Hello @madscientist159, steam picked up a couple more dependencies in the beta client.
You should be able to run something like sudo apt-get install libva1:i386 libvdpau1:i386 in a terminal to get these dependencies.
Hello @madscientist159, are you still experiencing this issue on an up to date system?
Closing as out of date. If you encounter a similar issue, it'll need a new investigation.
Nothing extracted yet.
Your system information
Nov 22 2017 13:33:24
Ubuntu Trusty
Yes
Yes
Steam no longer loads. Attempting to start Steam results in an error about failing to load steamui.so, and the following message appears on the terminal:
/home/games/.local/share/Steam/ubuntu12_32/libavutil.so.55: undefined symbol: vaQuerySurfaceAttributes