Comment 147 for bug 1080701

For my machine, I checked dmesg and saw the raid6_pq module had crashed, and its modprobe process was hanging unkillable (presumably what locks up the installer).

I'd guess that ubiquity is loading this module, and it crashes when it encounters something in the partitions it doesn't like, probably involving block sizes or alignment - I wasn't using RAID, but I was using a USB-SATA adaptor with a GPT disk label.

My successful workaround was to, in the live filesystem, delete/move the raid6_pq.ko module file and then run the installer.

I'll add more details later, when I have access to the machine.