Home / ubuntu / Questions / 851820
Accepted
Markus Gratis
Asked: 2016-11-21 23:23:40 +0800 CST

Ubuntu 16.04 randomly crashes under high cpu load

  • 772

Since about one week my LapTop on Ubuntu 16.04 crashes at random moments when under high cpu load. That is either during Audio Conversion via TAudioConverter / Wine or Chess Analysis with Stockfish or Komodo in SCIDvsPC, so it is not program-specific.

It immidiately shuts down without any sign of warning.

Where can I find a log file to post, so as to give you more information?


gratis@Aurora:~$ lsblk

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 238,5G  0 disk 
├─sda1   8:1    0 222,6G  0 part /
├─sda2   8:2    0     1K  0 part 
└─sda5   8:5    0  15,9G  0 part [SWAP]

gratis@Aurora:~$ df

Filesystem     1K-blocks      Used Available Use% Mounted on
udev             8153360         0   8153360   0% /dev
tmpfs            1634696      9688   1625008   1% /run
/dev/sda1      229572820 204352820  13535292  94% /
tmpfs            8173468     87072   8086396   2% /dev/shm
tmpfs               5120         4      5116   1% /run/lock
tmpfs            8173468         0   8173468   0% /sys/fs/cgroup
tmpfs            1634696       104   1634592   1% /run/user/1000

gratis@Aurora:~$ free

              total        used        free      shared  buff/cache   available
Mem:       16346940     3572364     5575488      753016     7199088    11623860
Swap:      16690172           0    16690172

gratis@Aurora:~$ grep -i sensor /var/log/syslog*

gratis@Aurora:~$
crash

1 Answers

  1. Best Answer

    You have possibly two different problems here.

    First:

    It appears that you're out of disk space. Some of the programs that you're running may generate huge data files. Open the Disk Usage Analyzer from the Unity dashboard and try to figure out where your disk space has gone.

    You may need to re-partition your hard drive to obtain more working space. If you edit your question to include a current-window-only screenshot of gparted, we can explore that if we need to.

    Second:

    We can't tell if overheating is an issue for you, until we install tools to monitor this.

    Open the terminal app from the Unity dash and type the following commands, one at a time:

    • sudo apt-get update
    • sudo apt-get install lm-sensors
    • sudo apt-get install sensord
    • sudo apt-get install sensors-applet
    • sudo apt-get install indicator-sensors

    Then calibrate the hardware sensors by typing:

    • man sensors-detect # to read the man pages
    • sudo sensors-detect
    • sensors -f # to see it in action

    Then start Hardware Sensors Indicator from the Unity dashboard, and set the preferences to auto-start at login, and to default to Fahrenheit. Monitor this indicator in your top panel and watch that the temperature stays around 120-150 degrees. More and you've possibly got a problem.

    • 0