As dmachine writes in arch forum (bbs.archlinux.org/viewtopic.php?id=203602) adding acpi_backlight=video in the grub parameters solves the problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1537979 Title: Lenovo Z500 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1537979/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
