Bug 480612

Summary:	Battery status is all messed up after wake from sleep
Product:	[Unmaintained] Powerdevil	Reporter:	Gurenko Alex <agurenko>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	me, natalie_clarius, nate, nicolas.fella
Priority:	NOR	Keywords:	qt6
Version First Reported In:	5.92.0
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	example of the wake up behavior

Description Gurenko Alex 2024-01-31 17:50:09 UTC

SUMMARY
I have a Lenovo P1 gen.2 laptop where I'm testing Plasma 6 on bare metal. After waking from sleep things are going south: basically I'm able to reproduce one of two scenarios:

- Battery shows 0% (Discharging) and immediately shows popup for going into suspend due to low battery
- Battery shows 10% (Discharging) and after a minute or so popup shows up with low battery warning

Luckily Plasma 6 shows a popup where you can cancel suspend. Needless to say that this is happening with power connected and battery being fully charged.

STEPS TO REPRODUCE
1. Put laptop to sleep
2. Wake up laptop

OBSERVED RESULT

See above. Battery reported as 0% or 10% and all power warning associated with low battery.

EXPECTED RESULT

Correct battery reading and according behavior

SOFTWARE/OS VERSIONS

Operating System: Fedora Linux 40
KDE Plasma Version: 5.92.0
KDE Frameworks Version: 5.248.0
Qt Version: 6.6.1
Kernel Version: 6.8.0-0.rc2.19.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-9850H CPU @ 2.60GHz
Memory: 31.0 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 630
Manufacturer: LENOVO
Product Name: 20QUS10L16
System Version: ThinkPad P1 Gen 2

ADDITIONAL INFORMATION

It might be coming from the kernel 6.8.0 that is still in development, but that's how this week's Fedora 40 testing going on.
I remember I used to have such behavior on plasma 5.xx long time ago and it went away and I have not seen any issues on this laptop for a long time.

Comment 1 Gurenko Alex 2024-01-31 17:50:36 UTC

Created attachment 165404 [details]
example of the wake up behavior

Comment 2 Gurenko Alex 2024-01-31 17:52:12 UTC

Just tried to wake up from battery power it jumped to interesting 33%, while prior to sleep it was around 68%.

Comment 3 Nate Graham 2024-02-01 20:40:45 UTC Comment hidden (spam)

If something crashed, we need a backtrace of it so we can figure out what's going on. Can you please attach a backtrace of the crash using the coredumpctl command-line program, as detailed in https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl?

Thanks!

Comment 4 Nate Graham 2024-02-01 20:41:35 UTC Comment hidden (spam)

Oops, wrong bug, sorry!

Comment 5 Nicolas Fella 2024-02-01 21:15:20 UTC

Your screeshot shows that upower reports the same percentage as Plasma. Plasma gets its value from upower, so if that's wrong that's not a Plasma bug

Comment 6 Gurenko Alex 2024-02-05 13:30:14 UTC

Just to close the loop on this one, indeed after upgrade to kernel 6.8.0-0.rc3.26.fc40.x86_64 the issue is resolved (at least to a reported degree). Lockscreen shows now 100% charge upon wake, but after login the batter reports correct status right away.