Ubuntu GTX1060 Hardware Encode doesn't work

warriorcookie · March 10, 2020, 5:24am

Server Version#: 1.18.8.2468
Player Version#: 4.22.2

Fresh Ubuntu 19.10 install with Nvidia GTX 1060 using Nvidia 435 drivers from PPA repo.

When enabling hardware transcoding the stream stops and just shows a black screen. Unchecking “Use Hardware-Accelerated Video Encoding” then allows the video to transcode and play without issue.

Found the following in logs:

DEBUG - Codecs: testing h264_vaapi (encoder)
DEBUG - Codecs: hardware transcoding: testing API vaapi
DEBUG - Codecs: hardware transcoding: opening hw device failed - probably not supported by this system, error: Input/output error
DEBUG - Codecs: testing h264_nvenc (encoder)
DEBUG - Codecs: hardware transcoding: testing API nvenc

DEBUG - Codecs: testing h264 (decoder) with hwdevice vaapi
DEBUG - Codecs: hardware transcoding: testing API vaapi
DEBUG - Codecs: hardware transcoding: opening hw device failed - probably not supported by this system, error: Input/output error
DEBUG - Codecs: testing h264 (decoder) with hwdevice nvdec
DEBUG - Codecs: hardware transcoding: testing API nvdec

I added user plex to both the video and render group

nvidia-smi does not show process /usr/lib/plexmediaserver/Plex Transcoder unless Encoding is unselected.

ls -l /dev/dri lists the following:

$ ls -l /dev/dri
total 0
drwxr-xr-x  2 root root         80 Mar  9 22:35 by-path
crw-rw----+ 1 root render 226,   0 Mar  9 22:39 card0
crw-rw----+ 1 root render 226, 128 Mar  9 22:39 renderD128

Any ideas would be greatly appreciated.

ChuckPa · March 10, 2020, 5:47am

Full DEBUG logs ZIP please which capture this?

It’s not possible to diagnose from snippets

Did you restart PMS after adding to the group?

warriorcookie · March 10, 2020, 2:32pm

Logs attached.

I restarted the service after adding to groups. I also restarted the server.

groups plex outputs the following:

$ groups plex
plex : plex video render

Plex Media Server Logs_2020-03-10_08-25-58.zip (925.2 KB)

ChuckPa · March 10, 2020, 2:56pm

Thanks for the logs.

It’s clearly not able to find the nvidia card.

Is this a headless server? If so, is there a dummy HDMI plug attached?

ChuckPa · March 10, 2020, 6:30pm

Using 1.18.8 and the lab’s GT1060,

Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuExternalMemoryGetMappedMipmappedArray
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuMipmappedArrayGetLevel
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuMipmappedArrayDestroy
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuImportExternalSemaphore
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuDestroyExternalSemaphore
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuSignalExternalSemaphoresAsync
Mar 10, 2020 17:11:52.226 [0x7fa4157fa700] DEBUG - [FFMPEG] - Loaded sym: cuWaitExternalSemaphoresAsync
Mar 10, 2020 17:11:52.239 [0x7fa4157fa700] DEBUG - Codecs: Testing with profile 'High'
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - Scaled up video bitrate to 2793Kbps based on 1.500000x fudge factor.
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - MDE: Rush Hour 2 (2001): Audio Direct Streaming is disabled, so video's audio stream will be transcoded
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - MDE: Cannot direct stream audio stream due to profile or setting limitations
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - MDE: Rush Hour 2 (2001): selected media 0 / 16984
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - Streaming Resource: Adding session 0x7fa404433d90:l35x16w1mmhsettfsngbbvrb which is using transcoder slot.  Used slots is now 1
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - Streaming Resource: Added session 0x7fa404433d90:l35x16w1mmhsettfsngbbvrb
Mar 10, 2020 17:11:52.247 [0x7fa4157fa700] DEBUG - Streaming Resource: Reached Decision id=9825 codes=(General=1001,Direct play not available; Conversion OK. Direct Play=3000,App cannot direct play this item. Direct play is disabled. Transcode=1001,Direct play not available; Conversion OK.) media=(id=16984 part=(id=16984 decision=transcode container=mp4 protocol=dash streams=(Video=(id=29901 decision=transcode bitrate=2793 encoder=h264_nvenc width=1920 height=800) Audio=(id=29902 decision=transcode bitrate=256 encoder=aac channels=2 rate=48000))))
Mar 10, 2020 17:11:52.248 [0x7fa496ffd700] DEBUG - Completed: [192.168.0.229:58605] 200 GET /video/:/transcode/universal/decision?hasMDE=1&path=%2Flibrary%2Fmetadata%2F9825&mediaIndex=0&partIndex=0&protocol=dash&fastSeek=1&directPlay=0&directStream=0&subtitleSize=100&audioBoost=100&location=lan&addDebugOverlay=0&autoAdjustQuality=0&directStreamAudio=0&mediaBufferSize=102400&session=nbbux0asd5tfaf3uw659xtvq&subtitles=burn&Accept-Language=en (17 live) TLS GZIP 156ms 3188 bytes (pipelined: 4)
Mar 10, 2020 17:11:52.319 [0x7fa4967fc700] DEBUG - Auth: authenticated user 1 as LeiFaWing
Mar 10, 2020 17:11:52.319 [0x7fa44dffb700] DEBUG - Request: [192.168.0.229:58606 (Subnet)] GET /video/:/transcode/universal/start.mpd?hasMDE=1&path=%2Flibrary%2Fmetadata%2F9825&mediaIndex=0&partIndex=0&protocol=dash&fastSeek=1&directPlay=0&directStream=0&subtitleSize=100&audioBoost=100&location=lan&addDebugOverlay=0&autoAdjustQuality=0&directStreamAudio=0&mediaBufferSize=102400&session=nbbux0asd5tfaf3uw659xtvq&subtitles=burn&Accept-Language=en (17 live) TLS GZIP Signed-in Token (LeiFaWing)
Mar 10, 2020 17:11:52.319 [0x7fa44dffb700] DEBUG - Found session GUID of nbbux0asd5tfaf3uw659xtvq in session start.
Mar 10, 2020 17:11:52.319 [0x7fa44dffb700] DEBUG - TranscodeUniversalRequest: using augmented profile Firefox
Mar 10, 2020 17:11:52.320 [0x7fa44dffb700] DEBUG - Downloading document http://127.0.0.1:32400/library/metadata/9825?checkFiles=1&includeBandwidths=1&offset=-1&X-Plex-Incomplete-Segments=1&X-Plex-Session-Identifier=l35x16w1mmhsettfsngbbvrb
Mar 10, 2020 17:11:52.320 [0x7fa44dffb700] DEBUG - Auth: authenticated user 1 as LeiFaWing
Mar 10, 2020 17:11:52.329 [0x7fa44dffb700] DEBUG - We're going to try to auto-select an audio stream for account 1.
Mar 10, 2020 17:11:52.329 [0x7fa44dffb700] DEBUG - Selecting best audio stream for part ID 16984 (autoselect: 0 language: en)
Mar 10, 2020 17:11:52.329 [0x7fa44dffb700] DEBUG - Audio Stream: 29902, Subtitle Stream: -1
Mar 10, 2020 17:11:52.330 [0x7fa44dffb700] DEBUG - Found session GUID of nbbux0asd5tfaf3uw659xtvq in session start.
