Things have changed: The magic sysrq keys now work when the system freezes! I can now reboot with REISUB. Any ideas how I can take advantage of the sysrq keys to unfreeze the system or at least get more debugging info?
I removed almost all *gnome* packages. Don't know if it has anything to do with it. Maybe I should do more tests with Ubuntu Gnome or Windows to see if it happens there as well (hasn't been the case so far). I also opened the PC to have a look at the connections. They seem to be OK. The motherboard is a GIGABYTE GA-MA74GM-S2H. The front USB ports are connected over some 9-pin connectors. I'm adding some screenshots of the system. I noticed that there were only 2 connectors on the motherboard for the 4 front USB ports (which all work when the system does not freeze) and they were on the "F_USB ports" 3 and 4, while 1 and 2 were empty. Does this matter? ** Attachment added: "motherboard and pc screenshots" http://launchpadlibrarian.net/42153077/PC.tar.gz -- kernel lockup when plugging in USB stick https://bugs.launchpad.net/bugs/514485 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
