Bug 417743

SUMMARY
When I close my laptop lid and open it later on (but this only appears if I am not connected to my Lenovo docking station any more). Plasma and everything else crashes, I need to relogin. Sometimes I even need to reboot because the session has many errors after a relogin.


STEPS TO REPRODUCE
1. Work normally (docked)
2. Go into standby (suspend to ram)
3. Undock the notebook (in this case a Lenovo W540)
4. Open the laptop lid again

OBSERVED RESULT
Crash

EXPECTED RESULT
No Crash

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 20.04 64bit; Linux 5.5.2
(available in About System)
KDE Plasma Version: 5.18.0
KDE Frameworks Version: 5.67.0
Qt Version: 5.12.5

ADDITIONAL INFORMATION
Using staging kde frameworks, mesa drivers.


DMESG LOG

[36789.402970] usb 3-9.4: USB disconnect, device number 5
[36789.402973] usb 3-9.4.2: USB disconnect, device number 6
[36789.459594] kscreenlocker_g[3814692]: segfault at 8 ip 00007f59c29fc954 sp 00007fffde7c2010 error 4 in libQt5XcbQpa.so.5.12.5[7f59c29ea000+ed000]
[36789.459604] Code: 66 0f 1f 44 00 00 f3 0f 1e fa 41 54 53 48 89 fb 48 83 ec 08 48 8b 7f 20 e8 99 55 ff ff 48 8b 7b 20 31 d2 89 c6 e8 0c 7b ff ff <44> 8b 60 08 48 89 c7 e8 70 3e ff ff 48 83 c4 08 44 89 e0 5b 41 5c
[36789.480512] Bluetooth: hci0: read Intel version: 370710018002030d00
[36789.480517] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq