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) And it does NOT work with: -Karmic's linux-image-2.6-31-5 to -10, as mentioned above -http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.31/ 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" -- Brightness control not working on Vaio TT with 2.6.31 rc6 kernel https://bugs.launchpad.net/bugs/414810 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
