Public bug reported:
On a fresh installation of Ubuntu 11.10 I got problems with the
brightness. As soon I try to change it with the keyboard keys I am not
able to increase it to a usable value.
The problem is related to the max_brightness set as 1025, while the normal
value when the system starts is 119443. These two values comes from the files:
/sys/devices/pci0000:00/0000:00:17.0/0000:04:00.0/drm/card0/card0-LVDS-1/nv_backlight/brightness
/sys/devices/pci0000:00/0000:00:17.0/0000:04:00.0/drm/card0/card0-LVDS-1/nv_backlight/actual_brightness
/sys/devices/pci0000:00/0000:00:17.0/0000:04:00.0/drm/card0/card0-LVDS-1/nv_backlight/max_brightness
** Affects: xserver-xorg-video-nouveau (Ubuntu)
Importance: Undecided
Status: New
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which is subscribed to xserver-xorg-video-nouveau in Ubuntu.
https://bugs.launchpad.net/bugs/876416
Title:
Low brightness on MacBookPro 7.1 (nvidia VGA)
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