I found this related upstream bug report: https://bugs.freedesktop.org/show_bug.cgi?id=45321
However, I tried out the workaround mentioned in Comment 4 and it didn't work for me. I compiled my kernel with CONFIG_ACPI_PROCFS_POWER=y, but UPower still fails to update the status of the AC adapter.
signature.asc
Description: This is a digitally signed message part
