Sadly, I'm not a programmer. Anyways, I wanted to report it - and would
be very thankful if this bug could be fixed in one of the next kernel
releases. :) Thanks in advance, Sebastian
Am 21.07.22 um 10:53 schrieb Bastien Nocera:
On Tue, 2022-07-19 at 11:38 +0200, Sebastian Arnhold wrote:
Dear developers,
when using GNOME 42.3 on Wayland on my ASUS ExpertBook B5 Flip, it
reports my stylus battery to be stuck at 1% all the time, independent
of
its actual charging status. This is also independent from the stylus
I
use, as I've tried with two different ones.
The battery device registers as ELAN9008:00 04F3:2E12 in GNOME energy
settings.
The GNOME developers helped me track the bug down to upower, as
upower
itself shows the charging status to be stuck at 1%. The upower
developers then sent me here.
My kernel version is 5.18 on an x86_64 architecture on Fedora 36. My
upower version is 0.99.19.
Observed behaviour: Kernel reports 1% after pen is switched on and
touches the touchscreen for the first time. upower reports this to
GNOME
which then throws a "Battery low"-warning message.
Expected behaviour: Kernel reporting the correct charging percentage
from the pen to upower, or 0% if charging status cannot be
determined.
The latter would be a workaround since 0% seems to be ignored by
GNOME.
Can you help me to resolve this bug?
You'll probably want to implement a patch similar to this one:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f3193ea1b6779023334faa72b214ece457e02656
Cheers
