so this also affects clean install not just upgrades.
other similar bugs or duplicates:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1244312
https://bugs.launchpad.net/ubuntu/+bug/1242907
so this also affects clean install not just upgrades.
other similar bugs or duplicates:
https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1244312
https:/ /bugs.launchpad .net/ubuntu/ +bug/1242907