On Sun, Aug 02, 2015 at 09:58:33PM +0200, Patrik Lundin wrote: > Hello, > > I have noticed that my laptop has been rebooting itself from time to > time. Unfortunately it does not go into ddb. The only hint I have that > something went wrong is the following messages in last: > === > patrik@major:~$ last | grep crash > patrik : Sat Aug 01 08:34 - crash (1+10:18) > patrik : Sun Jul 19 08:50 - crash (13:33) > patrik : Sat Jul 04 06:54 - crash (1+03:19) > === > > This might have been going on for a while. Looking through the older > /var/log/wtmp files, the oldest "crash" entry I could find was this: > === > patrik : Sat May 30 10:08 - crash (10:41) > === > > I have been hesitant to report this since I don't have any real > information to bring to the table. I have no idea how to trigger the > reboot. Most times I have just noticed that my laptop is suddenly > in the boot phase. > > Let me know if there is something I can do to try to find out what is > happening. I have made sure that "ddb.panic" is set to 1. > > -- > Patrik Lundin
I've also had a spontaneous reboot of my x220 while using it during c2k15. One theory is that there's a double/triple fault bug which could apparently cause a hard reset. You didn't give a dmesg so it's hard to tell what you're running. Some release? Some snapshot?