https://bugs.kde.org/show_bug.cgi?id=526658
Bug ID: 526658
Summary: Moving from 2560 x 1440 (16:9) to 2560 x 1600 (16:10)
Cause KWin to crash
Classification: I don't know
Product: kde
Version First unspecified
Reported In:
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Application: (6.7.5)
(Compiled from sources)
ApplicationNotResponding [ANR]: false
Qt Version: 6.11.2
Frameworks Version: 6.30.0
Operating System: Linux 7.2.9 x86_64
Windowing System: Wayland
Distribution: NixOS 26.11 (Zokor)
DrKonqi: 6.7.5 [CoredumpBackend]
-- Information about the crash:
Attempting to get new 4k TV functioning at 3840 x 2160 (16:9)
TV Model: Samsung S90H
GPU: AMD 9070
At first everything seemed to function as expected. While making a
configuration change there was a regression and I'm now unable to use higher
resolutions.
2560 x 1440 (16:9) @ 60hz functions
2560 x 1600 (16:10) @ 60hz does not function. Anything over this resolution
also fails in the same way.
I've ruled out it being a configuration issue. I've made a new test account and
can reproduce the crash looping.
*Description of the error*
Once a non-functional resolution is selected KWin continually crashes. This
makes it hard to change the configuration back. It gives just enough time to
alter the configuration to a functional one if you're quick. Unplugging the TV
also gets the crashing to stop.
While looping I see this output continually being produced in `journalctl`:
```
kded6[6829]: xsettingsd: Reloading configuration
kded6[6829]: xsettingsd: Loaded 16 settings from
/home/ryanl/.config/xsettingsd/xsettingsd.conf
kded6[1739]: No object for name "auto_null" returning nullptr
kded6[1739]: No object for name "@DEFAULT_SOURCE@" returning nullptr
kded6[1739]: No object for name "auto_null" returning nullptr
kded6[1739]: No object for name "@DEFAULT_SOURCE@" returning nullptr
kded6[1739]: No object for name
"alsa_output.pci-0000_03_00.1.hdmi-stereo-extra2.monitor" returning nullptr
kded6[1739]: No object for name
"alsa_output.pci-0000_03_00.1.hdmi-stereo-extra2.monitor" returning nullptr
plasmashell[6693]: No object for name "auto_null" returning nullptr
plasmashell[6693]: No object for name "@DEFAULT_SOURCE@" returning nullptr
plasmashell[6693]: No object for name "auto_null" returning nullptr
plasmashell[6693]: No object for name "@DEFAULT_SOURCE@" returning nullptr
plasmashell[6693]: No object for name
"alsa_output.pci-0000_03_00.1.hdmi-stereo-extra2.monitor" returning nullptr
plasmashell[6693]: No object for name
"alsa_output.pci-0000_03_00.1.hdmi-stereo-extra2.monitor" returning nullptr
plasmashell[6693]: Final member StackingOrder is overridden in class
QQmlDMAbstractItemModelData. The override won't be used.
plasmashell[6693]: Final member StackingOrder is overridden in class
QQmlDMAbstractItemModelData. The override won't be used.
org_kde_powerdevil[1795]: [ 1851][290.007779] Udev event detected
org_kde_powerdevil[1795]: [ 1851][290.007844] Udev_Event_Detail
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_subsystem: drm
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_action: change
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_connector: 464
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_devname:
/dev/dri/card1
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_devmode: (null)
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_hotplug: 1
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_major: 226
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_minor: 1
org_kde_powerdevil[1795]: [ 1851][290.007844] sysname: card1
org_kde_powerdevil[1795]: [ 1851][290.007844] syspath:
/sys/devices/pci0000:00/0000:00:01.1/0000:01:00.0/0000:02:00.0/0000:03:00.0/drm/card1
org_kde_powerdevil[1795]: [ 1851][290.007844] attr_name: (null)
org_kde_powerdevil[1795]: [ 1851][290.007844] Could not find I2C_Bus_Info for
connector id: 464
org_kde_powerdevil[1795]: [ 1851][290.007844] prop_connector = 464 ->
card1-HDMI-A-1
org_kde_powerdevil[1795]: [ 1851][290.007877] (dw_watch_display_connections)
Time since last return from sleep = 289985080225 ns = 289985 ms
kwin_wayland_wrapper[6727]: maliit.connection.wayland: void
WaylandInputMethodConnectionPrivate::handleRegistryGlobalRemove(uint32_t) 76
plasmashell[6693]: requesting unexisting screen available rect -1
```
*KWin Launches Crash Handler*
After sometime KWin finally launches the crash handler. This is how I'm now
filing this bug report.
Looking through the report I noticed it talking about `(gdb)Auto-loading safe
path`. I followed its guidance and created the gdbinit config file. I then
added `add-auto-load-safe-path /`. This does not resolve the issue. All this
does is prevent KWin from crashing. Instead the system gets slow and
unresponsive. I can ocassionally move the mouse but the system is unusable.
*Additional Troubleshooting*
I'm able to plug my laptop into the TV and it works just fine at all availble
resolutions. This leads me to believe it is somehow related to my hardware.
Another note is I've built both systems off the same nixpkgs hash. So I believe
both machines are using identical version of plasma6:
```
"nixpkgs": {
"locked": {
"lastModified": 1791048980,
"narHash": "sha256-KgItSKML8Xvte0B7/uGnBDsYzSnnKHcOaiUbgWBXLXw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "a7868a727837f3c09cee2ce0ca671c76b1589fed",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
```
The crash can be reproduced every time.
-- Backtrace (Reduced):
#4 0x00006fff3860df2f in KWin::DrmGpu::pageFlipHandler(int, unsigned int,
unsigned int, unsigned int, unsigned int, void*) () from
/nix/store/aizckrzpbxghv0iwmkqsknbxdhy4yx8d-kwin-6.7.5/lib/libkwin.so.6
#5 0x00006fff38ade8c5 in drmHandleEvent () from
/nix/store/0yvm79dfl53xg4vi2mg01cljfpnxkcnc-libdrm-2.4.134/lib/libdrm.so.2
#6 0x00006fff3860cf08 in KWin::DrmGpu::dispatchEvents() () from
/nix/store/aizckrzpbxghv0iwmkqsknbxdhy4yx8d-kwin-6.7.5/lib/libkwin.so.6
#7 0x00006fff348420b7 in void doActivate<false>(QObject*, int, void**) () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#8 0x00006fff34851353 in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal) () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#9 0x00006fff34851b5f in QSocketNotifier::event(QEvent*) () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#10 0x00006fff35daafee in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Widgets.so.6
#11 0x00006fff347c8788 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#12 0x00006fff349da335 in
QEventDispatcherUNIXPrivate::activateSocketNotifiers() () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#13 0x00006fff349dad15 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
[...]
#15 0x00006fff347d770b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#16 0x00006fff347d25f2 in QCoreApplication::exec() () from
/nix/store/6qkfgq14vwp19v69ciwdrac5yjcrj5qn-qtbase-6.11.2/lib/libQt6Core.so.6
#17 0x00005f463976d235 in main ()
Reported using DrKonqi
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