View Single Post
Old 15th April 2018, 15:45   #50290  |  Link
brazen1
Registered User
 
Join Date: Oct 2017
Posts: 331
RE: which NVidia drivers and why, here is copy paste from where I originally posted this a couple weeks ago, fwiw. You may not be aware of the audio problem I encountered. I'm using 385.69 but as Manni pointed out, custom modes with 12bit does not work so I too will probably revert to 385.28. A shame we have to use drivers this old.

I have discovered what I assume is another bug introduced by NVidia drivers. Yesterday I decided to work it out. The problem:

Right click your volume icon with your AVR OFF or in standby using passthrough. It should be setup for Stereo.
Now, turn your AVR ON. It should be setup for 5.1 or 7.1 etc. (What ever you use during video playback)
This should automate between stereo and 7.1 (for example) as you toggle your AVR off and on. If it doesn't, you will have to manually change it. If you forget, high bitrate audios will malfunction (audio filter errors) during video playback mode and/or youtube videos from desktop mode will not start.

Not knowing if this was associated with a Windows update or something else, I decided to install NVidia drivers working backwards to rule them out as the culprit or find a working driver to identify where the problem originated.
Eventually the audio setup started working as intended and I've concluded it is an NVidia driver issue. Here's what I installed and concluded using DDU between installs:

391.35-desktop-win10-64bit-international-whql.exe = Audio problem.
391.24-desktop-win10-64bit-international-whql.exe = Audio problem.
391.01-desktop-win10-64bit-international-whql.exe = Audio problem.
390.65-desktop-win10-64bit-international-whql.exe = Audio problem. This is the driver the audio problem was introduced.
All of these drivers also cannot retain a 12bit setting after a reboot but you should be using 8bit anyway since 12bit introduces banding unless your display handles 12bit native properly.

388.59-desktop-win10-64bit-international-whql.exe = Does not turn HDR off after HDR playback but Audio switching problem is not present. This was the last good driver for audio switching.
387.92-desktop-win10-64bit-international-rs3-whql.exe = Does not turn HDR on prior to HDR playback.
385.69-desktop-win10-64bit-international-whql.exe = Working properly for HDR and Audio switching but any mouse movement turns 3D into 2D briefly. This is the driver I have reverted to. This also means I will need to use FSE.
385.28-desktop-win10-64bit-international-whql.exe = Working properly for HDR and Audio switching.
These drivers survive a reboot when using 12bit but again, you should be using 8bit unless your display handles 12bit native properly.

Understanding Nvidia has worked out many bugs, it now has these:

No 10bit selection when using RGB.
No auto switch from stereo to multiple speaker setup in Windows Audio considering if AVR state is On or Off.
Audio Video sync for common refresh rates such as 23.976 f/ps leads to dropped frames without creating custom timings.
__________________
HOW TO-Kodi 2D-3D-UHD (4k) HDR Guide Internal & External Players
W11 Pro 24H2 GTX960-4GB RGB 4:4:4 @Matched Refresh Rates 8,10,12bit
KODI 22 MPC-HC/BE 82" Q90R Denon S720W

Last edited by brazen1; 16th April 2018 at 01:33.
brazen1 is offline   Reply With Quote