Help! Steam isn't launching!

[Ian Brandon Anderson]

I'm using Ubuntu 16.04.1 LTS (Yakety Yak) (Kernel 4.4.0-57-generic). I already set it up and it sorta worked, I have AMD64 Radeon. When I click on the icon, it flashes for a few seconds and then does completely nothing. Someone help I am getting salty.

[Freyja]

Open your terminal, type: steam


After that, put the output here

[Ian Brandon Anderson]

Początkowo opublikowane przez Companion Cube <3:

Open your terminal, type: steam


After that, put the output here

Running Steam on ubuntu 16.04 64-bit
STEAM_RUNTIME is enabled automatically
[2016-12-30 14:04:59] Startup - updater built Dec 20 2016 05:49:54
SteamUpdateUI: An X Error occurred
X Error of failed request: BadValue (integer parameter out of range for operation)

[havelcøde]

Have you selected the proprietary driver for your GPU in Settings > Software & Updates > Additional Drivers?

[Freyja]

I dont know how to help anyone xD i just know what to say to help the helpers a bit further