Hi!
I have installed NVidia display driver and the kernel module seems to
load well, but the framerate of opengl apps is really poor (<20fps
running glxgears in fullscreen). I have done it many times and it
always worked fine, but now I changed linux distribution to Slackware.
I have already tried the most recent display drivers from nvidia site
as well as the older ones which used to work fine for me (hardware the
same).

I think it is worth mentioning that when I run vmware workstation and
try to switch to fullscreen mode, it says:
*Unable to turn on direct graphics.
*Failed to switch to full screen SVGA mode.

So maybe the problem is with kernel configuration? If so shall I
rebuild it and what options should I enable? Or maybe there is another
way to fix that?

Thx in advance!


btw. I invoked few commands to provide more information:

$ ldd /usr/X11R6/bin/gears
libGL.so.1 => /usr/lib/libGL.so.1 (0x40030000)
libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x400b4000)
libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x400c2000)
libpthread.so.0 => /lib/libpthread.so.0 (0x4018c000)
libm.so.6 => /lib/libm.so.6 (0x401dd000)
libc.so.6 => /lib/libc.so.6 (0x40200000)
libGLcore.so.1 => /usr/lib/libGLcore.so.1 (0x40319000)
libnvidia-tls.so.1 => /usr/lib/tls/libnvidia-tls.so.1 (0x40ad7000)
libdl.so.2 => /lib/libdl.so.2 (0x40ad9000)
/lib/ld-linux.so.2 (0x40000000)

$ lsmod | grep nv
nvidia 3783276 6

$ uname -mr
2.4.31 i686

--
golem

golem wrote:
> I have installed NVidia display driver and the kernel module seems to
> load well, but the framerate of opengl apps is really poor (<20fps
> running glxgears in fullscreen). I have done it many times and it
> always worked fine, but now I changed linux distribution to Slackware.
> I have already tried the most recent display drivers from nvidia site
> as well as the older ones which used to work fine for me (hardware the
> same).
Have you loaded the "glx" X module? Could you please post the output of the
'glxinfo' command? Even if the kernel module is loaded, you may still be
using the software rendering libraries. glxinfo can tell you if that is the
case.

Reinier

I think this may be also important:

$ dmesg | grep AGP

AGP: Found AGPv3 capable device at 0:0:0
AGP: Version 2 AGP device found.
AGP: Only 1 devices found, not enough, trying AGPv2
AGP: Found AGPv3 capable device at 0:0:0
AGP: Version 2 AGP device found.
AGP: Only 1 devices found, not enough, trying AGPv2

--
golem

I remember reading that u needed to changexorg.conf or some similar file to
use GLX

first check the obvious: you are actually loading the module (lsmo
should list "nvidia" if you are) and you have told xorg t
use it (Driver "nvidia" in xorg.conf). if these are ok the
you're using the driver, so the lack of speed is probably agp related
typ
ca
/proc/driver/nvidia/agp/statu
to see what's going on

ideally it should look something like
[code:1:925f83e295]Status: Enable
Driver: NVIDI
AGP Rate: 8
Fast Writes: Enable
SBA: Enabled[/code:1:925f83e295
if the agp stuff isn't working, you just need to ensure the kernel ag
setup matches what you've told xorg you're using. so, if you go t
/usr/src/linux and type
[code:1:925f83e295]grep AGP .config[/code:1:925f83e295
you probably ought to see CONFIG_AGP_NVIDIA=y with all the other ag
options "not set". in any case, that's how i built m
kernel and it works with my nvidia card...you may need to do i
differently on your hardware

if you do have the kernel set to nvidia agp, then you need
[code:1:925f83e295]Option "NvAGP
"1"[/code:1:925f83e295
in the device section of your xorg.conf (somewhere just under th
Driver "nvidia" line). all this is documented in the drive
readme

finally, to get the fast writes and sba working you should only hav
to ad
[code:1:925f83e295]options nvidia NVreg_EnableAGPSBA=
NVreg_EnableAGPFW=1[/code:1:925f83e295
to /etc/modules.conf, however i found that i had to edit the sourc
code of the driver to enable these options. if you run the drive
with the -x option it extracts itself without building and installin
the kernel module. somewhere in the source tree (unde
NVIDIA-Linux-foo/usr/src/nv) you'll find a file called os-registry.
and if you browse this you'll find the places where these options ar
set to 0...set them to 1, jump up three directory levels and ru
"nvidia-installer" and you'll have full-speed nvidia gfx

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