Comment 20 for bug 401713

Well well, Jaunty fresh install, libata.ignore_HPA=0 in kernel, sudo apt-get install dmraid

this is what I got:

daniel@Lizzie:~$ sudo dmraid -ay
[sudo] password for daniel:
RAID set "isw_dcjdajjhfa_Volume0" already active
RAID set "isw_dcjdajjhfa_Volume1" already active
daniel@Lizzie:~$ sudo dmraid -an
daniel@Lizzie:~$ sudo dmraid -ay -ddd -vvv
WARN: locking /var/lock/dmraid/.lock
NOTICE: /dev/sdc: asr discovering
NOTICE: /dev/sdc: ddf1 discovering
NOTICE: /dev/sdc: hpt37x discovering
NOTICE: /dev/sdc: hpt45x discovering
NOTICE: /dev/sdc: isw discovering
NOTICE: /dev/sdc: isw metadata discovered
NOTICE: /dev/sdc: jmicron discovering
NOTICE: /dev/sdc: lsi discovering
NOTICE: /dev/sdc: nvidia discovering
NOTICE: /dev/sdc: pdc discovering
NOTICE: /dev/sdc: sil discovering
NOTICE: /dev/sdc: via discovering
NOTICE: /dev/sdb: asr discovering
NOTICE: /dev/sdb: ddf1 discovering
NOTICE: /dev/sdb: hpt37x discovering
NOTICE: /dev/sdb: hpt45x discovering
NOTICE: /dev/sdb: isw discovering
NOTICE: /dev/sdb: isw metadata discovered
NOTICE: /dev/sdb: jmicron discovering
NOTICE: /dev/sdb: lsi discovering
NOTICE: /dev/sdb: nvidia discovering
NOTICE: /dev/sdb: pdc discovering
NOTICE: /dev/sdb: sil discovering
NOTICE: /dev/sdb: via discovering
NOTICE: /dev/sda: asr discovering
NOTICE: /dev/sda: ddf1 discovering
NOTICE: /dev/sda: hpt37x discovering
NOTICE: /dev/sda: hpt45x discovering
NOTICE: /dev/sda: isw discovering
NOTICE: /dev/sda: jmicron discovering
NOTICE: /dev/sda: lsi discovering
NOTICE: /dev/sda: nvidia discovering
NOTICE: /dev/sda: pdc discovering
NOTICE: /dev/sda: sil discovering
NOTICE: /dev/sda: via discovering
DEBUG: _find_set: searching isw_dcjdajjhfa
DEBUG: _find_set: not found isw_dcjdajjhfa
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume0
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume0
DEBUG: _find_set: not found isw_dcjdajjhfa_Volume0
DEBUG: _find_set: not found isw_dcjdajjhfa_Volume0
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume1
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume1
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume1
DEBUG: _find_set: not found isw_dcjdajjhfa_Volume1
DEBUG: _find_set: not found isw_dcjdajjhfa_Volume1
DEBUG: _find_set: not found isw_dcjdajjhfa_Volume1
NOTICE: added /dev/sdc to RAID set "isw_dcjdajjhfa"
DEBUG: _find_set: searching isw_dcjdajjhfa
DEBUG: _find_set: found isw_dcjdajjhfa
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume0
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume0
DEBUG: _find_set: found isw_dcjdajjhfa_Volume0
DEBUG: _find_set: found isw_dcjdajjhfa_Volume0
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume1
DEBUG: _find_set: searching isw_dcjdajjhfa_Volume1
DEBUG: _find_set: found isw_dcjdajjhfa_Volume1
DEBUG: _find_set: found isw_dcjdajjhfa_Volume1
NOTICE: added /dev/sdb to RAID set "isw_dcjdajjhfa"
DEBUG: checking isw device "/dev/sdb"
DEBUG: checking isw device "/dev/sdc"
DEBUG: set status of set "isw_dcjdajjhfa_Volume0" to 16
DEBUG: checking isw device "/dev/sdb"
DEBUG: checking isw device "/dev/sdc"
DEBUG: set status of set "isw_dcjdajjhfa_Volume1" to 16
RAID set "isw_dcjdajjhfa_Volume0" was activated
RAID set "isw_dcjdajjhfa_Volume1" was activated
INFO: Activating GROUP raid set "isw_dcjdajjhfa"
NOTICE: discovering partitions on "isw_dcjdajjhfa_Volume0"
NOTICE: /dev/mapper/isw_dcjdajjhfa_Volume0: dos discovering
NOTICE: discovering partitions on "isw_dcjdajjhfa_Volume1"
NOTICE: /dev/mapper/isw_dcjdajjhfa_Volume1: dos discovering
WARN: unlocking /var/lock/dmraid/.lock
DEBUG: freeing devices of RAID set "isw_dcjdajjhfa_Volume0"
DEBUG: freeing device "isw_dcjdajjhfa_Volume0", path "/dev/sdb"
DEBUG: freeing device "isw_dcjdajjhfa_Volume0", path "/dev/sdc"
DEBUG: freeing devices of RAID set "isw_dcjdajjhfa_Volume1"
DEBUG: freeing device "isw_dcjdajjhfa_Volume1", path "/dev/sdb"
DEBUG: freeing device "isw_dcjdajjhfa_Volume1", path "/dev/sdc"
DEBUG: freeing devices of RAID set "isw_dcjdajjhfa"
DEBUG: freeing device "isw_dcjdajjhfa", path "/dev/sdb"
DEBUG: freeing device "isw_dcjdajjhfa", path "/dev/sdc"

As you can see, everything works perfectly, now Im definetly sure it is the kernel in Karmic, gonna try your version too.