The patch does not apply cleanly to 2.6.31-11-generic, some minor tweaks are required.
The backlight controls now work partially. Direct write to /sys/devices/virtual/backlight/acpi_video0/brightness yields correct results, i.e. I can set backlight level properly by writing 1..9 to that file, great! However when I am trying to use the hardware buttons it behaves as: 1. brightness is at 9, pressing brightness-up once - brightness is at 9 2. brightness is at 9, pressing brightness-up again - screen is dimmed and acpi_video0/brightness shows 1 3. pressing brightness-up again brings the screen to the max brightness, acpi_video0/brightness shows 9 So it is possible to use only 2 values, 1 and 9 when operating via keyboard. I am attaching both the patch and kernel module, in case someone wants to play with the code on their hardware. ** Attachment added: "acpi/video.c patch for 2.6.31-11-generic" http://launchpadlibrarian.net/32736561/max_level-lp428910.patch -- Acer Aspire 5520 has backlight broken in Karmic Koala https://bugs.launchpad.net/bugs/428910 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
