[Bug 36885] Re: Asus laptop hangs on TFT/VGA video switch (Fn-F8)

[Paul Sladen]

  Alt-SysRq-s Alt-SysRq-u Alt-SysRq-b

is Sync, Unmount, reBoot and is the lowest-level commands you can send to the kernel when it has crashed.

There is no event defined for video-switching, but the BIOS is still trying to perform the switch.

Can you drop to a console with:

  Ctrl-Alt-F1

and then run:

  sudo tail -f /var/log/messages

whilst trying to pressing the Fn-F8 key combination.  Does anything get displayed on the console?

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Asus laptop hangs on TFT/VGA video switch (Fn-F8)
https://launchpad.net/bugs/36885