Ubuntu
linux package

  1. Bug #311716
  2. Comment #26

Comment 26 for bug 311716

Revision history for this message
aaron (microsoftenator) wrote :

After updating to 2.6.27-11.23 from intrepid-proposed, my backlight keys stopped working altogether. They had been working perfectly since 2.6.27-11 but now this:
cat /proc/acpi/video/VGA/LCD/brightness
< not supported >
After downgrading to 2.6.27-11.22:
cat /proc/acpi/video/VGA/LCD/brightness
levels: 100 60 20 28 36 44 52 60 68 76 84 92 100
current: 60
And the keys work perfectly again. It is likely related to this fix in the changelog:
 [ Andy Whitcroft ]

  * SAUCE: don't use buggy _BCL/_BCM/_BQC for backlight control
    - LP: #311716, #314119