0x7384)
>                                               #3  0x00007f204ac808e0 n/a
> (libc.so.6 + 0x3e8e0)
>                                               #4  0x00007f20478c5ee7
> _ZN9QtWayland9wl_output11handle_doneEPvP9wl_output (libQt5WaylandCl>
>                                               #5  0x00007f2047793536 n/a
> (libffi.so.8 + 0x7536)
>                                               #6  0x00007f2047790037 n/a
> (libffi.so.8 + 0x4037)
>                                               #7  0x00007f204c50e5e2 n/a
> (libwayland-client.so.0 + 0x75e2)
>                                               #8  0x00007f204c50ed73 n/a
> (libwayland-client.so.0 + 0x7d73)
>                                               #9  0x00007f204c50ef8c
> wl_display_dispatch_queue_pending (libwayland-client.so.0 + 0x7f8c)
>                                               #10 0x00007f20478a0c56
> _ZN15QtWaylandClient15QWaylandDisplay13flushRequestsEv (libQt5Wayla>
>                                               #11 0x00007f204b336430
> _ZN7QObject5eventEP6QEvent (libQt5Core.so.5 + 0x2b1430)
>                                               #12 0x00007f204bfbea7c
> _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Wi>
>                                               #13 0x00007f204b312b28
> _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Cor>
> 
> The stacktrace is limited, someone will need to reproduce it again.
> One would need at least libkscreen and qt5-wayland debug symbols to have
> more hindsight.
> Using debuginfod, it should be easy to install those on arch
> https://wiki.archlinux.org/title/Debugging/Getting_traces#Debuginfod

kded5
https://pastebin.com/erL0cH97

org_kde_powerdevil
https://pastebin.com/KHtvLHkE

plasmashell
https://pastebin.com/9dtktAez

I just found out that power devil and plasma shell is crashing too.. just sending the logs in case hoping that is helpful... i apologize if that is not the one you requested
Comment 4 Vlad Zahorodnii 2022-06-20 08:13:37 UTC 
Sounds like a duplicate of https://bugs.kde.org/show_bug.cgi?id=454086

*** This bug has been marked as a duplicate of bug 454086 ***