Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

i insttalled ubuntu 13.10 on my COMPAQ PRESARIO CQ-41 209TU notebook.but whenever it comes on login screen, display backlight turns to 0.why?please help me.

share|improve this question

1 Answer 1

up vote 0 down vote accepted

I had this problem on a laptop (different type) too. It is usually related the video driver.

As a woraround, I used xbacklight (see How to change LCD brightness from command line (or via script)?) to change the display brightness, and put a call to a script with that command to lighdm startup code (/etc/lightdm/lightdm.conf, either display-setup-script, session-setup-script, or both).

share|improve this answer
    
thanks..it works.. –  oviasif ovihasan Jan 21 at 10:11

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.