Page 2 of 2 FirstFirst 12
Results 11 to 20 of 20

Thread: Frequent Freezing 13.10

  1. #11
    Join Date
    Nov 2010
    Location
    Madras, India
    Beans
    195
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Frequent Freezing 13.10

    Quote Originally Posted by sudodus View Post
    ... or another instability of this new kernel?

    By the way, have you tested your RAM with memtest yet?
    Yes that was one of the first things I did. Actually I didn't wait till Memtest was fully finished but nevertheless it ran for about an hour and there were zero errors with my RAM. That's what initially made me suspect the mainboard chipset (Intel G41-P33, MSI, quite old by today's standards) was somehow locking up under the new kernel, but it seems it's happening to many people, so it's unlikely to be my hardware...

    On the other hand, I just ran a session of flightgear (the heaviest, hardest driving app I have installed) without the system locking up, whereas before (with zram) flightgear was almost always guaranteed to lead to a freeze. I have just 1Gb so FG consumes ~95% of memory when running. Turning off zram has made a difference but it seems there are other gremlins lurking within the sys still! :-/

  2. #12
    Join Date
    Nov 2011
    Location
    /dev/root
    Beans
    Hidden!

    Re: Frequent Freezing 13.10

    @grahammechanical, You can test by deactivating zRAM

    Code:
    sudo swapoff /dev/zram0
    sudo swapoff /dev/zram1
    # ... depending on how many processors you have
    sudo rmmod zram
    and see if it freezes again. At this stage I think it is important to find out if the kernel freezes also without zRAM.
    Last edited by sudodus; September 21st, 2013 at 10:34 PM. Reason: @ grahammechanical

  3. #13
    Join Date
    Nov 2011
    Location
    /dev/root
    Beans
    Hidden!

    Re: Frequent Freezing 13.10

    Quote Originally Posted by santosh83 View Post
    Turning off zram has made a difference but it seems there are other gremlins lurking within the sys still! :-/
    Yes, I'm afraid there are more gremlins lurking ... 13.10 was very promising earlier, but these bugs that appear late in the release cycle ...

  4. #14
    Join Date
    Nov 2010
    Location
    Madras, India
    Beans
    195
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Frequent Freezing 13.10

    Quote Originally Posted by sudodus View Post
    You can test by deactivating zRAM

    Code:
    sudo swapoff /dev/zram0
    sudo swapoff /dev/zram1
    # ... depending on how many processors you have
    sudo rmmod zram
    and see if it freezes again. At this stage I think it is important to find out if the kernel freezes also without zRAM.
    I used

    Code:
    sudo service zram-config stop
    I suppose it is equivalent to your instructions including the rmmod?

    As I said previously, I have had one crash after zram was turned off as well. I had both normal Firefox as well as Tor browser open together and ~85% of 1Gb RAM was used. There was no significant swap activity prior to the lockup.

    Subsequently I used Flightgear which used up nearly all the RAM and the system didn't crash... so mixed signals. :-/

    It would be interesting if anyone can reproduce this freezing with VirtualBox/VMWare. I guess that might even allow someone familiar with kernel internals to pinpoint the place in the code when everything stops...

  5. #15
    Join Date
    Nov 2011
    Location
    /dev/root
    Beans
    Hidden!

    Re: Frequent Freezing 13.10

    I don't know enough to say if the two methods are equivalent. I received the 'swapoff and rmmod method' from a zRAM expert in the Lubuntu mail community.

  6. #16
    Join Date
    Nov 2010
    Location
    Madras, India
    Beans
    195
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Frequent Freezing 13.10

    Quote Originally Posted by sudodus View Post
    I don't know enough to say if the two methods are equivalent. I received the 'swapoff and rmmod method' from a zRAM expert in the Lubuntu mail community.
    It seems to be equivalent though.

    The two swapoff commands gave "swapoff: /dev/zram0: swapoff failed: No such file or directory" and rmmod gave "Error: Module zram is not currently loaded"

    Can't figure out a command to disable it though. Giving
    Code:
    sudo update-rc.d zram-config disable
    says

    Code:
    update-rc.d: warning: /etc/init.d/zram-config missing LSB information
    update-rc.d: see <http://wiki.debian.org/LSBInitScripts>
     System start/stop links for /etc/init.d/zram-config do not exist.

  7. #17
    Join Date
    Apr 2006
    Location
    New Hampshire, U.S.A.
    Beans
    2,541
    Distro
    Ubuntu Development Release

    Re: Frequent Freezing 13.10

    I get frequent freezes with 13.10-x on switching between windows with Alt-Tab.

    Leave a little bit of each window visible and switching with cursor select works normally.

    No way to do ubuntu-bug when it's frozen since nothing works but the cursor.

  8. #18
    Join Date
    Mar 2006
    Location
    Williams Lake
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Frequent Freezing 13.10

    Quote Originally Posted by santosh83 View Post
    It seems to be equivalent though.

    The two swapoff commands gave "swapoff: /dev/zram0: swapoff failed: No such file or directory" and rmmod gave "Error: Module zram is not currently loaded"

    Can't figure out a command to disable it though. Giving
    Code:
    sudo update-rc.d zram-config disable
    says

    Code:
    update-rc.d: warning: /etc/init.d/zram-config missing LSB information
    update-rc.d: see <http://wiki.debian.org/LSBInitScripts>
     System start/stop links for /etc/init.d/zram-config do not exist.
    Wouldn't zram be running as a service, and the command to turn it off should be:

    Code:
    sudo service zram off

  9. #19
    Join Date
    Nov 2010
    Location
    Madras, India
    Beans
    195
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Frequent Freezing 13.10

    Quote Originally Posted by cariboo907 View Post
    Wouldn't zram be running as a service, and the command to turn it off should be:

    Code:
    sudo service zram off
    That's indeed what I used to turn off zram. In fact:

    Code:
    sudo service zram-config stop
    which works, but zram is again enabled on next reboot. I was looking for a way to permanently disable it, hence that update-rc.d attempt which failed.

  10. #20
    Join Date
    Apr 2008
    Location
    Southern California, USA
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: Frequent Freezing 13.10

    Quote Originally Posted by Kevin_Belrey View Post
    I'm running Regular Gnome Ubuntu 13.10.
    If this is Ubuntu Gnome, then yes I use to get freezes at various times. I could always get it to freeze by clicking the Gnome3 Activities Empathy. Evolution would freeze sometimes, but Empathy anytime. Throughout the day though it would freeze for seemingly unknown reason..until I installed nvidia-173 video driver. Now nothing freezes. nouveau obviously is the reason.
    boot_info_script | AMD64 Athlon X2 Dual-Core - nVidia Geforce 6150 SE - 4GB DDR3

Page 2 of 2 FirstFirst 12

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •