Tried to boot with the following kernel parameter (as suggested here:
http://brettshaffer.com/blog/linux/fix-ubuntu-screen-brightness-problem
/comment-page-1/):
nomodeset acpi_backlight=vendor
Which makes the brightness keys work on my ideapad u350.
But in return the graphics aren't that nice du
I have the same problem on my Lenove ideapad u350 32-bit.
I get the folowing from dmesg when pressing Fn+Up/Down:
[ 3024.700954] ACPI: Failed to switch the brightness
[ 3025.561165] ACPI: Failed to switch the brightness
kernel: 2.6.32-21-generic
Setting the brightness with setpci as Marting de
