Hello there,

With Chrome 99, the neccesary libva version is >=2.11. Deepin repo is contain 2.4.0. (really old)

If we try to install a new version of libva (for example from debian testing repo) it install a LOT of dependencys and we get a "mule" system... I also try to install it from source, but it not work on my side.

After that, i fortunatelly found this topic, that help me solve the problem.

So the step-by-step guide:

1. Install Non-Free Intel GPU driver (not necceasry, but i prefer it)

   For Intel Gen 7 and earlier hardware:

   sudo apt install i965-va-driver-shaders
   

   For Intel Gen 8+ hardware:

   sudo apt install intel-media-va-driver-non-free
   

2. Download this packages:
   libva-2.14_deb_deepin.zip

   vainfo_2.12.0+ds1-1_amd64.zip

3. Unzip it, and install all deb packages:

   libva (amd64 folder)

   dpkg -i ./libva*
   

   It install all neccesary libva components. (drm, etc...)

   vainfo

   dpkg -i ./vainfo*
   
   

4. Install missing dependencies

   sudo apt -f install
   

Now, your libva version is 2.14, it is enought that you able to run chrome with hardware decoding!

/opt/apps/cn.google.chrome/files/chrome --disable-features=UseChromeOSDirectVideoDecoder --enable-features=VaapiVideoDecoder