Can you try the debugging kernel I posted at
http://people.canonical.com/~herton/lp950056r1/ ?
And do the same testing again with the options:
reboot=k
reboot=t
reboot=l
reboot=h
This test kernel disables the fallback for the reboot by keyboard/triple
fault options, by default if reboot using keyboard controller (reboot=k)
doesn't work, the kernel will try reboot with triple fault later, so we
can't be sure what doesn't work. With this new kernel, we will see if
reboot by keyboard works sometimes or never works, the same with the
triple fault method.
In addition, I added two variations for the reboot by keyboard
controller method, 'l' and 'h', I'm curious to see if there will be some
difference (they use different delays or halt the code execution after
doing the reset command).
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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https://bugs.launchpad.net/bugs/950056
Title:
Reboot hangs on Dell OptiPlex 780 (board 03NVJ6); reboot=bios works
around
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