Sudden jumps when turning around

[Zygfryd]

When using the non-SDL version of Nexuiz 2.0 and turning around fluently with the mouse the view suddenly jumps a couple degrees in the direction of turning. Seems to always happen at similar facing directions and is constant, ie. it's impossible to turn around without this effect happening. Seems to happen more often at higher detail levels, but it's not caused by a low framerate. At higher detail levels pointer jumping can also be seen in the menu.
Everything works fine with the SDL version.
Platform: Linux x86, Xorg 7.0, Nvidia official drivers, old mouse driver (not evdev), three different mice.

[KadaverJack]

Does the problem persist with 2.1?

[Zygfryd]

Don't know, not in portage yet, was there any relevant change made?

[divVerent]

Not that I know of, but maybe. The bug is not known.

Can you try setting gl_finish 0?

[Daedalus]

Don't know, not in portage yet, was there any relevant change made?

why does it have to be in portage ? you can download it here http://www.alientrap.org/nexuiz/?module=downloads. just extract and run it

[esteel]

Not that I know of, but maybe. The bug is not known.
Can you try setting gl_finish 0?

gl_finish should be 0 by default. I think you mean 1

[Zygfryd]

gl_finish makes no difference. I downloaded the official builds and they both (2.0 and 2.1) work flawlessly. The problem only happens in the gentoo build.

[esteel]

Maybe they 'over-optimized' Nexuiz

[divVerent]

Just out of interest... can you quote a "gcc" line when building the ebuild so I see the exact CFLAGS being used? Like, the line with "vid_glx.c" in it?

[esteel]

I remember someone making a joke about gentoo to reenable a certain option that was removed to make Nexuiz compile/work with gcc 4.1 on 64bit machines. That did not happen but they broke it nevertheless. Thats kinda funny.