GPU not in use?

Operating Systems & Open Source Linux
1

So i've been using fedora for about a month now, so i'm not a COMPLETE NOOB (pretty close though).

Anyways, when playing minecraft I get around 60 fps and less no matter the settings (java version: 1.7.0:51 openJDK) in fedora 20. The reason i don't think my gpu is doing much no matter what I do is because 1: it doesn't get very hot (stays about the same temp while play minecraft and while just doing nothing (placed hand over exhaust fan)) and 2) the fan never changes speed. 

My Gpu: Evga GTX 650 1GB (overclocked on windows (different hdd))

On windows I can get from around 60 fps all the way to 200 fps. 

I'm not sure what to do. 

If anyone can help me get more fps from mincraft that would be great because 30 fps and less is terribly annoying and I really like fedora. 

Edit1: Ran folding@home while playing minecraft, the fps did not change, but F@H is working.

2

Is VSync on in the video settings in Minecraft? That could be throttling your FPS.

3

It was on, I turned it off, the fps didn't change.  

4

bump?

5

Try another game. If the GPU is being used properly you can blame minecraft for being a shitty piece of software (you should do that anyway but whatever).

6

When I play FTB (over 120+ mods installed onto mine craft) I get basically the same fps. Aside from FTB and Minecraft i have no other games installed onto my fedora HDD. Also, when I tried installing optifine onto minecraft, it only lasts less than 10 seconds before my whole computer freezes up.

I really don't understand. I've done basically all the same things I've been doing on Linux Mint and no problems. 

7

then you probably have the nouveau mesa drivers installed. it doesn't reclock and stays on the same low frequency. consult your distribution's manual on how to install the nvidia proprietary driver if you haven't already.

8

Go into your proprietary driver config, and tell the system not to limit the fps to the refresh frequency of the monitor. In linux, it's often preconfigured so that the GPU doesn't have to work harder than needed to provide the fps that the monitor can display. If your monitor has a 60 HZ refresh, that's all the GPU will deliver to free up GPU power for OpenCL and other acceleration technologies. You can easily set this otherwise.

Other possibility: If your cable is a DVI cable, above certain resolutions, you wont be able to get above a certain refresh rate if you have a single DVI cable. To get more, you need to use a dual DVI cable.