Hello. I had recently moved one of my GTX 670's from one computer to another. I installed the latest drivers, and the GTX 670 was doing fine, crunching on this new computer.

However, after about half a day, it seems that BOINC declares the GPU unusable, and the GPUGRID task is suspended due to an absence of a GPU on the computer.

I tried fixing this problem by installing the drivers again and making sure to click clean install while doing so, but the problem still occurs. The only real fix is to restart, and this only fixes the problem for about a day or so.

This GPU is not running on any overclock, and the temperatures are under 70C because I set the fan to run on its max speed.

Here are the specs of the new computer:
i5-3570k @ 4.5Ghz
Windows 7, always kept updated
7200 RPM drive where BOINC is installed
16 GB of Ram at stock settings
MSI Z77A-G45 motherboard
EVGA reference GTX 670 driver is the latest one, which is 320.18 WHQL


I have never had any problems with this GPU before moving it to another computer. My reason for moving it is that sometimes I play games on the original computer and I didn't like having 2 GPU's not crunching. I felt it was wasting too much computing power.

I appreciated any suggestions, this is a problem that is really bugging me. If nothing works out, I will simply move the GPU back to the original computer. Thanks in advance.


EDIT: Here is what the Boinc Event Viewer has to say:


5/27/2013 1:45:22 PM | | No usable GPUs found

5/27/2013 1:45:22 PM | GPUGRID | Missing coprocessor for task I12R6-NATHAN_KIDc22_2-3-8-RND5491_0

5/27/2013 1:45:22 PM | GPUGRID | Missing coprocessor for task I19R6-NATHAN_dhfr36_5-22-32-RND5629_0

5/27/2013 1:45:22 PM | | GPUs have become unusable; disabling tasks

You didn't mention the PSU in you're new rig, what make and how large is it?

When BOINC says you're card is unusable, does it look like it's installed correctly in device manager? Trying to see if it's a Windows issue, BOINC issue, or hardware.

Edit: It seems TJ is having the same problem you are over here,

http://www.gpugrid.net/forum_thread.php?id=3373#30433

You might want to follow it, SK is helping him. I'm wondering if the Microsoft driver is getting installed from Windows Update, it may not uninstall when running the NVidia driver package and those drivers are notorious for not working correctly.

The PSU is the ModXStream-Pro from OCZ. It is 600W PSU and is 80 Plus. It also claims to support multiple GPU's and Nvidia Sli.

I'm pretty sure it's displayed in Device Manager correctly, it is present under Display Adapters along with the Intel HD 4000.

Also, I was unable to find any errors under the Windows Event Log and I an using the latest Boinc Manager 7.0.64.

I'm pretty sure it's displayed in Device Manager correctly, it is present under Display Adapters along with the Intel HD 4000.

Ok I set the bios option for IGD to PEG, and now I guess we wait and see if the GPU will work.

I did notice that now the Intel HD 4000 is not listed in Device Manager anymore.

Unfortunately, the problem is still here, it just happened again.

Did you try creating a cc_config.xml file and save it to you're BOINC Data Folder?

<cc_config>
<options>
<use_all_gpus>1</use_all_gpus>
</options>
</cc_config>

Paste that in note pad and save it as cc_config.xml in you're BOINC Data Folder, restart the computer. With the integrated GPU turned off you shouldn't need it but it is good to have it in there. Also, check in Programs and Features and see if a Microsoft NVidia driver snuck in there off of Windows Update. If it's there, uninstall it, restart and try a clean install of the genuine NVidia driver, try the 314.22 instead of the 320.18.

Alright, I added a cc_config file and put in that text. I checked program and features, but only found the drivers I installed from Nvidia. However, just to be safe, I reinstalled 314.22, and checked clean install in the installer.

So now, again, we wait.

Are you sure you can't use both the Intel 4000 HD and the GTX 670 at the same time? I was hoping I could use the HD 4000 for some other project.

I keep windows update on 'download but don't install' setting.

Also, the GPU is doing well so far, but like I said, it's a waiting game.

Well, it happened again! The GPU became unstable, or at least declared so by BOINC, and is no longer working on its tasks. Any new suggestions?

Is there a way I could suspend only one GPU to use for gaming while the other crunches, if I put both of them on the same computer?

Well, it happened again! The GPU became unstable, or at least declared so by BOINC, and is no longer working on its tasks. Any new suggestions?

5/27/2013 1:45:22 PM | | GPUs have become unusable; disabling tasks

Is there a way I could suspend only one GPU to use for gaming while the other crunches, if I put both of them on the same computer?

Well, here is my problem, I had been using Remote Desktop. I will stop using it, and see how the GPU does now.

It looks like not using Remote Desktop has solved my problem.

Thanks to everyone who suggested solutions.

It looks like not using Remote Desktop has solved my problem.

Thanks to everyone who suggested solutions.

fwiw the same thing happens when you use Fast User Switching in Win7
____________
XtremeSystems.org - #1 Team in GPUGrid

This is a bit off-topic now, but I just recently managed to get two 660's running GPUGRID and the Intel HD 4000 running as the display and crunching Collatz Conjecture.

I'm mentioning this because you (skgiven) said you weren't able to use both discrete and integrated GPU's at the same time.

To start off, I used the Intel driver that MSI provides for the motherboard, and not the one found on Intel's website. For whatever reason, the Intel driver didn't work for me.

I also use Bios version 2.10

I ran into a blank screen, also. I moved the VGA cable from the discrete GPU to the motherboard, where the Intel GPU started using it and the monitor came back to life.

Once I did this, I couldn't use Nvidia Control Panel and Intel's Graphics Panel appeared, therefore I assume that the integrated GPU is now the primary graphics and the Nvidia GPU's are secondary.

According to Intel, the integrated graphics support OpenCL 1.2. See this FAQ page:

http://software.intel.com/en-us/articles/intel-sdk-for-opencl-applications-frequently-asked-questions#ocl_1

I am only aware of Collatz Conjecture supported Intel GPU's, and it appears that Seti@Home is working on something.

http://setiathome.berkeley.edu/forum_thread.php?id=70717&sort_style=5&start=100

I get the same message from the Control Panel. The only problem that would arise would be that you wouldn't be able to change your Control Panel settings.

So far, crunching has gone well for me, without any problems.

Also I recently overclocked the Intel HD 4000 to 1600mhz at 1.350 volts. If you ever overclock, tell me what kind of stable clocks you reach, I'm worried because 1.350 volts is the max the bios allows you to set for GPU voltage, but no other voltage is stable at 1600mhz.