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Thread: laptop freezes and screen flickers

  1. #1
    Join Date
    Dec 2007
    Beans
    27

    laptop freezes and screen flickers

    I recently did a fresh install of Ubuntu 12.04 on my laptop which has the following specifications:
    CPU: Intel Pentium B950
    Graphics: Intel Integrated Graphics 2000
    Memory: 4GB

    Everything works fine, however occasionally the computer freezes (I can still move the mouse, but nothing responds) and the screen starts flickering. The only thing I can do is a hard reboot. I think I am experiencing exactly the same problems as described here:
    http://ubuntuforums.org/showthread.php?t=2051176

    The following suggestions were given there:
    1. "look into the system log file if you can find any hint on the crash"
    2. "And find out how long it takes for the CPU/Graphics chip to overheat using the later distros."

    How do I do these two things?

    Also, I found this thread
    http://askubuntu.com/questions/15632...untu-12-04-lts
    However doing
    Code:
    unity --reset
    gave me a lot of warnings and errors.

    Thanks a lot for your help in advance!

  2. #2
    Join Date
    Dec 2007
    Beans
    27

    Re: laptop freezes and screen flickers

    Just as an update, when the computer freezes and the screen starts flickering, the brightness slidebar also appears as a notification in the upper right corner.
    Also, I'm not completely sure about that, but the problem seems to occur predominantly when I'm running on the battery and I leave the computer idle for some time.
    Any ideas?

  3. #3
    Join Date
    Dec 2007
    Beans
    27

    Re: laptop freezes and screen flickers

    bump

  4. #4
    Join Date
    May 2007
    Location
    The New Forest
    Beans
    Hidden!
    Distro
    Xubuntu

    Re: laptop freezes and screen flickers

    Thread moved to General Help.

  5. #5
    Join Date
    Dec 2007
    Beans
    27

    Re: laptop freezes and screen flickers

    Some further testing shows that maybe this problem is related to the desktop environment used. I get the problem when I'm using GNOME or KDE, but the problem does not exist when I'm using FVWM for example. However still haven't found a solution to the problem. Is it possible that it is some kind of a bug, or just bad configuration on my part?

  6. #6
    Join Date
    Dec 2007
    Beans
    27

    Re: laptop freezes and screen flickers

    bump

  7. #7
    Join Date
    Dec 2007
    Beans
    27

    Re: laptop freezes and screen flickers

    Ended up upgrading to Ubuntu 12.10 and this seems to have fixed the problem.

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