1
vote
1answer
201 views

Brightness keys no longer work

My Fn+F8 and Fn+F9 keys to change the screen's brightness appear to no longer work on my Thinkpad laptop. # ls /sys/class/backlight/ thinkpad_screen Some guide told me to make this: # cat ...
0
votes
0answers
14 views

Black screen on boot (no backlight) [duplicate]

So after grub .screen my computer screen turns black. i can fix it by increasing brightness with F3-key but is there any way to make it boot with full backlight? My kernel parameters are: quiet ...
0
votes
1answer
1k views

HP Spectre XT screen dim (completely dark) on boot. Can this be fixed? [duplicate]

When my computer boots up, the LCD backlight is completely blank. I have to increase the brightness using the keys on my keyboard, and only then am I able to see the login screen. I'm not sure how ...
1
vote
3answers
2k views

Acer Aspire Backlight Problem

I have the same problem as found on this link Screen turns black after booting, backlight only works in recovery mode on an Acer Aspire 5736z I've never used any Linux before so if someone could ...