ok, the second log seems to indicate an intel driver or xorg issue
"(II) intel(0): No memory allocations
Fatal server error:
Failed to submit batchbuffer: Bad file descriptor
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional
information."
** Package changed: gdm (Ubuntu) => xorg-server (Ubuntu)
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in ubuntu.
https://bugs.launchpad.net/bugs/693446
Title:
Switch user loses session and logs out
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