Yes, it seems to be the same problem, despite it appears on different kernel versions in Ubuntu:
Lcd brightness control works with:
-Jaunty's linux-image (the Fn keys don't work, but Gnome can control the brightness)
-Karmic's linux-image-2.6.30 (before changing to 2.6.31),
-http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30.5/ (the one I'm now using)
So in Ubuntu there seems to be a regression in kernel 2.6.31.
Note: I also get the same message when removing and inserting sony_laptop module:
"sony-laptop: brightness ignored, must be controlled by ACPI video driver"
Yes, it seems to be the same problem, despite it appears on different kernel versions in Ubuntu:
Lcd brightness control works with: kernel. ubuntu. com/~kernel- ppa/mainline/ v2.6.30. 5/ (the one I'm now using)
-Jaunty's linux-image (the Fn keys don't work, but Gnome can control the brightness)
-Karmic's linux-image-2.6.30 (before changing to 2.6.31),
-http://
And it does NOT work with: 2.6-31- 5 to -10, as mentioned above kernel. ubuntu. com/~kernel- ppa/mainline/ v2.6.31/
-Karmic's linux-image-
-http://
So in Ubuntu there seems to be a regression in kernel 2.6.31.
Note: I also get the same message when removing and inserting sony_laptop module:
"sony-laptop: brightness ignored, must be controlled by ACPI video driver"