Black render output - possible video driver corruption...

[plusvisual]

Hey guys,

TL:DR + Specs below

In a bit of a bind here. I woke up this morning to find that my batch render failed to complete but saved one image (jpeg) but it was completely black (not a corona settings issue, I'm 99.9% certain of this). Kind of a bummer to see the black image on my dropbox app on my phone, so I get up and check my computer... Monitor says no input detected (computer is on, plugged in, no change from last night) great. Reboot, post screen shows up, windows load screen completes, windows chimes, black screen. First thought was a hardware problem so I tried the card in another computer (exact same build) and it's fine. Leads me to believe it's a driver issue since it showed the post screen, and windows booted up but no video.

My concern is why Corona saved the black image? Does Corona use CUDA image compression by chance? Other than settings, why would Corona save a completely black image?

TL:DR:

Video card driver failure (likely)
Corona saved output (jpeg) as BLACK (autosave - 99.9% not a settings issue)
Is this possibly video related?
Does Corona use a CUDA image compressor?

Specs:

Windows 10 pro
Asus GTX970
5820k
64gb ram
SSD+HDD (os+data)

Any info is greatly appreciated!

Ryan.

[mferster]

It sounds like you have two separate issues to me. I'm pretty sure your black screen issue is not related to your black render output.

Not sure what caused the black render... but as for your hardware issue... Did you recently buy a new monitor?

If not...
Since it's displaying the post screen and windows loading, if you boot up in safe mode it should work. Then just reinstall your gpu drivers.

[plusvisual]

Thanks for the reply mferster.

I think they may be separate issues but connected in some way that cause a failure during save.

Nothing has changed recently in my setup. I have a feeling the display issue is a driver problem since the card worked in my other machine. I even have Windows updates set to defer... weird! I've never had a driver randomly corrupt itself like that, but display drivers are always a tricky beast.

There are some cuda image compressors out there so I was wondering if it was related that way.