On Sun, 17 Nov 2013 11:06:43 +0100 (CET) x@x wrote: > I have an Acer ASPIRE M5 481T and can't adjust the screen brightness. > It came with windows 8 pre-installed which I removed. > > I used xbacklight and got "No outputs have backlight property" > > Tried "setpci -s 00:02.0 f4.b=XX" without success. > > Also changed the bootloader parameters with "acpi_backlight=vendor" > and didn't work. > > What can I do? Thank you.
I used to have that problem with my notebook, but after I installed the Linux-libre kernel, the brightness adjustment worked. However, it may or may not work on your Acer. I suggest you try it out. Here are the instructions on how to do it. http://jxself.org/linux-libre/
