As the Half-Life 2 Beta finally arrived for linux I thought I open a bug thread, so we can report everthing that should be fixed sooner or later.
Don't forget to include your system specs if you post issues.
my pc's specs:
AMD Phenom II X4 955(3.2GHz)
2x 4GB DDR3-1333(7-7-7-20) G.Skill RAM
ASUS EAH5870(AMD HD5870, 1GB VRAM)
Xorg 1.13(thanks AMD!)
Anyways, the game works mostly well and also the performance is good most the time. Sometimes at certain places the fps fall down to 40fps though. Also there is some periodic stutter, it runs smooth and every few seconds it freezes for a few milliseconds(the sound also freezes).
I also noticed some graphical glitches, like some objects having corrupt textures when on the edge of the screen not always and kinda hard to reproduce.
Also some particle effects seem to have coloring issues as well as texture corruption, for example when barney throws you the crowbar and the scanners are flying out of the citadel, some of them just show up as grey rectangles.
EDIT: particle color corruption: http://steamcommunity.com/sharedfiles/filedetails/?id=144196372
Also noticed that normal mapping seems to cause some stron moire effect: http://steamcommunity.com/sharedfiles/filedetails/?id=144196402