Hangs in "Started Update UTMP..."

Hi,

Some weeks ago I update to OpenSUSE Tumbleweed the laptop of my brother. Four days ago he received a notification about available updates and then select Reboot and install updates. After that the system hangs in “Started Update UTMP about System Runlevel Changes.”. See image. I was able to enter the system with the rescue option at DVD. But I don’t know how solve the problem. Goggling I found the problem could be driver of the graphical device. But no idea how check it or change it. Any advice? Thanks.

https://b2aeaa58a57a200320db-8b65b95250e902c437b256b5abf3eac7.ssl.cf5.rackcdn.com/media_entries/14904/opensuse.jpg

I reinstall tumbleweed again. I hope this will not happen again when install updates.