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Thread: Computer freezes randomly, need help finding a cause, and hopefully a solution

  1. #1
    Join Date
    Feb 2012
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    30

    Angry Computer freezes randomly, need help finding a cause, and hopefully a solution

    My HP DM1Z has been freezing since I installed Ubuntu 12.04 64-bit on it. I'm dual booting with Windows 7 64 bit, and though I don't use it super often, I have no freezing problems with windows. At first I thought the problem in Ubuntu was related to the wifi, since it always seemed to happen when I was either downloading something or using firefox. However, in the last few days it has happened even when I have the wifi turned off. Last night I did a fresh install, hoping this would take care of whatever was the matter. Unfortunately it did not, and I've had two freezes today. It's an extremely hard freeze, immune to magic REISUB. It happens once or twice a day, and I have to do a hard reset each time. Not exactly easy on the hard drive, so I'm eager to get it fixed.

    If anyone has any suggestions for how to go about troubleshooting this, I'd really appreciate it.

  2. #2
    Join Date
    Mar 2011
    Location
    U.K.
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    I am in dual boot configuration (Vista + Ubuntu 10.10).

    In Ubuntu I now run Firefox in safe mode which seems to reduce the frequency of crashes.

    Go to Firefox toolbar > Help > Restart with Add-ons Disabled

    and select Safe Mode after Firefox restarts.

    I've moved my Firefox plugins out of the mozilla folder into a backup folder.

    You could try enabling Add-ons or Plugins one at a time to see if any is the problem.

    Or you could try Opera instead of Firefox.

    Flash seems to be one suspect. Do you access flash sites?

    You might try bleachbit to clean out caches.

  3. #3
    Join Date
    Jul 2005
    Location
    England
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    Hidden!

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    Could be all sorts of reasons.

    Have you run memtest86+ from grub? If not do so and leave it running for several hours, or overnight, and look for any error notes on the bottom line. You have to manually stop the test as it runs until stopped.

    Alternatively make sure you have the correct and most up-to-date video drivers for your graphic card, as bad drivers can also cause this type of freeze.

    Power supply may be the next thing to check, but I have no idea how to do that from within a ubuntu or windows OS..
    DISTRO: Xubuntu 14.04-64bit --- Code-tags --- Boot-Repair --- Grub2 wiki & Grub2 Basics --- RootSudo

  4. #4
    Join Date
    Feb 2012
    Beans
    30

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    Thanks for the replies! I'll try running memtest tonite and see what comes up. That's pretty nasty if firefox is causing whole system crashes. Is there any good way to find out what process it was that locked everything up?

  5. #5
    Join Date
    May 2008
    Location
    Twisty roads of WV
    Beans
    Hidden!
    Distro
    Ubuntu 13.04 Raring Ringtail

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    I have had this happen a few times, and as I am always tinkering with older hardware, it seemed to be a piece of hardware going into failure such as a HD, NIC, or other device. Just something to think about.
    "Once you lick the lollipop of mediocrity, you SUCK forever!"

  6. #6
    Join Date
    Feb 2012
    Beans
    30

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    Memtest reports no errors. There seems to be a lot of discussion here of this bug, but there's not much I can take from it: https://bugs.launchpad.net/ubuntu/+s...7?comments=all

  7. #7
    Join Date
    Feb 2012
    Beans
    30

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    I've switched to chrome over the last week or so, and have had no freezes. Looks like it was indeed something to do with firefox. Anyone else having the problem: don't use firefox anymore!

  8. #8
    Join Date
    Feb 2009
    Beans
    72

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    Try running firefox from the terminal next time and see if it produces any errors. Most likely you will see all kinds of stuff show up but see if it freezes again and post any output.

    Also, try running top in the terminal if possible. This will give you an indication of what programs are hogging your cpu or ram.

  9. #9
    Join Date
    Feb 2012
    Beans
    30

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    Just had a freeze again, and when I restarted (Magic REISUB worked this time), I got an error reporting window saying Ubuntu had an internal error. I've had this before.

    The executable path was:
    /usr/sbin/bluetoothd

    package:
    bluez.498-2ubuntu7

    title:
    bluetoothd crashed with SIGSEV in g_main_context_dispatch()

    more than that is an insane amount of typing (can't copy and paste from the error dialog). Anything useful in there?

  10. #10
    Join Date
    Jun 2012
    Beans
    1

    Re: Computer freezes randomly, need help finding a cause, and hopefully a solution

    i have the same problem,
    with th hp dm1 and 12.04

    always when i see flashvideo

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