NVidia driver 546.17 - no preview with GPU acceleration on

Ian_S wrote on 11/26/2023, 11:15 AM

Hi. Is anyone else experiencing the same thing? I got a message saying my GPU had encountered problems and to confirm my driver was up to date. It wasn't (I believe it was on 537.38) so I updated it to the latest 546.01 (Studio). Now the preview window is black when I turn GPU acceleration on. Turning it off and restarting Vegas (v21 build 187) solves the issue and it's repeatable. No difference when bypassing fx.

What's the recommendation for the latest usable Nvidia drivers with Vegas please? I read through a thread that referred to drivers for laptop GPUs but this is for a desktop (running 2 x RTX 2070 Super). I don't know what difference, if any, that will make.

Any guidance appreciated. Cheers.

APOLOGIES - I realise I wrote 546.17 in the thread title. I did try that driver, with the same results, which is why I then rolled back to a previous one (546.01). I did a clean install each time. It's 546.01 that is currently installed.

Comments

andyrpsmith wrote on 11/26/2023, 12:29 PM

I'm using the game version of 546.01 and having no issues. Might be useful to know your media?

Ian_S wrote on 11/26/2023, 12:30 PM

Thanks Andy - with which card?

andyrpsmith wrote on 11/26/2023, 12:32 PM

It's a 1080Ti and XAVCS 4K MP4 H264

Ian_S wrote on 11/26/2023, 12:48 PM

I've tested this with a variety of media, in a combined project as well as in individual projects with just one media type. So far, no joy with 4K or 1080p ProRes 422 (my usual format, from a Shogun Flame), 4K and 1080p AVC MP4, psd, png or generated solid colour media, test patterns or text.

Since posting, I just tried it out in V20 and it's the same result.

Howard-Vigorita wrote on 11/26/2023, 12:58 PM

@Ian_S Prores isn't hardware decodable and generated media doesn't need to be decoded. Your Nvidia gpu should be able to decode Avc 4k and 1080p if it's 420. I don't think Nvidia decodes anything 422.

j-v wrote on 11/26/2023, 1:01 PM

@Ian_S Please screenshot of the result of your Vegas 21 Help/ Check for Driver Updates

Ian_S wrote on 11/26/2023, 1:01 PM

@Ian_S Prores isn't hardware decodable and generated media doesn't need to be decoded. Your Nvidia gpu should be able to decode Avc 4k and 1080p if it's 420. I don't think Nvidia decodes anything 422.

Thank you . . . but regardless of that, all of these media types have always displayed in the Video Preview window in the past with GPU acceleration on or off.

Ian_S wrote on 11/26/2023, 1:05 PM

@Ian_S Please screenshot of the result of your Vegas 21 Help/ Check for Driver Updates

Ian_S wrote on 11/26/2023, 1:06 PM

Curiously, only one of the 2070s is shown in the GPU acceleration option in preferences. In V20, both are shown (but neither works when selected).

Ian_S wrote on 11/26/2023, 2:04 PM

I just tested it with the driver recommended in the sticky post (537.13, again a clean install) and I get the same results. Looks like the issue is unique to my system.

RogerS wrote on 11/26/2023, 6:31 PM

The issue must be with multiple GPUs by the same maker . Try disabling one in device manager? You can always enable it again. (I've got a 2080 super)

Ian_S wrote on 11/27/2023, 12:17 AM

Thank you. I just quickly tried it (by disabling one, then the other), but it just had the effect of removing the GPU completeley from the options in the GPU Acceleration dropdown. It just occurred to me that I have the two GPUs linked via NVLink, so as to take advantage of 2 x 8GB video RAM when rendering heavy 3d scenes in C4D, and Vegas (since v21) sees them as a single card, which might explain that. In v20 and before they were seen as multiple cards (in the dropdown).

I'm still unclear as to why I've successfully had two identical GPUs for a good number of years and not experienced this problem before.

I'm setting off for a shoot now, but I will do the same test in v20 tonight.