https://bugs.kde.org/show_bug.cgi?id=399564
Bug ID: 399564
Summary: kwin_wayland segfault on monitor wakeup
Product: kwin
Version: 5.14.0
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: jordanlepp...@gmail.com
Target Milestone: ---
SUMMARY
When using the Wayland session on KDE Neon 5.14.0, when the powersaving sends
the monitors to sleep due to inactivity, and I then wake them up again with
mouse/keyboard, kwin crashes.
STEPS TO REPRODUCE
1. Log into Plasma Wayland session
2. Wait for powersaving to send the monitors to sleep
3. Wake up with mouse movement/key press
OBSERVED RESULT
Plasma and KWin are dead. SDDM is still alive. This is in the log (journalctl
-b) at the point it crashes:
Oct 9 15:17:11 rupert kernel: [ 1046.307177] kwin_wayland[4108]: segfault at
561cfae8a5e0 ip 00007f68a3ffa1c3 sp 00007ffe84cfa4a8 error 4 in
libQt5Gui.so.5.11.1[7f68a3eff000+58d000]
EXPECTED RESULT
Desktop comes back as normal
SOFTWARE VERSIONS
(available in About System)
KDE Plasma Version: 5.14.0
KDE Frameworks Version: 5.50.0
Qt Version: 5.11.1
ADDITIONAL INFORMATION
I'm using two 4k monitors connected via DisplayPort 1.2, to an AMD Vega 64
card, using the standard AMDGPU drivers in the 4.15 kernel.
Full system info:
System: Kernel: 4.15.0-36-generic x86_64 bits: 64 gcc: 7.3.0
Desktop: KDE Plasma 5.14.0 (Qt 5.11.1) Distro: KDE neon User Edition
5.14
Machine: Device: desktop Mobo: MSI model: X99S SLI PLUS (MS-7885) v: 1.0
serial: N/A
UEFI: American Megatrends v: 1.E0 date: 06/15/2018
CPU: 6 core Intel Core i7-5820K (-MT-MCP-) arch: Haswell rev.2 cache:
15360 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 39599
clock speeds: max: 3600 MHz 1: 1788 MHz 2: 1837 MHz 3: 1548 MHz 4:
1833 MHz 5: 1779 MHz 6: 1630 MHz
7: 1636 MHz 8: 2441 MHz 9: 1446 MHz 10: 1695 MHz 11: 1757 MHz 12:
1548 MHz
Graphics: Card: Advanced Micro Devices [AMD/ATI] Vega [Radeon RX Vega] bus-ID:
05:00.0
Display Server: x11 (X.Org 1.19.6 ) drivers: ati,amdgpu (unloaded:
modesetting,fbdev,vesa,radeon)
Resolution: 3840x2160@60.00hz, 3840x2160@60.00hz
OpenGL: renderer: Radeon RX Vega (VEGA10 / DRM 3.23.0 /
4.15.0-36-generic, LLVM 6.0.0)
version: 4.5 Mesa 18.0.5 Direct Render: Yes
Audio: Card-1 Advanced Micro Devices [AMD/ATI] Device aaf8 driver:
snd_hda_intel bus-ID: 05:00.1
Card-2 Intel C610/X99 series HD Audio Controller driver:
snd_hda_intel bus-ID: 00:1b.0
Sound: Advanced Linux Sound Architecture v: k4.15.0-36-generic
Network: Card: Intel Ethernet Connection (2) I218-V driver: e1000e v: 3.2.6-k
port: f020 bus-ID: 00:19.0
IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives: HDD Total Size: 500.1GB (25.6% used)
ID-1: /dev/sda model: Samsung_SSD_840 size: 500.1GB
Partition: ID-1: / size: 457G used: 120G (28%) fs: ext4 dev: /dev/sda2
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 40.0C mobo: N/A gpu: 46.0
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 293 Uptime: 37 min Memory: 2982.1/11905.9MB Init: systemd
runlevel: 5 Gcc sys: 7.3.0
Client: Shell (bash 4.4.191) inxi: 2.3.56
Log:
At the point the powersaving sent monitors to sleep:
Oct 9 15:15:41 rupert kernel: [ 598.515338] [drm] HBR2x4 pass VS=2, PE=0
At the point of wakeup:
Oct 9 15:17:01 rupert CRON[4408]: (root) CMD ( cd / && run-parts --report
/etc/cron.hourly)
Oct 9 15:17:10 rupert kernel: [ 956.797760] [drm] {3840x2160,
4000x2222@533250Khz}
Oct 9 15:17:10 rupert kernel: [ 1045.725396] [drm] {3840x2160,
4000x2222@533250Khz}
Oct 9 15:17:10 rupert kernel: [ 1045.732945] [drm] HBR2x4 pass VS=1, PE=1
Oct 9 15:17:10 rupert kernel: [ 1045.745082] [drm] {3840x2160,
4000x2222@533250Khz}
Oct 9 15:17:10 rupert kernel: [ 1045.759031] [drm] {3840x2160,
4000x2222@533250Khz}
Oct 9 15:17:11 rupert kernel: [ 1045.766113] [drm] HBR2x4 pass VS=1, PE=1
Oct 9 15:17:11 rupert kernel: [ 1046.307177] kwin_wayland[4108]: segfault at
561cfae8a5e0 ip 00007f68a3ffa1c3 sp 00007ffe84cfa4a8 error 4 in
libQt5Gui.so.5.11.1[7f68a3eff000+58d000]
Oct 9 15:17:11 rupert sddm-helper[4073]: [PAM] Closing session
Oct 9 15:17:11 rupert sddm-helper[4073]: [PAM] Ended.
Oct 9 15:17:11 rupert sddm[3626]: Auth: sddm-helper exited successfully
Oct 9 15:17:11 rupert sddm[3626]: Greeter stopping...
Oct 9 15:17:11 rupert sddm[3626]: Socket server stopping...
Oct 9 15:17:11 rupert sddm[3626]: Socket server stopped.
Oct 9 15:17:11 rupert sddm[3626]: Display server stopping...
Oct 9 15:17:11 rupert sddm-greeter[4046]: The X11 connection broke: I/O error
(code 1)
Oct 9 15:17:11 rupert systemd[1]: session-22.scope: Killing process 4215
(baloo_file) with signal SIGTERM.
Oct 9 15:17:11 rupert systemd[1]: session-22.scope: Killing process 4240 (sh)
with signal SIGTERM.
Oct 9 15:17:11 rupert systemd[1]: session-22.scope: Killing process 4244
(sleep) with signal SIGTERM.
Oct 9 15:17:11 rupert systemd[1]: Stopping Session 22 of user jordan.
Oct 9 15:17:11 rupert systemd[1]: Stopped Session 22 of user jordan.
Oct 9 15:17:11 rupert sddm-helper[4032]: [PAM] Closing session
Oct 9 15:17:11 rupert sddm[3626]: Display server stopped.
There's more logs but they don't seem relevant after this point, I can attach
them if needed.
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