Public bug reported:
This bug was present in Ubuntu Gnome 16.04 LTS with GDM, but did a clean
install of Ubutnu 16.04 LTS with Unity and LightDM, and the bug is still
present.
How to reproduce:
1. Boot the system, wait for LightDM to start and show the Ubuntu Unity greeter.
2. Log in as a user.
3
** Attachment added: "kern.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1652644/+attachment/4796644/+files/kern.log
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https://bugs.launchpad.net/bugs/1652644
I was tailing /var/log/kern.log when I switch to a new user, and then
back to mine user again - then the screen goes blank. Here is the tail:
Dec 26 17:35:25 nuc gnome-session-binary[3980]: Entering running state
Dec 26 17:36:36 nuc kernel: [ 2890.006683] [ cut here ]
Dec 2
I have now tested the new kernel for two days, and unfortunately, after
several user switches I got a blank screen again :-( However, the kernel
does not output any errors. So it seems this bug is not kernel related.
Here is a log from lightdm, which is the only log I could find with an error:
[+2
The tested kernel was: linux-image-4.10.0-041000rc2-generic
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https://bugs.launchpad.net/bugs/1652644
Title:
Switching users in Ubuntu/Ubuntu Gnome freezes graphics
Status
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