Hey,

My computer's been randomly dropping into monitor only sleep mode these 1-2 weeks.

I've isolated the problem to Boinc's seti@home gpu usage. I'm suspended GPU usage for a few days days now and The above hasn't happened.

Running a gtx 1070 w/ driver version 388.0 , windows 10 64 1709, build 16299.19.

Anybody else getting similar issues?

BOINC doesn't use your GPU. A project's GPU science application uses your GPU, so questions like these are best asked at the project.
I see that you have already done so, and by checking your system(s) there, I can't find any in your list of computers that have a GTX 1070, only a GTX 770.
It looks like your old hostID was discontinued and a new one made, so you have all new work for it. But that system hasn't been running any work on the GPU either since the 28th of October.

Now, in Windows Power Options you can set to not turn off the monitor, have you tried that already?

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I see, thanks for confirming that it's the project issue, not boinc's issue

typo - it's a gtx 770

Yes, that was when I specifically suspended gpu work, and when the problems stopped.

Nothing to do with power options. Because 1. that has always been its setting and 2. If it were the case, you'd still be able to wake the monitors up. This Isn't the case here though, and it does it even when you're active on the computer.

Sigh. 1 of the power cables leading to the GPU was loose

XD