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Tasklist

FS#69035 - Plasmashell fails to start when boot laptop with battery

Attached to Project: Arch Linux
Opened by leo pseft (leopseft) - Saturday, 19 December 2020, 20:11 GMT
Last edited by Antonio Rojas (arojas) - Saturday, 19 December 2020, 23:04 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To No-one
Architecture x86_64
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
When laptop starts or reboots with the battery, only get a black screen with the mouse cursor. Plasmashell fails to start even with manually start.
When laptop is connected to the A/C power can boot normally again.

Additional info:
* 5.9.14 arch1-1
* plasmashell 5.20.4
Qt: 5.15.2
KDE Frameworks: 5.77.0
kf5-config: 1.0
*Nvidia-340xx-dkms GPU driver


Steps to reproduce:
Unplug the A/C power and boot/restart the machine, with only battery power.

Workaround:
Downgrade to the previous kernel (5.9.13) fixes the problem.
   journalctl.txt (130.4 KiB)
This task depends upon

Closed by  Antonio Rojas (arojas)
Saturday, 19 December 2020, 23:04 GMT
Reason for closing:  Not a bug
Comment by leo pseft (leopseft) - Saturday, 19 December 2020, 21:14 GMT
As it seems the problem doesn't related to the kernel and it has to do with the cpu scaling (with the auto-cpufreq). It was difficult to understand that the problem caused by this because the problem still existed after uninstalling the auto-cpufreq, until I plugged in the A/C power.

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