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Thread: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

  1. #1
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    upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    The title says it all... I use Dell Latitude D620. Found this bug link: https://bugs.launchpad.net/ubuntu/+bug/875242

    Any workarounds in the meantime?

    Thanx!

  2. #2
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    Yes, a workaround is to remove the laptop battery, it actually says this on the bug report too... I did a fresh install, but the problem remains when the battery is connected.

  3. #3
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    Unhappy Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    Quote Originally Posted by mexp View Post
    Yes, a workaround is to remove the laptop battery, it actually says this on the bug report too... I did a fresh install, but the problem remains when the battery is connected.
    Great workaround... but when you have a MacBook Pro, you can't remove the battery...

    Is it dangerous to just kill the process?

  4. #4
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    I don't know if you could kill the process from command line with some extra --force options, but at least from the System Monitor Process list it's not possible - the process just won't die!

  5. #5
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    ...hoping this bug will be fixed soon - I have a brand new battery and it lasts about 35 minutes when one of the CPU's is running on 100% all the time

  6. #6
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    Quote Originally Posted by mexp View Post
    I don't know if you could kill the process from command line with some extra --force options, but at least from the System Monitor Process list it's not possible - the process just won't die!
    That doesn't surprise me. The process is a root process, it can only be killed by a root user (using su or sudo).

    I haven't tried killing it as I don't know what the consequence may be for my battery. I don't want to break my hardware...

    So for now I don't use ubuntu, I keep using OS X. Too bad...

  7. #7
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    I have had the same problem since i upgraded to 11.10. I was able to "idle" the process once i found it's pid in terminal. Technically it's still running but it no longer gobbles all my cpu cycles:

    $ ps -aux

    then after looking for its PID in the list:

    $ sudo kill -kill 280

    That does it for me everytime but only till i log in again from booting, or suspending, or from idling. The command is running but at very very low cycle levels.

    I am now trying without the battery and after suspending i was able to come up to a system running at only 6% CPU usage cause i have 8 tabs open in chrome and 3 terminals open and nautilus too.

    Can't wait for the fix.



    No witty quotes, I'm missing a few crucial neurons!!
    Last edited by johnneebee; October 30th, 2011 at 11:46 PM. Reason: typos and corrections

  8. #8
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    I wonder if this would have anything to do with a replacement battery (instead of original Dell battery). Does this bug affect other kind of hardware combinations? Waiting for the fix... Killing the process as root helps

  9. #9
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    Well, this is really annoying, as even if I kill the process, it will start using 100% CPU after a while again... Please someone, please! Would not want to revert to 11.04

  10. #10
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    Re: upstart-udev-bridge uses 100% CPU after upgrade 11.04 -> 11.10

    So this seems to me that it's a problem with the replacement battery. I went to a store where they sell old laptops, and tested my system with an original Dell battery - and this process doesn't hang. I did this two, three times, every time same result.

    Perhaps someone else could confirm this? And I wouldn't mind having this fixed anyway, original Dell batteries are twice the price of the replacement batteries.
    Last edited by mexp; November 17th, 2011 at 05:04 PM.

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