Comment # 18 on bug 1197558 from Takashi Iwai

Hm, it might be some watchdog, but it doesn't explain why it happens with the
newer kernel...

Maybe we should try kdump for capturing the crash.  Could you try to set up
kdump (e.g. via YaST)?  You likely need to give a higher RAM size than
suggested there.
After setting it up and reboot, try manually "alt-sysrq-c" combo.  This will
trigger a crash and it should result in a crash dump under /var/crash/*.
If dmesg file is found there, it's good.  Then we can try suspend/resume, and
check whether we get either a dmesg file or a vmcore there.