I have acer aspire 5734z with gma 4500 running archlinux. best solution for me is adding GRUB_CMDLINE_LINUX="acpi_osi=Linux" to /etc/default/grub then update grub. still starts dark but brightness keys work. it is kernel issue not the operating system. See here https://lkml.org/lkml/2011/4/5/172 I think "acpi_osi=" works also
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/910536 Title: Screen too dark, no backlight, unusable X To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/910536/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
