Can confirm this, on 12.04 this bug is still present, add: acpi_osi=Linux pcie_aspm=off
to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, do sudo update-grub to work with ubuntu on Dell Vostro3700. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/880096 Title: cant change laptop brightness To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/880096/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
