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 recently updated my laptop from 12.04 to 12.10. And now, whenever I lock screen with "CTRL+ALT+L", the screen locks, and monitor turns off. But within 30 seconds, it turns on and asks for password. After some time, it says 'Time expired' and turns off. This keeps happening until my battery goes dead. :-1

Please assist me with this.

Also, I'm using Dell Inspiron 15R (5520) (no external graphics card). Often the fan speed goes very high for sometime. If you have any solution, please help me. Thanks.

share|improve this question

1 Answer 1

up vote 2 down vote accepted

Sometimes applications like ktorrent or certain media players have a setting to prevent the computer from going to sleep. They can sometimes even interfere with the screen lock.

Try closing these apps if running in the background, and if it works, try searching for such settings and change it to suite your needs.

For example in VLC, the setting is under-

Tools > Preferences > set options to Show All > Advanced > Inhibit the power management daemon... checkbox

Just clear it and check if it works.

share|improve this answer
    
That worked!! Thanks a lot! (: –  Crocode Mar 7 '13 at 21:00

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.