Public bug reported:
hi,
i currently have a brightness issue on my notebook. In fact i have this problem
a little longer, but i was hoping that it will be corrected with the time...
unfortunately it is not the case (may i be the only person trying karmic on
this notebook ?!?)
so here is the problem :
when i boot on karmic, i can't increase or decrease the brightness, and by
default it's really dark.
the only solution i found, is really a stupid one :(
switch from X to VT1
use the FN + brightness down key => i receive an error message "ACPI: Failed to
switch the brightness", but it don't work
funnily the brightness up key don't work too, but don't give me any error
message
i close the notebook
i open it and switch to X
if i'm lucky it work
if not i need to do all that stuff again (i don't need to do this a lot,
maximum 3 or 4 times)
if first through it may be an KMS problem (because KMS disable brightness on my
other notebook) so i already disabled it.
but even after disabling it, netheir my brightness keys, xbacklight, or the
brightness applet worked :(
/sys/class/backlight is empty
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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brightness dark and not working on acer 5715
https://bugs.launchpad.net/bugs/401591
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