~20 FPS in UT2k4 demo with 3d acceleration and a 9600 pro

Under Windows the same demo runs at a nice speed, over 60FPS. Under GNU/Linux it's around 20FPS. I have 3d acceleration enabled, 1.5GHZ Pentium M (equiv to 2.4GHZ P4) 9600 pro 128MB and 256MB PC2700.

Also while running glxgears it's capped at 60FPS. I believe it's capped at this because I told it not to go past my VSYNC (60) while setting up fglrxconfig, is this the case?

Anyone know why either of my FPS are so slow?

What are you using for the video driver? I have Slackware 9.1 and I get frame rates about 60/sec on UT2004. I am using the latest ATI 3D drivers for linux (version 3.7.6) that can be downloaded from www.ati.com.

Please also state your distribution. Some distros add a directory named tls to /usr/X11R6/lib, which contain another libGL.so.1.2 file (and symlink) besides the one(s) installed by the ATi driver. You may want to disable your vsync either via fglrx or by changing the line:

# === OpenGL specific profiles/settings ===
	Option	    "Capabilities" "0x00000800"

To

# === OpenGL specific profiles/settings ===
	Option	    "Capabilities" "0x00000000"

That should disable vsync. Remember to re-start X when you edit the file, so the changes take effect.

Are you using the latest drivers from ATi?? It happened the same to my Radeon 9500 Pro....With drivers 3.7.0 i got arround 2100fps on glxgears, but arround 50fps with 3.7.6.
Maybe you should consider downgrade to 3.7.0, at least it worked for me.

Hope it helps

I'm using the 3.7.0 drivers. I'll try the new ones later tonight and let you know how it went...

Originally posted by Thetargos Please also state your distribution. Some distros add a directory named tls to /usr/X11R6/lib, which contain another libGL.so.1.2 file (and symlink) besides the one(s) installed by the ATi driver. You may want to disable your vsync either via fglrx or by changing the line: # === OpenGL specific profiles/settings === Option "Capabilities" "0x00000800" To # === OpenGL specific profiles/settings === Option "Capabilities" "0x00000000" That should disable vsync. Remember to re-start X when you edit the file, so the changes take effect.

My Distro is slackware 9.1. There isn't a directory called tls there, so I guess my distro doesn't symlink to another libGL.so.1.2 file.

If I change my VSYNC to off, won't it causing "tearing" on my LCD? Also to turn it off I edit the XF86Config-4 file, right?

Originally posted by sharpie I'm using the 3.7.0 drivers. I'll try the new ones later tonight and let you know how it went... My Distro is slackware 9.1. There isn't a directory called tls there, so I guess my distro doesn't symlink to another libGL.so.1.2 file. If I change my VSYNC to off, won't it causing "tearing" on my LCD? Also to turn it off I edit the XF86Config-4 file, right?

Yes to both questions. However tearing is only apreciable in some specific conditions, and is not an exclusive issue on LCD's (CRTs also do that).

I was under the impression that tearing could possibly cause long term damage, but I did some searching and found out I was misinformed.

Now I'm getting 2257FPS in glxgears, and 424FPS in fgl_glxgears. That seems to be decent, so is something wrong with the setup of UT2k4 itself?

Edit: I'm still using 3.7.0 btw...

Ok, for some reason I'm under the impression you should get better performance in UT2K4, I just installed 3.7.0 for a test whirl (I usually use only 3.2.8) and in fact they perform like crap. Since I don't have yet the full version of the game, I did the test with the demo. According to Ryan Gordon (you know, the one who made the port?) they did a some changes to the final renderer, but still in my computer I noticed a drop of about ~20 fps with these drivers. Since I use the demo I used the CTF map to test (since it's the map I play the most with the demo). Also with a scripted benchmark of the same map there's a consistent ~15 fps loss compared to the 3.2.8 drivers.

However the 3.28 drivers have issues of their own. Like artifacts (lots of 'em) in some maps (especially true for the suntemple map in UT2K3), and some other minor issues. If you do want to downgrade bear in mind that you'll lose performance in fgl_glxgears, there are some crashes associated with the driver in certain driver/HW combos (mine does not do that, thankfully).

Thanks for taking the time to try out the 3.7.0s.

I tried again and the FPS is now at about 30, this isn't as good as under Windows, but it's playable. I'll try a different game when I get a chance, and if the performance is still lackluster I'll try the 3.2.8s, or 3.7.6s.