On 11/10/2011 16:10, Dazed_75 wrote:

Try looking to see if you are using the open source generic nvidia driver or the proprietary one. I am not sure where that is in the Kubuntu menus but look for something in System, or Administration with a name that is probably something about Hardware. It should run a program that looks to see if there are proprietary drivers you might choose to use.

When I first installed the os I noticed the problem with the driver it came with. I checked and found where it suggested a proprietary driver and offered one other. I chose the one that was recommended. The bug showed itself with the driver that came with the install and the one I installed later.

I AM curious though if you have some particular reason for suspecting it is due to you having that video card since a screen freeze could be something above the driver level.

I've had that card for about 2 years while the machine was running XP and didn't have this problem. It only showed itself after I installed the latest Ubuntu and Kubuntu version as well as the other latest linux flavors I mentioned earlier. Fedora 15 was the worst. It would freeze the screen as soon as I started playing a video. The others would let me watch at least for a few minutes before the screen froze.

Also if it's not a driver problem, what else could it be?

On Thu, Nov 10, 2011 at 3:59 PM, Derek Trotter <expat.arizonan@gmail.com> wrote:

I have an NVIDIA Geforce 8400 GS card that plugs into a PCI slot. I have no problems with it in XP, but when I installed Kubuntu 11.10 I found a problem. Occasionally the screen freezes. I can't switch to a console. Also I can't kill the x server. I know the machine has not completely locked up because when I have audio playing, it keeps playing even though the screen has frozen. None of the usual means to shut down a machine work. The only thing I can do is hit the reset button, press the power switch for several seconds until the machine shuts off, or pull the plug. I've encountered this on Ubuntu 11.10, Kubuntu 11.10, Mepis 11 and Fedora 15. I installed the LTS verson of Kubuntu 10 and haven't had any problems with it. Does anyone have any idea what's going on or how to fix it?

Thanks
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Dazed_75 a.k.a. Larry

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