[snip] >> Hey Mark, I'm happy to say I just fixed the screen backlighting on my >> system, but I'm sorry to say I don't think it will help you with >> keyboard backlighting. To fix it, I removed 'acpi_backlight=vendor' >> from grub and added 'echo 0 > >> /sys/class/backlight/intel_backlight/brightness' to >> /etc/local.d/backlight.start and made that file executable. Now >> backlight control works perfectly via the keyboard shortcuts with no >> other configuration and no xbacklight. I'm on >> hardened-sources-3.2.2-r1. >> >> BTW, I noticed baselayout1.start and baselayout1.stop are no longer >> created in /etc/local.d. >> >> - Grant >> > > Hi Grant, > OK, that's interesting info. Here's what I'm currently seeing: > > slinky ~ # uname -a > Linux slinky 3.2.10 #1 SMP PREEMPT Tue Mar 13 09:45:35 PDT 2012 x86_64 > Intel(R) Core(TM) i7 CPU Q 740 @ 1.73GHz GenuineIntel GNU/Linux > slinky ~ # ls -al /etc/local.d/ > total 20 > drwxr-xr-x 2 root root 4096 Feb 23 21:03 . > drwxr-xr-x 72 root root 4096 Mar 16 11:53 .. > -rw-r--r-- 1 root root 387 Feb 23 21:03 README > -rwxr-xr-x 1 root root 123 May 3 2011 baselayout1.start > -rwxr-xr-x 1 root root 217 May 3 2011 baselayout1.stop > slinky ~ # ls -la /sys/class/backlight/asus_laptop/ > total 0 > drwxr-xr-x 2 root root 0 Mar 16 04:35 . > drwxr-xr-x 3 root root 0 Mar 16 04:35 .. > -r--r--r-- 1 root root 4096 Mar 16 12:09 actual_brightness > -rw-r--r-- 1 root root 4096 Mar 16 12:09 bl_power > -rw-r--r-- 1 root root 4096 Mar 16 11:40 brightness > lrwxrwxrwx 1 root root 0 Mar 16 12:09 device -> > ../../../asus_laptop > -r--r--r-- 1 root root 4096 Mar 16 11:40 max_brightness > lrwxrwxrwx 1 root root 0 Mar 16 04:35 subsystem -> > ../../../../../class/backlight > -r--r--r-- 1 root root 4096 Mar 16 12:09 type > -rw-r--r-- 1 root root 4096 Mar 16 04:35 uevent > slinky ~ # cat /sys/class/backlight/asus_laptop/brightness > 15 > slinky ~ # > > So, it seems to me that following your example, if I wanted to > experiment with screen backlighting what would I do? I'm in KDE BTW in > case we're doing something different in that regard. > > I see in the Global Keyboard Shortcuts in KDE that there are > Monitor Brightness Down/Up controls defined but I'm not understanding > what keys actually control those. I Googled around for a minute and > found Fn-ArrowUp/ArrowDn but they didn't work o I'm hoping you can > tell me and save me a few minutes. Maybe it's because I haven't > started something required? > > acpi_listen on n-ArrowUp/Dn does produce a response so maybe I > don't have something properly mapped?
Have you tried adding 'acpi_osi=Linux acpi_backlight=vendor' to grub? Is asus_laptop all you have in /sys/class/backlight? > I do have baselayout1.start/stop stuff so it seems our systems are > fairly different. My new install doesn't have them, but all of my old installs do have them and 'equery b /etc/local.d/baselayout1.start' comes back with nothing so I don't think they're being installed anymore. - Grant