Mar 10, 2020 17:11:52.330 [0x7fa44dffb700] DEBUG - Cleaning directory for session nbbux0asd5tfaf3uw659xtvq ()
Mar 10, 2020 17:11:52.331 [0x7fa44dffb700] DEBUG - Starting a transcode session nbbux0asd5tfaf3uw659xtvq at offset -1.0 (state=3)
Mar 10, 2020 17:11:52.331 [0x7fa44dffb700] DEBUG - TPU: hardware transcoding: using hardware decode accelerator nvdec
Mar 10, 2020 17:11:52.331 [0x7fa44dffb700] DEBUG - [Universal] Using local file path instead of URL: /mnt/media/Videos/Movies/Rush Hour 2 (2001) [1080p]/Rush.Hour.2.2001.1080p.BluRay.x264.YIFY.mp4
Mar 10, 2020 17:11:52.331 [0x7fa44dffb700] DEBUG - TPU: hardware transcoding: zero-copy support present
Mar 10, 2020 17:11:52.331 [0x7fa44dffb700] DEBUG - TPU: hardware transcoding: using zero-copy transcoding
Mar 10, 2020 17:11:52.332 [0x7fa44dffb700] DEBUG - TPU: hardware transcoding: final decoder: nvdec, final encoder: nvenc
Mar 10, 2020 17:11:52.332 [0x7fa44dffb700] DEBUG - Job running: EAE_ROOT='/tmp/pms-04ac11ff-f0c8-4f95-b2e1-278f818eb2e3/EasyAudioEncoder' FFMPEG_EXTERNAL_LIBS='/var/lib/plexmediaserver/Library/Application\ Support/Plex\ Media\ Server/Codecs/0bc617e-2974-linux-x86_64/' XDG_CACHE_HOME='/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Cache' XDG_DATA_HOME='/usr/lib/plexmediaserver/Resources' X_PLEX_TOKEN='xxxxxxxxxxxxxxxxxxxx' '/usr/lib/plexmediaserver/Plex Transcoder' '-codec:#0x01' 'h264' '-hwaccel:#0x01' 'nvdec' '-hwaccel_fallback_threshold:#0x01' '10' '-hwaccel_output_format:#0x01' 'cuda' '-codec:#0x02' 'aac' '-analyzeduration' '20000000' '-probesize' '20000000' '-i' '/mnt/media/Videos/Movies/Rush Hour 2 (2001) [1080p]/Rush.Hour.2.2001.1080p.BluRay.x264.YIFY.mp4' '-filter_complex' '[0:#0x01]hwupload[0];[0]scale_cuda=w=1920:h=800:format=nv12[1]' '-filter_complex' '[0:#0x02] aresample=async=1:ocl='\''stereo'\'':osr=48000[2]' '-map' '[1]' '-codec:0' 'h264_nvenc' '-b:0' '2094k' '-maxrate:0' '2793k' '-bufsize:0' '5586k' '-forced-idr:0' '1' '-r:0' '23.975999999999999' '-force_key_frames:0' 'expr:gte(t,0+n_forced*1)' '-map' '[2]' '-metadata:s:1' 'language=eng' '-codec:1' 'aac' '-b:1' '256k' '-f' 'dash' '-seg_duration' '1' '-init_seg_name' 'init-stream$RepresentationID$.m4s' '-media_seg_name' 'chunk-stream$RepresentationID$-$Number%05d$.m4s' '-window_size' '5' '-delete_removed' 'false' '-skip_to_segment' '1' '-time_delta' '0.0625' '-manifest_name' 'http://127.0.0.1:32400/video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/manifest?X-Plex-Http-Pipeline=infinite' '-avoid_negative_ts' 'disabled' '-map_metadata' '-1' '-map_chapters' '-1' 'dash' '-start_at_zero' '-copyts' '-vsync' 'cfr' '-y' '-init_hw_device' 'cuda=cuda:' '-hwaccel_device' 'cuda' '-filter_hw_device' 'cuda' '-nostats' '-loglevel' 'quiet' '-loglevel_plex' 'error' '-progressurl' 'http://127.0.0.1:32400/video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress'
Mar 10, 2020 17:11:52.332 [0x7fa44dffb700] DEBUG - Jobs: Starting child process with pid 30021
Mar 10, 2020 17:11:52.337 [0x7fa46d7fa700] DEBUG - Request: [127.0.0.1:47288 (Loopback)] PUT /video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress?status=startup (18 live) Signed-in Token (LeiFaWing) (range: bytes=0-) 
Mar 10, 2020 17:11:52.337 [0x7fa4967fc700] DEBUG - Completed: [127.0.0.1:47288] 204 PUT /video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress?status=startup (18 live) 0ms 203 bytes (pipelined: 1) (range: bytes=0-) 
Mar 10, 2020 17:11:52.364 [0x7fa44e7fc700] DEBUG - Request: [127.0.0.1:47288 (Loopback)] PUT /video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress?status=startup (18 live) Signed-in Token (LeiFaWing) (range: bytes=0-) 
Mar 10, 2020 17:11:52.364 [0x7fa4967fc700] DEBUG - Completed: [127.0.0.1:47288] 204 PUT /video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress?status=startup (18 live) 0ms 203 bytes (pipelined: 2) (range: bytes=0-) 
Mar 10, 2020 17:11:52.364 [0x7fa415ffb700] DEBUG - Request: [127.0.0.1:47288 (Loopback)] PUT /video/:/transcode/session/nbbux0asd5tfaf3uw659xtvq/d45026a9-68c9-4ccd-8f6d-f0c499b0dc0e/progress?status=opening (18 live) Signed-in Token (LeiFaWing) (range: bytes=0-)

