[Bug 86720] [radeon] Europa Universalis 4 freezing during game start (10.3.3)

https://bugs.freedesktop.org/show_bug.cgi?id=86720

--- Comment #21 from Benjamin Bellec b.bellec@gmail.com --- @Joe Glaser As said above, an easy workaround is to disable the r600 shader optimizer. Just launch Steam like this: $ R600_DEBUG=nosb steam

But performance will be not good, and you already have a weak GPU. If it's too slow, then you can try to patch and build Mesa. You can follow this tutorial: http://forums.fedora-fr.org/viewtopic.php?pid=532589 If you don't read french, you can translate the page with Google Chrome. The translation is still... understandable.