Well I can see I'm in good company here. My system76 Pangolin began throwing 'exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen' in the log, followed by a 'soft resetting port' message a few weeks ago. This last upgrade appears to have made the problem worse
** Attachment added: "syslog" http://librarian.launchpad.net/7093882/syslog -- Hard disk I/O randomly freezes when hald is running and optical drive is empty https://launchpad.net/bugs/84603 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs