I'm suffering from the same bug unter Ubuntu 9.10. The problem can be
solved by adding a sleep timer of 20-60s (depends how fast the system is
booted) the file "/usr/lib/pm-utils/power.d/95hdparm-apm" before the
"hdparm"-command :
then
level=$(hdparm_apm_option_for_disk $dev)
if [ -n "$level" ]; then
sleep 20 # Prevents harddisk from
reseting
hdparm -B $level $dev
fi
"hdparm" is executed twice in a very short time (1s) during the boot and both
commands are called when the boot process do the most I/O on the harddisk.
Heavy I/O and setting a firmware command twice in a very short time does not
work very well, so the harddisk is reseted by the kernel.
Adding the sleep timer prevents this and "hdparm" will be executed after
the heavy I/O-throughput, for example when the login manager appears and
is waiting for the login.
For my notebook a 20s timer works perfectly, but 60s seems to be a
better value because most desktop-systems will be completely booted
after 60s and have no more heavy harddisk I/O.
--
update to 0.114-0intrepid2 makes system hang for 30 seconds while booting
https://bugs.launchpad.net/bugs/321219
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