Yes, this is quite annoying.
I recall I upgraded Ubuntu and rebooted only to encounter this hang.
I can't even boot up some of the live CDs (Ubuntu, Linux Mint, ...) without bypassing nouveau.
I've switched back to the proprietary driver and everything is fine.
But we need to get to the bottom of this.
Yes, this is quite annoying.
I recall I upgraded Ubuntu and rebooted only to encounter this hang.
I can't even boot up some of the live CDs (Ubuntu, Linux Mint, ...) without bypassing nouveau.
I've switched back to the proprietary driver and everything is fine.
But we need to get to the bottom of this.