Bug#692361: ACPI display backlight brightness is set to zero at every boot-up (HP Folio 13-2000)

[Stefan Nagy <public@stefan-nagy.at>]

Hi Jonathan,

> This patch does not seem to be part of linux-next nor in lenb's tree,
> unfortunately.  Please let us know when it is accepted upstream.

OK, sure. I presumed it was accepted already since Zhang Rui marked it
as RESOLVED CODE_FIX.

> Based on <https://bugs.launchpad.net/bugs/1066211> I fear we haven't
> gotten to the bottom of this, since the quirk table entry only applies
> to your model whereas a fundamental fix would apply to all affected
> ones.

I know, but as I understand it, this issue is caused by a BIOS bug, so
there seems to be no way to provide a fundamental fix (at least that's
how I interpreted the mere existence of this quirk table).

Cheers,
Stefan.