No graphics with GeForce Driver 451.77 with Discovery

- July 30, 2020 at 12:59 am
  
  tentechllc
  Subscriber
  
  Hi there,
  
  I do realize this is an NVIDIA driver issue, but I wanted to bring attention to an apparent issue with the latest GeForce Drivers (in this case Studio Driver 451.77). In short, the excellent Discovery 2020R2 loses its graphics entirely with this new driver. The older driver works OK, which is a mild workaround as this doesn't support the new Windows 10 Hardware-accelerated GPU Scheduling. Can you guys at ANSYS ping NVIDIA and look into it? Here's what it looks like:
- July 30, 2020 at 7:23 am
  
  Charudatta Bandgar
  Subscriber
  
  Hello TEN TECH LLC ,
  
  Thanks for bringing this to our notice,
  
  This issue has been noticed before as well, and our developers and testers have tried the GeForce Driver 451.77 with Discovery, it does work for some machines, hence might not be a general issue. There could be other factors involved as well, which the developers are investigating.
  
  Are your CUDA drivers up-to-date?
  
  I will let you know if I get any further information regarding the progress.
  
  Regards.
  - July 30, 2020 at 9:55 am
    
    tentechllc
    Subscriber
    
    Charudatta Bandgar Thanks for the quick reply. The machine in question is a laptop with an RTX 2080 Max-Q. Discovery Live works perfectly, but not Discovery so I'm not sure if it's a CUDA issue... I'll check on another machine with GeForce to see...
  - July 30, 2020 at 10:56 am
    
    tentechllc
    Subscriber
    
    Charudatta Bandgar Tried it on a Desktop GeForce 2070, and Driver 451.77 and it works as designed, so you're right, something's up the Mobile version of the card/driver combo!
  - July 30, 2020 at 1:22 pm
    
    Charudatta Bandgar
    Subscriber
    
    Hello TEN TECH LLC ,
    
    Thanks for confirming.
    
    something's up the Mobile version of the card/driver combo!
    
    I will highlight this observation to the concerned people.
- July 30, 2020 at 1:38 pm
  
  Charudatta Bandgar
  Subscriber
  
  Hello TEN TECH LLC ,
  
  something's up the Mobile version of the card/driver combo
  
  One way to determine if it's GPU specific is to disable GeForce on the laptop (with hardware GPU enabled) and then try to load geometry. Can you please try doing it?
  
  Regards.
  - July 30, 2020 at 1:46 pm
    
    tentechllc
    Subscriber
    
    Charudatta Bandgar If I force Discovery to run off the Intel UHD Graphics card, the graphics are back. BTW, driver 451.48 is as bad as 451.77. I guess the whole 451 branch has an issue...
- July 30, 2020 at 1:55 pm
  
  Charudatta Bandgar
  Subscriber
  
  Hello TEN TECH LLC
  
  driver 451.48 is as bad as 451.77. I guess the whole 451 branch has an issue
  
  May I know what issue you are facing with 451.48?
  Regards.
  - July 30, 2020 at 2:00 pm
    
    tentechllc
    Subscriber
    
    Charudatta Bandgar Same as 451.77: Ansys Discovery (not Live) is not displaying any geometry/graphics
- July 30, 2020 at 3:11 pm
  
  tentechllc
  Subscriber
  
  I tried the Gaming Driver latest (451.67) to no avail, still no graphics in Discovery. Reverting back to 442.92 Studio Driver, the last one to work with Discovery... 3 months old driver that doesn't support GPU Scheduling on Windows 10 :-(
- August 17, 2020 at 7:20 pm
  
  tentechllc
  Subscriber
  
  Tried with the new 452.06 today and same issue... I guess it's something with the 45x version
  - August 18, 2020 at 4:52 am
    
    Charudatta Bandgar
    Subscriber
    
    Thanks a lot, TEN TECH LLC .
    
    This is very valuable information and I will convey it to the developers. I had filed a bug report (Bug ID:323999) to address this issue, I will keep you posted with the updates.
    
    Tried with the new 452.06 today
    
    Did you try it on your laptop?
    Regards.
- September 2, 2020 at 1:16 pm
  
  Charudatta Bandgar
  Subscriber
  
  Hello TEN TECH LLC ,
  
  Can you please check the 45x.xx drivers with the new 2020R2.5?
  
  Regards.
- September 2, 2020 at 2:12 pm
  
  tentechllc
  Subscriber
  
  Sadly, same issue... Didn't realize R2.5 was out, thanks for pointing it out! I even tried to set Windows' Graphics Performance to no avail:
  - September 2, 2020 at 2:23 pm
    
    Charudatta Bandgar
    Subscriber
    
    Thanks for the information, TEN TECH LLC
    
    Regards.
- September 17, 2020 at 4:48 pm
  
  tentechllc
  Subscriber
  
  Tried the brand new 456.38 driver and still no dice, very frustrating!
  - September 18, 2020 at 4:01 am
    
    Charudatta Bandgar
    Subscriber
    
    That is not good, TEN TECH LLC
    
    I will inform the concerned people.
    
    Regards.
- September 25, 2020 at 2:47 pm
  
  jchokan
  Subscriber
  
  Hello,
  
  Have there been any updates on the rendering issues in Discovery 2020 using 45x series graphics drivers? I have version 452.06 and am having the issue.
  
  Thanks
  - December 11, 2020 at 12:47 pm
    
    tentechllc
    Subscriber
    
    Jchokan looks like the 45x.x series was a "no", but I'm now running 460.79 and got my graphics back! Feels good to have a driver that's not 8 months old :-)
- December 9, 2020 at 3:59 pm
  
  tentechllc
  Subscriber
  
  Good news on this front: NVIDIA Driver 460.79, albeit being a Games driver (and not Studio) finally works with Discovery 2020R2.5!