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[private_lock <private_lock@xxxxxxxxx>]

:~$ apport-collect 1509839
ERROR: Could not import module, is a package upgrade in progress?  Error: No module named PyQt5.QtCore

I suspect, this was not, what you wanted to see? Oh ... I'm going to try
to run it from the lifesession... but not this evening anymore, sorry.

@Stefan

Nope, there was no automatic switch. I did this myself manually right
after clicking the offending "try Kubuntu" Button. Actually I prepared
this step by switching back and forth to the console before, just to
make sure, it will go smooth and not hang, while bash is still starting.

Gonna try Alt-F2 and nomodeset ... tomorrow

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https://bugs.launchpad.net/bugs/1509839

Title:
  segfault on start of live session in kactivitymanager / libqt5sql

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I've installed 15.10 Wily Werewolf to my USB stick via usb-creator and restart the laptop
  on boot, I'm asked for the language and if I want to install or try a live session
  I select try life session, the dialog disappears and the machine is frozen

  Next try:
  boot to selection dialog
  switch to console crtl+alt+F1 (takes a moment)
  issue alt+syreq+1 and alt+sysreq+t ... both answer "operation is disabled"
  switch back to X ctrl+alt+F7 & click try live session
  immediately switch back to console ctrl+alt+F1
  watchdog detects hard lockup a few seconds later
  see attached screenshot

  reproduced also in beta1 of wily werewolf ... a month ago I imagine
  the beta was still starting, as for bug #1492840. But I've reformated
  the stick meanwhile and cannot really guarantee, that I didn't confuse
  the multiple ISO's I tried in short time.

  version information:
  kernel 4.2.0-16-generic #19-Ubuntu (4.1.0-3-generic #3-Ubuntu)
  libqt5sql.so 5.4.2 (both)
  currently running Kubuntu 15.04 on the same hardware

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