https://bugzilla.kernel.org/show_bug.cgi?id=43307
Raffaello D. Di Napoli <fasti...@gmail.com> changed:
What |Removed |Added
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CC| |fasti...@gmail.com
--- Comment #8 from Raffaello D. Di Napoli <fasti...@gmail.com> 2012-10-12
00:16:14 ---
Same issue here, on an HP Pavilion dv7-6c95dx with Intel Core i7-2670QM (Sandy
Bridge) running Gentoo Linux with kernel 3.4.9.
These errors always come in pairs, whenever I try to use the keys Fn+F2 or
Fn+F3 (brightness adjustment):
ACPI Error: [^^^PEG0.PEGP.DD02] Namespace lookup failure, AE_NOT_FOUND
(20120320/psargs-359)
ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.EC__._Q17] (Node
ffff880246833b18), AE_NOT_FOUND (20120320/psparse-536)
The thing that really frustrates me is that this seems to come and go: when I
initially bought this computer, it was not working; then after I found out
about the acpi_backlight=vendor option, and it started working; subsequently an
upgrade or kernel recompilation broke it, but after some other upgrade it
resumed working; now it magically stopped working again.
Right now I’m playing again with the kernel options and the packages I upgraded
recently (including xfce4-power-manager) to see if I manage to figure out what
is it that determines whether or not the brightness adjustment works.
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