[BUG] "No graphic card detected!" with GTX 780, no CUDA

[atomicthumbs]

Version: Windows 64-bit, 2017.05.06.1; Nvidia driver is updated.

"No graphic card detected!" dialog pops up on startup; NVEnc doesn't show up in Video Handling menu.

Step-by-step guide: have Nvidia GTX 780 and open Hybrid.

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Debug output attached.

[Selur]

Okay, that is a new one.
On Windows Hybrid checks all entries of the Windows Registry under "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Video" for 'Device Description' and only reports "No graphic card detected!" when it can't find any such entry.
-> Does your Windows Registry contain any such entries? Are you running some anti-virus software or similar that is hindering Hybrid from reading those entries?
(Side note: Don't run Hybrid with Administrator rights! Reading the registry should not require additional rights.)

Cu Selur

[atomicthumbs]

Here's what's under that Video key:



Of note, the second Video key (highlighted) has a value named DeviceDesc with the data:

@oem66.inf,%nvidia_dev.1004%;NVIDIA GeForce GTX 780

There are no values directly under HKLM\SYSTEM\CurrentControlSet\Control\Video.

I'm running Windows Insider build 16241, if that helps.

[Selur]

Hybrid searches all keys under "HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Video" for 'Device Description'.

Cu Selur

[atomicthumbs]

no such key exists on my computer anywhere under the video path.

no idea why not, but there are a number of other keys that seem to contain similar info. checking for others might help; I suspect that other people have this issue, as I haven't done anything special or out of the ordinary, but perhaps they just don't use NVenc.

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I just installed hybrid 2017.5.6.1 on my laptop, which has Intel integrated graphics, and it's having the exact same issue. I know Quicksync encode and decode works with other software.

[Selur]

Did you install the official drivers from NVIDIA/Intel (not just the drivers that come with Windows) ?

[atomicthumbs]

Yes, in both cases. Given that both computers are running the same Windows Insider fast ring build, I suspect it's an issue with that; if this is the case, it will affect all users once the next major Windows update is released.

[Selur]

Once that is the case I will look into it, seems strange since normally the drivers write those settings not Windows itself.

[Kazdoom]

Heyo, 

For whatever it's worth I have the same issue. 

• Windows Build 16257
  
• NVIDIA GTX 1080, Driver 384.94
  

Installed from NVIDIA (Not MS)

I looked at those keys and found several with DeviceDesc, but none with DeviceDescription (or were you just generalizing?)

If it helps I'm happy to export my Reg entries

[Selur]

No, I'm not generalizing. Hybrid looks for 'Device Description' entries below 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video'.

An export of the 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Video' might be worth a look.

Cu Selur