https://bugs.kde.org/show_bug.cgi?id=518513
Bug ID: 518513
Summary: Power and Battery widget does not show multiple
batteries for a single HID device
Classification: Plasma
Product: plasmashell
Version First master
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Power and Battery widget
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Target Milestone: 1.0
On Linux, HID devices can now expose more than one battery, for example:
- wireless earbuds with left/right earbuds plus charging case
- gaming headsets with headset battery plus charging dock
- split keyboards with one battery per half
Linux kernel support for multiple batteries per HID device is landing for Linux
7.1:
https://www.phoronix.com/news/Linux-7.1-Multi-Battery-HID
>From the article and linked kernel work, the kernel side will no longer be
limited to a single battery per HID device. This likely means Plasma user space
needs follow-up work so these batteries are properly enumerated and labeled in
the Power and Battery widget.
Current issue:
Plasma appears to assume a single battery per device, or at least there is no
obvious UI or labeling path for multiple batteries belonging to one HID device.
Expected behavior:
When a HID device exposes multiple batteries, Plasma should show all of them,
with clear labels where possible, for example:
- Left earbud
- Right earbud
- Charging case
or:
- Headset
- Charging dock
At minimum, multiple batteries for the same physical device should be visible
rather than collapsed into one ambiguous entry.
Why this matters:
With Linux 7.1, support for these devices is improving in the kernel, so Plasma
is likely to start receiving richer battery data for a class of devices that is
now common.
I searched KDE Bugzilla and KDE Discuss but did not find an existing open issue
specifically tracking Plasma support for multiple batteries on one HID device.
Environment:
Operating System: Arch Linux ARM
KDE Plasma Version: 6.6.2
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.2
Kernel Version: 6.18.15-1-1-ARCH (64-bit)
Graphics Platform: Wayland
Processors: 8 × Apple Firestorm (M1 Pro), 2 × Apple Icestorm (M1 Pro)
Memory: 31,0 GiB of usable RAM
Graphics Processor 1: Apple M1 Pro
Graphics Processor 2: Apple M1 Pro
Product Name: Apple MacBook Pro (14-inch, M1 Pro, 2021)
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