I have this happening with Xubuntu 13.10 on my ASUS Sabertooth 990FX.
It doesn't happen on Ubuntu 14.04's installation disc.
I'm not 100% certain if it also happens on Ubuntu 13.04.
However, I also cannot get my Sabertooth 990FX to boot into either Ubuntu 13.10 or Ubuntu 14.04 because of this bug: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1250321
I have this happening with Xubuntu 13.10 on my ASUS Sabertooth 990FX. /bugs.launchpad .net/ubuntu/ +source/ linux-firmware/ +bug/1250321
It doesn't happen on Ubuntu 14.04's installation disc.
I'm not 100% certain if it also happens on Ubuntu 13.04.
However, I also cannot get my Sabertooth 990FX to boot into either Ubuntu 13.10 or Ubuntu 14.04 because of this bug: https:/