Screen loses signal when CPU is under load at stock speed

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caliminity

Aug 9, 2018
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I built a new computer a few weeks ago and I recently started rendering a files with blender using all 12 threads. After a few minutes, the screen receives no signal and once the signal returns a few minutes later, I see that blender has crashed. Normally, I think this means the overclock is unstable, but for this computer I am running everything at stock speeds and did not change any settings in the BIOS.

This issue only seems to occur when the CPU is under load and other programs like games run smoothly. Additionally, temperature does not seem to be the problem since everything runs below 70 degrees celsius. So far, I have tried installing the chipset driver, reinstalling the GPU driver and disabling Turbo Boost. Important specs:

  • i7-8700K at stock speeds
    16 GB Corsair Vengeance LPX at 2133 MHz
    Gigabyte GTX 1080 Ti
    EVGA SuperNOVA G3 850W 80+ Gold
 
Solution
O
Have you looked in Event Viewer to see why Blender crashed?

Fairly recently with some renders mine has crashed, and others I know have as well. Supposedly it's an OpenGL driver crash (which makes no sense as I render on the CPU).

Additionally for me the PC can go to sleep during a render. For some reason having all threads of a CPU working on a render, Windows still sees the PC as being inactive and goes to sleep. I have to use WMP to run through a playlist so the PC doesn't go to sleep.

Further, I try not to use all threads of the CPU to render, and this seems to get around the OpenGL driver crash. At least Blender crashes less often.
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Obakasama

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Apr 30, 2014
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Have you looked in Event Viewer to see why Blender crashed?

Fairly recently with some renders mine has crashed, and others I know have as well. Supposedly it's an OpenGL driver crash (which makes no sense as I render on the CPU).

Additionally for me the PC can go to sleep during a render. For some reason having all threads of a CPU working on a render, Windows still sees the PC as being inactive and goes to sleep. I have to use WMP to run through a playlist so the PC doesn't go to sleep.

Further, I try not to use all threads of the CPU to render, and this seems to get around the OpenGL driver crash. At least Blender crashes less often.
 
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