try the whole string: acpi_osi=Linux acpi_backlight=vendor dell_laptop.backlight=0
this worked on my Dell Studio 1558 with 3.8 kernels Alex On 13-04-17 09:27 PM, Luciano Dato wrote: > Oh I forgot ls /sys/class/backlight dell_backlight intel_backlight and > uname -r 3.8.0-18-lowlatency as I've said before > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/568611 Title: Screen brightness control fails on Dell Studio 1558 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/568611/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
