Linux Mint 18, Ubuntu 16.04 AMD Radeon open source video problem, vainfo error

Getting poor video playback or video problems using Linux Mint 18 or Ubuntu 16.04 and the open source AMD Radeon driver?

You will probably notice your vainfo shows an error:

#vainfo
libva: VA-API version 0.32.0
libva: va_getDriverName() returns 0
libva: Trying to open /usr/lib/dri/r600_drv_video.so
libva: va_openDriver() returns -1

install vdpau-va-driver
sudo apt install vdpau-va-driver

Now add LIBVA_DRIVER_NAME=vdpau to /etc/environment and reoot.

now all should be good and vainfo should show something like
#vainfo
libva info: VA-API version 0.39.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'vdpau'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/vdpau_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.39 (libva 1.7.0)
vainfo: Driver version: Splitted-Desktop Systems VDPAU backend for VA-API - 0.7.4
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileMPEG4Simple : VAEntrypointVLD
VAProfileMPEG4AdvancedSimple : VAEntrypointVLD
VAProfileH264Baseline : VAEntrypointVLD
VAProfileH264Main : VAEntrypointVLD
VAProfileH264High : VAEntrypointVLD
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD

[update]This does not work with Radeon R7 360 and is not needed[/update]

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