Please see this debdiff[0]. Essentially, add one line to /etc/modprobe.d /alsa-base:
install snd /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && { /sbin/modprobe -Qb snd-seq ; } Then, immediately a fresh boot /without/ any modifications (e.g., using an Edgy Beta live cd), is the system freeze still reproducible on non- Creative Labs hardware lacking hardware MIDI when you start Rosegarden? For clarity: 1) Append the install.. line (above) to /etc/modprobe.d/alsa-base 2) Reboot into a pristine Dapper or Edgy environment 3) Check that snd-seq (and snd-seq-midi) is (are) loaded via ``lsmod|grep ^snd_seq'' 4) Start Rosegarden and attempt to reproduce the hard freeze Note for testing that you should /not/ start ``timidity -iA'' between steps (3) and (4)! Also note that I've never been able to trigger said freeze on my hardware (uses snd-intel8x0), even when I don't use the sequence I just described, so I'm most interested in users of non-Creative Labs hardware lacking hardware MIDI. [0] http://librarian.launchpad.net/4796837/alsa- driver_1.0.11-5ubuntu2.debdiff -- Hardlock of entire system (Dapper Flight 5) https://launchpad.net/bugs/34831 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs