I did not yet try the SysRq Key Combination, but here is what seems to a workaround for me.
I have the following HD Layout: NTFS (with windows installed) - ext4 root partition - swap partition - ext4 home - ext4 opt. My fstab looks like this: # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 # / was on /dev/sda5 during installation UUID=6b16985d-05da-4660-9760-2b5aa1175d30 / ext4 errors=remount-ro 0 1 # /home was on /dev/sda6 during installation UUID=1db33369-f427-4398-bb61-d54e802aefa1 /home ext4 defaults 0 2 # /opt was on /dev/sda7 during installation UUID=14f0cce9-3257-4c01-8d3e-9f88aa92babe /opt ext4 defaults 0 2 # swap was on /dev/sda8 during installation UUID=bafbe7fa-d571-42bc-91c1-e45c1a12ae20 none swap sw 0 0 Interestingly, if i change it to the following, ubuntu boots: # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc defaults 0 0 # / was on /dev/sda5 during installation UUID=6b16985d-05da-4660-9760-2b5aa1175d30 / ext4 errors=remount-ro 0 1 # /home was on /dev/sda6 during installation UUID=1db33369-f427-4398-bb61-d54e802aefa1 /home ext4 defaults 0 2 # /opt was on /dev/sda7 during installation UUID=14f0cce9-3257-4c01-8d3e-9f88aa92babe /opt ext4 defaults,nobootwait 0 0 #UUID=14f0cce9-3257-4c01-8d3e-9f88aa92babe /opt ext4 defaults 0 2 # swap was on /dev/sda8 during installation UUID=bafbe7fa-d571-42bc-91c1-e45c1a12ae20 none swap sw 0 0 The difference is that use the "nobootwait" option for my /opt partition and set "pass" to 0 instead of 2 for the same. I hope this may help you with fixing this bug. -- System fails to boot with plymouth installed (ATI driver) https://bugs.launchpad.net/bugs/540706 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs