https://bugzilla.novell.com/show_bug.cgi?id=719076 https://bugzilla.novell.com/show_bug.cgi?id=719076#c17 --- Comment #17 from Joey Lee <jlee@suse.com> 2011-11-10 08:24:11 UTC --- (In reply to comment #16)
the brightness controls did NOT work under 11.3... but it booted with the brightness at full level and I never worried about it. I knew before buying the laptop that the brightness controls didn't work because it was documented on linlap.com (see http://www.linlap.com/wiki/acer+emachines+e525). The website documented a workaround but I never tried it as I just never cared as I can't even remember the last time I even wanted to dim my brightness. However, as of 11.4 the backlight stopped working all together and as a result I never got to run 11.4 on the laptop.
OK, thank's for your reply. The brightness control key not work is BIOS issue, only one solution is use acpi_osi=Linux to workaround it and it only for function key. So, in Comment#11, even we try to set brightness level through /sys/class/backlight/acpi_video0/brightness, I don't think it works because the _BCM behind acpi_video0 is broken. Simply say, we cann't workaround original issue by access acpi_video0/brightness because it broken. (BIOS problem) Back to our original issue: a. backlight didn't enable when system boot I thought this issue related to i915's combination mode. Michael Chang have experience on it. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.