warriorcookie · March 10, 2020, 8:08pm

But if finds the nvidia card when I disable encoding, logs attached. And nvida-smi shows the decode process:

$ nvidia-smi
Tue Mar 10 14:04:06 2020       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 435.21       Driver Version: 435.21       CUDA Version: 10.1     |
|-------------------------------+----------------------+----------------------+
| 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 GTX 106...  Off  | 00000000:03:00.0  On |                  N/A |
|  0%   58C    P2    34W / 120W |    383MiB /  6078MiB |      5%      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID   Type   Process name                             Usage      |
|=============================================================================|
|    0      1384      G   /usr/lib/xorg/Xorg                            39MiB |
|    0      1639      G   /usr/bin/gnome-shell                          46MiB |
|    0      2241      C   /usr/lib/plexmediaserver/Plex Transcoder     285MiB |
+-----------------------------------------------------------------------------+

It is a headless machine yes, and yes I have a HDMI dummy attached.

Thanks for the help.

Plex Media Server Logs_2020-03-10_14-06-16.zip (940.6 KB)

warriorcookie · March 10, 2020, 8:10pm

Which nvidia drivers are you using?

TeknoJunky · March 10, 2020, 8:14pm

perhaps try one of the newer drivers, there is a list of known working drivers @ https://github.com/keylase/nvidia-patch

edit: (you DO need the patch to remove encoder limit)

warriorcookie · March 10, 2020, 8:41pm

I thought that was going to be it.

The newest driver offered by the ppa repo is 435.21 which shows not supporting NVFBC. I purged and installed 440.64.00 manually.

Same results. Only works with encoding disabled. Decode only.

Anything else I can try?

TeknoJunky · March 10, 2020, 8:44pm

well as a hail mary, try plugging in a monitor.

i have a 1650 on debian and it been trouble free for me, and well my setup is completely different (diff card/os).

ChuckPa · March 10, 2020, 8:45pm

Lab drivers are still 418.30

That’s the min version required.

I do think a HDMI dummy plug or monitor is required.

I’m 3000 miles from the lab so can’t try both ways.

warriorcookie · March 11, 2020, 1:24am

I’ll try rolling back the drivers maybe.

I do have a dummy plug. But I’ll try a monitor next too.

warriorcookie · March 11, 2020, 4:42am

So, I tried a few different versions of the nvidia drivers both manual and ppa repo apt-get style with no changes. Also plugged in a monitor instead of the dummy plug.

Finally found the solution and not sure why it worked. I found another forum post where someone ran the patch here: https://github.com/keylase/nvidia-patch even though it’s no longer required and it work. I tried it and sure enough hardware encode and decode works perfect now.

TeknoJunky · March 11, 2020, 3:11pm

Yes, I just came back to follow up, I posted above that the patch is not needed, but I was thinking of the transcoder patch.

this patch linked above will remove the 2 encode limit from the gtx.

as your screenshot above showed, it was already using 2 process before plex, which was preventing plex from using hw encoding.

warriorcookie · March 11, 2020, 11:56pm

That makes sense. I wonder if it’s because there’s an x server installed or if it’s because I have a remote desktop server installed (nomachine).

I assumed since those were both compute processes they didn’t count towards the 2 stream max.

Thanks for all the help Tekno and Chuck!

ChuckPa · March 12, 2020, 12:10am

I am blind.

Yes. glass manager had taken control of it (count = 2)

system · June 10, 2020, 12:10am

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.

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