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This fault has only emerged since upgrading from Ubuntu 14.04.4 to 16.04. My laptop is an Acer Aspire E13, Intel Pentium N3540 no graphics card. I am duel booting this laptop, no issues with windows suggesting it is not a hardware issue.

Specifically the fault is a freeze of Ubuntu when using unity with no obvious trigger. Once frozen no response at all can be elicited.

I originally thought this may be a flash problem as I have in the past had similar problems with flash plugins and Ubuntu/other linux distros. However purging and reinstalling does not seem to improve the situation. I have also tried a number of different browsers in an attempt to see if this effects the frequency of the fault, it doesn't seem to. I also attempted turning off hardware acceleration again no fix.

The major issue I have is that the freeze is total, there is no way to move from tty7 (unity) to tty1-6 in an attempt to read the logs and because a forced shutdown is the only way to get a response I can find no record of the fault after restart.

How can I go about debugging this fault? Has anyone seen a similar fault and know the solution?

Thanks in advance

Zanna
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Jakob45
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2 Answers2

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I use Ubuntu-MATE 16.04 and I have freezes when i play dota 2 but I think this is a steam and radeon driver problem. About identifying the problem:

  • If it's an xorg problem the you can see the file ~/.xsession-errors or the file /var/log/Xorg.0.log as described here: Where is Xserver log file located?
  • There's also the application Logs from the package gnome-logs (I use the application Log File Viewer from the package mate-utils) to see various log files.
  • If you are suspicious what application causes the problem, for example firefox, then run in terminal firefox |tee firefox.txt and this will create a firefox.txt file at your home folder with the output of the command firefox, so even if your system freezes then you can read the file firefox.txt afterwards and see if there was an error.

Hope that helps.

Community
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Thanos Apostolou
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Try this... it stopped the hangs with mine. I have the same set up as you.

sudo nano /etc/default/grub

Edit the following line:

GRUB_CMDLINE_LINUX_DEFAULT=

Add intel_idle.max_cstate=1 to the other parameters.

Zanna
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cowboyaxe
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