Messages in this thread | | | Date | Thu, 3 Apr 2014 02:14:11 -0400 | From | Steven Rostedt <> | Subject | [BUG] x86: reboot doesn't reboot |
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I noticed that one of my test boxes no longer does a reboot with the latest kernel. It goes down and shows:
[ 51.589896] reboot: Restarting system [ 51.593567] reboot: machine restart
And the system sounds like it turns off (the fans stop), but then I just sit there and wait, and wait and wait. The system never starts up again.
I did a bisect and it landed on: a4f1987e4c54 "x86, reboot: Add EFI and CF9 reboot methods into the default list" which looks like a very likely suspect. I removed that and fb3bd7b19b2b, as the second commit was just a fix up of the first, recompiled, installed and rebooted to that kernel. I tried to reboot again and sure enough after posting the "machine restart" I started getting those "Press any key to continue." messages again. That's a good sign.
Linus mentioned to me to use "reboot=pci" on the kernel command line, but no dice. That doesn't seem to make a difference.
I see in the merge commit:
Pull x86 reboot changes from Ingo Molnar: "Refine the reboot logic around the CF9 and EFI reboot methods, to make it more robust. The expectation is for no working system to break, and for a couple of reboot-force systems to start rebooting automatically again"
Unfortunately, the expectation of no working system to break, didn't quite stand up to expectations :-/
-- Steve
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