.:Fru::Atomic-ant Dec 12, 2012 @ 8:51pm
nvidia-xconfig --composite and --sli 'options' question.
Hi, I was wondering what is the purpose/definition of the 'composite' X extension in the nvidia settings and what --allow-glx-with-composite, --no-allow-glx-with-composite do?

Alternatively I was also looking for some explanation about the --sli=Values: 'Off', 'On', 'Auto', 'AFR', 'SFR', 'AA', 'AFRofAA', 'Mosaic'. It seems like I couldn't find any...
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Kano Dec 12, 2012 @ 10:45pm 
Usually you don't need any composite settings, even when you want to disable it it is usually enough to do that in the desktop environment, like when you use KDE 4 press ALT+SHIFT+F12. I could never test SLI due to missing cards myself, maybe just try Auto first. For multigpu cards you need the multigpu option not the sli one - like for gtx 690.
Last edited by Kano; Dec 12, 2012 @ 10:45pm
.:Fru::Atomic-ant Dec 13, 2012 @ 5:22pm 
I'm running this in ubuntu 12.10 with unity3d - aka compiz, so I need that value to be on to make it work, well after reading a bit and doing alot of testing I can say that for now --sli-ARF seems to be one of the only mode that does a real job, but yet you have to work around some other problems to have TF2 run correctly (at least for me) while in this mode. (in window mode it runs like a charm but seems to have trouble in full screen while ARF is enabled, with or without compiz unredirect option.) :: I found a way to work around this that seem to work until you alt-tab out and everything screws up everytime :D

All in all it seems that keeping --sli to 'nothing' for now is the best solution for me on 3.5 kernel and Ubuntu 12.10, --composite is on by default. there is so much more to check tho but I lost patience when after trying alot of different config I shutted down X and pam started to freak out... :(
.:Fru::Atomic-ant Dec 13, 2012 @ 5:24pm 
but in some of the test, I managed to have somewhat better performance with --sli=AFR and some other options..... but I had to do some 'nono want to do that everytime' strange operation to make it worth it.
John Dec 13, 2012 @ 7:10pm 
The NVIDIA driver readme file has some specifics about the various SLI modes, but I think you need actual SLI game profiles to take advantage of SLI.

See here: https://devtalk.nvidia.com/default/topic/524430/linux/horrible-performance-with-dual-sli-on-2x-evga-560-ti-ubuntu-12-10-cinnamon-310-14-/
.:Fru::Atomic-ant Dec 13, 2012 @ 8:46pm 
oh well that is something I though about, but all in all after all those test I manage to screw up the sound and I can't get it working again ! :) that bugs me....
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