Results 1 to 4 of 4

Thread: sudden blackout crash

  1. #1
    Join Date
    Jun 2012
    Beans
    31

    sudden blackout crash

    About an hour ago, my screen suddenly went nearly black (black but still powered on) and no key sequences like ctrl-alt-f1 did anything. The only way out that still somehow worked was pressing and holding the power button, resulting in a shutdown. I don't know why it happened. I had 5 tabs open in Firefox, and two Leafpads open, so it could have been a lot of things. Every power manager option for suspend or hibernate was turned off, so it probably wasn't one of those.

    The question is how do I get a log report that would show what was going on in the computer when it happened? I've been looking through things in /var/log and some of that shows startup logs, such as syslog, but where's the log for unusual things happening or errors during a session?

    The next startup after the blackout took an extra long time, but the session is still going without errors right now.

  2. #2
    Join Date
    Nov 2010
    Location
    Chesapeake Bay
    Beans
    119
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: sudden blackout crash

    /var/log/dmesg will show you what happened during startup, might be useful, is often lengthy

    until it happens again I would suspect a power surge / brownout first, and maybe a hardware error second

  3. #3
    Join Date
    Nov 2007
    Location
    Pacific Northwest woods
    Beans
    2,003
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: sudden blackout crash

    Check your fans! It could be an overheating problem.

  4. #4
    Join Date
    Jun 2012
    Beans
    31

    Re: sudden blackout crash

    I looked at dmsg and dmsg.0 (which I guess is from the previous startup)

    This is the extra stuff in dmsg, and it looks like just cleaning up the hard drive from stuff left on it by the crash:

    [ 2.689954] EXT4-fs (sda6): INFO: recovery required on readonly filesystem
    [ 2.689964] EXT4-fs (sda6): write access will be enabled during recovery
    [ 3.938889] ACPI: EC: GPE storm detected, transactions will use polling mode
    [ 27.766737] EXT4-fs (sda6): orphan cleanup on readonly fs
    [ 27.766763] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 130853
    [ 27.766986] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 130971
    [ 27.767012] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 916649
    [ 27.767087] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 916645
    [ 27.767120] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 789515
    [ 27.767170] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 786452
    [ 27.767193] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 786507
    [ 27.767216] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 786526
    [ 27.767278] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 786522
    [ 27.799983] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 786524
    [ 27.800007] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 395781
    [ 27.800115] EXT4-fs (sda6): ext4_orphan_cleanup: deleting unreferenced inode 395794
    [ 27.800194] EXT4-fs (sda6): 12 orphan inodes deleted
    [ 27.800198] EXT4-fs (sda6): recovery complete
    [ 28.766916] EXT4-fs (sda6): mounted filesystem with ordered data mode. Opts: (null)
    [ 50.194956] Adding 455676k swap on /dev/sda5. Priority:-1 extents:1 across:455676k

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
  •