Hi! My old Lenovo ThinkPad T61 laptop reboots by itself from time to time. Usually without a clue, but this time I was able to capture the stack trace: http://people.eisenbits.com/~stf/load/20151222-kernel-stack-trace.png .
How to debug it? I've installed linux-image-3.16.0-4-amd64-dbg package: https://packages.debian.org/jessie/linux-image-3.16.0-4-amd64 , now is /usr/lib/debug/vmlinux-3.16.0-4-amd64 the vmlinux file matching my kernel version? What does "ckt20" stand for? For now I just wanted to follow the stack trace, eg. with addr2line. Sometimes it prints out some source code address but usually just "??:0". Why? Perhaps this is a hardware error, but where? Is this the graphic card? Or the south bridge maybe? Is this patchable? Thanks! This is the latest Debian Jessie. -- http://people.eisenbits.com/~stf/ http://www.eisenbits.com/ OpenPGP: 9EC2 5620 2355 B1DC 4A8F 8C79 0EC7 C214 E5AE 3B4E