GNOME Bugzilla – Bug 467080
Software brightness control on acer laptops not implemented
Last modified: 2007-08-17 10:16:07 UTC
Hi, I have an Acer TravelMate 3260. I am using the acer_acpi module from here - http://aceracpi.googlecode.com/ .. As of the 0.7 release of acer_acpi, software brightness support has been added - root@ubuntu:/proc/acpi/acer# cat brightness 11 The range varies from 0 to 15, and it works perfectly on 3-4 Acer laptops that I have tried. Can support for controlling brightness be added for acer laptops, please ? What more information do I need to provide ? This bug affects the brightness applet in the gnome panel too, I think. Thanks.
acer_acpi needs to support the generic backlight class. Do you get /sys/class/backlight/xxx? Richard.
Richard, that directory is present but it is empty - I've filed a feature request on the acer_acpi bug tracker - http://code.google.com/p/aceracpi/issues/detail?id=9 What is the next thing to be done ? If I want to help out acer_acpi and implement this feature, Richard, can you please provide me a pointer or two on how this is to be done ? Thanks !
>What is the next thing to be done As soon as acer_acpi exports a brightness class device, hal will detect it, and g-p-m with get a capability. Then things just work. ;-) If you look at the sony-laptop or thinkpad-acpi .c files - have a look here http://people.freedesktop.org/~hughsient/quirk/quirk-keymap-modules.html Richard.
Richard - Please mark this bug as INVALID. The code to support the brightness class is already in acer_acpi's subversion tree and will be in my next release there.
Oh, turns out that it was not a gnome bug at all .. Sorry for the noise, but I don't know much about this .. :-)