I'm really glad to hear that most cases are not having an issue, though. It's such an odd issue to have; it's like the matrix transforms at the GPU level are just completely off. So that does make me wonder about the driver.
At this point I think we're good on testing this, because if it is a drivers issue that needs to be sorted out separately. If it's a linux flavor issue, that's also not really something I can do anything about. Frankly aside from tech support "have you tried this" sort of stuff, I'm not sure there's much I can do at this point. Given this seems isolated, we can deal with this if it does come up as a larger issue.
The sample size here is small, but it's the same engine we've used in like 7 other games with plenty healthy linux populations, so this seemed an odd thing to happen. Just in case it is a shader thing with the two types of shaders that are particularly new with this game only, I put in ways to turn those off. So that may help as a workaround in case it's like a really old shader model incompatibility or something (it only requires shader model 3.0, which is circa 2004 or something like that).
