X200: Brightness broken since 2.6.29-rc4-58-g4c098bc

Nico Schottelius
2009-02-13T09:34:13Z

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Hello!

When using
- vmlinuz-2.6.29-rc4-ikn-00058-g4c098bc or
- vmlinuz-2.6.29-rc4-ikn-00211-g37bed90

the brightness of the LCD is almost off (lowest level),
although kernel reports otherwise:

[10:31] ikn:~% cat /proc/acpi/video/VID/LCD0/brightness
levels: 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 100
current: 100

Changing the brightness via echo 20 > /proc/acpi/video/VID/LCD0/brightness
only changes the value displayed, the display always keeps the same
brightness.

The last time I saw it working was vmlinuz-2.6.29-rc4-ikn-00001-gd5b5623.

Sincerly,

Nico

ps: please CC on reply

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