I've tried to grab as much state as I could. Attached is the fstab from anacoluthon, a T42 Thinkpad that suffers from this problem.
When booting, I choose the normal (i.e., non-recovery) GRUB entry, since the goal's to bring the system up. I edit the entry before booting, removing the quiet, splash, and vt handoff kernel parameters. I add the --verbose parameter so that upstart's progress is visible. The system boots partially, than hangs (see anacoluthon-boot-blocked.jpg). I then hit SysRq-i to get a prompt. I record the mount state from /proc/mounts (see anacoluthon-proc-mounts.1). I run "mountall --verbose", redirecting the output to anacoluthon-mountall.log" which runs and then hangs (anacoluthon-mountall-blocked.jpg). I interrupt the program with Ctrl-C, record the mount state (anacoluthon-proc-mounts.2). I then append a blank line to anacoluthon-mountall.log so the individual runs can be discerned. Finally, I run "mountall --verbose" again, appending the output to anacoluthon-mountall.log. The system boots fully, but some mount permissions are incorrect, such as /dev/shm, (1755 instead of 1777). The state is captured in anacoluthon-proc-mounts.3. ** Attachment added: "Anacoluthon's fstab." https://bugs.launchpad.net/ubuntu/+source/mountall/+bug/723482/+attachment/1869703/+files/fstab.anacoluthon -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/723482 Title: system hangs on boot after updates from 2011-02-22 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
