ok works for me now. edited /etc/default/grub
from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_backlight=video" GRUB_CMDLINE_LINUX="nomodeset acpi_backlight=video" acpi_backlight=vendor as suggested in kalvelands link didn't work for me. -- Brightness Keys do not work on Lenovo U350 https://bugs.launchpad.net/bugs/414658 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
