nVidia Quadro NVS 295, openSUSE 11.4 (KDE 4.7) slow graphics

Hi all,

I have an Intel Core i7 860, 8 GB RAM, with nVidia Quadro NVS 295 graphics card running openSUSE 11.4 with KDE 4.7. Moving, resizing, and minimizing windows, opening the starter menu is sluggish, choppy. It’s not that I cannot live with it, but it should be smooth, and that’s what bothering me. It seems like I have tried “everything” to fix the problem, disabling the blur effect, the pixmap trick, changing nVidia driver (both the latest beta 285.03, the latest stable 280.13, and the one from the repository, 275.21), and enabling and disabling the things on the “Advanced” tab for desktop effects. Changing from the Oxygen theme to something else improved it a bit, but it is still very choppy.

It seems related to the number of windows I have open. If I have one window open, everything flows nicely, but already with two windows it becomes slow.

I have a dual screen (TwinView) setup, but removing the second screen did not improve anything.

I’m not very good at the graphics part, so any help is very much appreciated. I can’t stand all the comments about “sluggish Linux graphics” I get from MS Windows users :slight_smile:



These are the top lines I get from glxinfo:

name of display: :0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4

Hi i have this issue too

i have nvidia driver 280 and twinview activate it’s very very slow in desktop effect!

There are a couple of threads on different nVidia driver hiiccups

ONE: Poor proprietary nvidia driver performance - nouveau & screen blanking where the proposed solution was to:

  • blacklist nouveau
  • build NVIDIA driver (275) the manual way (also called hard way (which is not hard))
  • with nvidia-setting, saved a new xorg.conf file
  • added Option “DPI” “96 x 96” in the device section
  • change the rendering from OpenGL to XRender

ANOTHER: GARBLED DISPLAY with NVIDIA 11.4 killed my graphics?
This bug is relating to a garbled or distorted display (of X windows) when using an NVIDIA graphics chipset and the nouveau driver. That thread says you can tell if this bug affects you simply by running the live CD.

A workaround, from the bug report, is to put the following two parameters -

Option "NoAccel" "on"
Option "ShadowFB" "on"

In /etc/X11/xorg.conf.d/50-device.conf (in the “Device” section) and then restart xdm.

I have encountered neither problem, so I do not know enough to answer any questions on the above. I just point to those two links in an effort to help.

Thank you very much for taking the time to help me.

Unfortunately, the problems described do not match my problem, and the tricks in the threads did not make any difference. Everything works fine, except it is sluggish with more than one window open (it gets worse the more windows I have open).

Removing the second monitor (turning off Twinview) does not make any difference.

Is it just that the drivers work bad with kwin? I love KDE, so I wouldn’t like to switch. I tried nouveau, but the desktop effects did not work so I gave up.