Comment 23 for bug 365885

Well, on my system, the Nvidia 185-driver doesn't solve aything. I'm running an AMD64 dual core system with Nvidia 6600 256 MB graphics card. Did a whole bunch of tweaks I found here and there:
- disabled SLI in Xorg.conf
- installed and activated irqbalance
- set irq settings to manual in the BIOS, since my graphics card shared an irq with my 2nd sound card (so this isn't the case anymore)
- uninstalled compiz, as far as possible. I need to find how to disable compositing at all still, I guess it's Xorg.conf
- created an /etc/modprobe.d/nvidia file with the following line: options nvidia NVreg_RegistryDwords="PerfLevelSrc=0x2222"
- added boot option clocksource=hpet and made sure hpet is enabled in the BIOS
- tried several screen resolutions, the nv driver, Debian Lenny, Gnome instead of KDE
- same problem with my previous system, which was a Nvidia motherboard with AMD64 single core

Maybe it's something with Xorg after all, perhaps the xrender library?

Anyway, as far as I'm concerned, it's not solved at all.