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dmaschine

Member

Registered: 2013-06-20

Posts: 24

Lenovo z500 can't adjust brightness

Hello all,

I can't adjust brightness on my Optimus-based Lenovo Laptop (z500). Whether I use F-Keys or adjusting brightness in /sys/class/backlight/intel_backlight/brightness. The display remains nearly black, which makes it very difficult to use it properly..

Update:
Adding acpi_backlight=video to by boot conf worked!

Can be closed

Last edited by dmaschine (2015-10-10 09:18:33)

boban_dj

Member

Registered: 2015-03-17

Posts: 150

Re: Lenovo z500 can't adjust brightness

You can add SOLVED in the title