Sytem freezes at unexpected moments

Asked by Krister on 2019-01-10

My system will freeze periodically. When this happens there is no response from the machine (I cannot even switch to the F3-F7 terminals).

There doesn't seem to be an easily identifiable pattern:
- It happens when I'm using "Ubuntu Wayland" and the X version of gnome3 called "Ubuntu".
- At times this will happen while using a web browser, at other times while editing a file with vi in the terminal.
- Memtest86 does not show any memory errors.

This is happening roughly once every couple of days and is getting in the way of my work.
I was having problems booting the machine that have been solved: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1792100 .

Would anybody please have an idea of how I could debug this issue?

________________________________________________
After the last freeze there were not error message in /var/log/kern.log and in /var/log/syslog I found only these innocuous looking error messages before the freeze:

Jan 10 11:28:21 winters org.gnome.SettingsDaemon.MediaKeys.desktop[5959]: IPDL protocol error: Handler returned error code!
Jan 10 11:28:21 winters org.gnome.SettingsDaemon.MediaKeys.desktop[5959]: ###!!! [Parent][DispatchAsyncMessage] Error: PLayerTransaction::Msg_ReleaseLayer Processing error: message was deserialized, but the handler returned false (indicating failure)
Jan 10 11:28:26 winters systemd-resolved[1075]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP.

MY SETUP:

Ubuntu 18.10 with Gnome3 (both Wayland and X)
Linux 4.20.0-042000-generic #201812232030

Intel Xeon(R) CPU E5-2620 v4 @ 2.10GHz × 32
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Oland GL [FirePro W2100]

Question information

Language:
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Status:
Answered
For:
Ubuntu Edit question
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Last query:
2019-01-10
Last reply:
2019-01-10
Krister (thekswenson) said : #2

I was under the impression that the wayland tag was not the appropriate venue for the question, which seems bigger than wayland because it also happens with X.

Are you saying you want me to mark this question as answered, and keep the other wayland question open?

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