I am getting a reproduceable lockup with Prboom-Plus (Its a doom game engine)
when there is loads of monsters on screen, it seems to lock, starting with R600_HYPERZ=false negates the lock up.
Card is a Evergreen Juniper (XFX HD6770 1GB)
how to reproduce, start prboom with doom2.wad and the files and demos from here
http://www.doomworld.com/idgames/index.php?id=12597 (Deus Vault)
also you will require the non-free doom2.wad file from the game.
and play the demo with this command from inside the unzipped dir.
prboom-plus -file DV.wad -fastdemo PRBoom\ 2.2.4\ Demos/DV01-UVMAX2.lmp
at some point when the player drops down a shaft to a room with many monsters it will lock does this everytime.
OS is Mageia 3 Beta 4, with Mesa 9.1.1 Xorg 1.13.3 and kernel 3.8.3
Please check if below patch fix the issue:
Closing pushed to master and going to push to 9.1
on Jan 24, 2017 at 11:06:25.
(provided by the Example extension).