I have the same problem on my laptop (hp dv2000): the backlight is set to 100% if the value written to /sys/class/backlight/acpi_video0/brightness is not among the values provided in /proc/acpi/video/VGA/LCD/brightness: levels: 100 60 20 28 36 44 52 60 68 76 84 92 100
I think that the kernel has to patched either to return error when setting invalid values, or to set the brightness to the closest valid value. I am attaching a patch for the second option. It is working for me. ** Attachment added: "backlight.patch" http://launchpadlibrarian.net/10519158/backlight.patch -- LCD backlight turns off when between discrete levels, both from hotkeys and from dim-on-idle. https://bugs.launchpad.net/bugs/121833 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
