Hardware acceleration on Gentoo Linux server (VAAPI)

Plex Media Server Desktops & Laptops
1

Hallo, I have Plex server on my HPE Proliant Microserver GEN10 with GPU: Advanced Micro Devices, Inc. [AMD/ATI] Lexa XT [Radeon PRO WX 3100]. Server is Gentoo-amd64 with kernel linux-4.19.17. Vaapi work properly, vainfo is here:

libva info: VA-API version 1.3.0
libva info: va_getDriverName() returns 0
libva info: User requested driver ‘radeonsi’
libva info: Trying to open /usr/lib64/va/drivers/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_3
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.3 (libva 2.3.0)
vainfo: Driver version: Mesa Gallium driver 18.3.2 for AMD Radeon Pro WX3100 (POLARIS12, DRM 3.27.0, 4.19.17-gentoo, LLVM 6.0.1)
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileNone : VAEntrypointVideoProc

I try versions 1.12.3, 1.13.2-r1 1.14.1.5488, 1.15.0573

Server Version#: media-tv/plex-media-server-1.15.0.573

Hardware acceleration don’t work. I have Montly Plex Pass and I have checked Use hardware acceleration when available.

2

Under Linux this would only encode video, the CPU would still need to decode.
Plex in Docker, VM, or native?
What video? Certainly not 4K.

3

Plex is native emerged from gentoo or fkmclane overlays. Video is full HD or 720p. Kodek x264 or HEVc. GPU supported 4K video, but I have only full HD TV (1920x1080). On tv I use direct playing, TV has HEVc kodek. I need transcode on computer or on smartphone.

4

Please recreate the problem, with DEBUG logging only (not VERBOSE) enabled.

Start playback
Play for 10 seconds
Stop playback
Wait 30 seconds for buffers to get to disk.
Settings - Server - Troubleshooting - Download Logs
Attach the ZIP file it gives you here please.

5

Plex Media Server Logs_2019-01-25_21-13-44.zip (488,3 KB)

I allready logged plex, I see vaapi problem. vainfo is ok for plex user:

plex@server ~/ $ vainfo
error: can’t connect to X server!
libva info: VA-API version 1.3.0
libva info: va_getDriverName() returns 0
libva info: User requested driver ‘radeonsi’
libva info: Trying to open /usr/lib64/va/drivers/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_3
Failed to create /var/lib/plexmediaserver/.cache for shader cache (Permission denied)—disabling.
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.3 (libva 2.3.0)
vainfo: Driver version: Mesa Gallium driver 18.3.2 for AMD Radeon Pro WX3100 (POLARIS12, DRM 3.27.0, 4.19.17-gentoo, LLVM 6.0.1)
vainfo: Supported profile and entrypoints
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileNone : VAEntrypointVideoProc

6

Thanks for that info.

Officially, there is no support for external GPUs.
I am aware that nVidia GPUs will work when configured correctly
I have not seen where AMD will work because libmesa is not yet part of PMS.

7

OK, but my server has a little (15W TDP) processor Amd Opteron X3216 with 2x3GHz cores. Processor has graphic without HEVC and this is no support, too. Server is microserver with one PCI-E x8 for half card.
This card AMD Radeon Pro WX3100 is primary for my OpenCl computing.
Sorry for my English, is very poor.

8

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