New install of Debian bookworm on a system featuring an AMD Radeon RX 6600 using the amdgpu driver. I installed vdpauinfo (sudo apt install vdpauinfo) and found a problem that is discussed in the [Arch wiki](https://wiki.archlinux.org/title/Hardware_video_acceleration#Configuring_VDPAU) .

> vdpauinfo
display: :0   screen: 0
Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory
Error creating VDPAU device: 1

I'm surprised this isn't configured out of the box with bookworm (and I'm new to Debian). Am I missing something, or do I need to set the VDPAU_DRIVER environment variable (which is unset out of the box in my distro)?

I have an Nvidia GeForce 940M GPU in my laptop: $ lspci -nn | grep NVIDIA 04:00.0 3D controller : NVIDIA Corporation GM108M [GeForce 940M] [10de:1347] (rev a2) I use the proprietary nvidia driver version 387.12: $ nvidia-smi | head Sat Oct 28 10:39:43 2017 +-----------------------------------------------------------------------------+ | NVIDIA-SMI 387.12 Driver Version: 387.12 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | |===============================+======================+======================| | 0 GeForce 940M Off | 00000000:04:00.0 Off | N/A | | N/A 48C P8 N/A / N/A | 204MiB / 2002MiB | 0% Default | +-------------------------------+----------------------+----------------------+ According to the driver documentation , VDPAU features of my GPU should be supported. Yet, when I actually try, it fails: $ vdpauinfo display: :0 screen: 0 GPU at BusId 0x4 doesn't have a supported video decoder Error creating VDPAU device: 1 Naturally, media players can't use hardware acceleration either. What am I doing wrong?

I am using archlinux trying to connect to an RTSP stream on my local network (local IP camera) and am getting very hit-and-miss performance from VLC. Most of the time the connection runs just fine, but sometimes the connection _freezes_ and I have to close and reopen to resume. Running from the terminal shows the following: VLC media player 2.2.4 Weatherwax (revision 2.2.3-37-g888b7e89) [0000000000bbf1f8] dummy interface: using the dummy interface module... Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory Failed to open VDPAU backend libvdpau_nvidia.so: cannot open shared object file: No such file or directory [00007fa54800c618] avcodec decoder error: more than 5 seconds of late video -> dropping frame (computer too slow ?) ... ... [00007fa54800c618] avcodec decoder error: more than 5 seconds of late video -> dropping frame (computer too slow ?) This is obviously a bit off as this is an intel laptop with no nvidia components. I cannot figure out where/why it is looking for nvidia files (or if it is even relevant to the problem) Running grep -iE 'vdpau|dri driver' ~/.local/share/xorg/Xorg.0.log yields: [ 99171.065] (II) intel(0): [DRI2] DRI driver: i965 [ 99171.065] (II) intel(0): [DRI2] VDPAU driver: va_gl Running vainfo yields: libva info: VA-API version 0.39.4 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib/dri/i965_drv_video.so libva info: Found init function __vaDriverInit_0_39 libva info: va_openDriver() returns 0 vainfo: VA-API version: 0.39 (libva 1.7.3) vainfo: Driver version: Intel i965 driver for Intel(R) Ivybridge Mobile - 1.7.3 vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Simple : VAEntrypointEncSlice VAProfileMPEG2Main : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointEncSlice VAProfileH264ConstrainedBaseline: VAEntrypointVLD VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice VAProfileH264Main : VAEntrypointVLD VAProfileH264Main : VAEntrypointEncSlice VAProfileH264High : VAEntrypointVLD VAProfileH264High : VAEntrypointEncSlice VAProfileH264StereoHigh : VAEntrypointVLD VAProfileVC1Simple : VAEntrypointVLD VAProfileVC1Main : VAEntrypointVLD VAProfileVC1Advanced : VAEntrypointVLD VAProfileNone : VAEntrypointVideoProc VAProfileJPEGBaseline : VAEntrypointVLD I've read the relevant arch wiki articles (I believe), but cannot get a stable connection. I have extra/libva, extra/libva-intel-driver, and extra/libva-vdpau-driver installed and this seems like it should do it... what am I missing?