No hardware encoder in Linux server

[taiziccf]

Ubuntu 24.04, still no hardware encoding even after upgraded to 8.12.12, was expecting that nomachine will now use Intel VPL.

Referring to this previous post

NoMachine Forum – Hardware encoder not working on Linux

[Britgirl]

Hi, this time we need to see the debug logs. Are you able to send us the server-side logs with debug enabled so we can check them? Full instructions are here: https://kb.nomachine.com/DT07S00243

Send them to forum[at]nomachine[dot]com. Please use the title of this topic as the subject of your email. Thanks!

 

[taiziccf]

Hi, I had sent the email, thanks.

[fra81]

Hi, would you try this workaround?

1.$ cd /usr/NX/lib
2. $ sudo mv libvpl.so libvpl.so.ori
3. $ find / -name "libvpl.so*"
4a. If ‘libvpl.so’ (the exact name, without suffixes) is found in the system by the previous command, then skip to step 7 to restart the server
4b. If the libvpl library is found with a slightly different name like ‘libvpl.so.2′ or similar, then proceed to step 5 to create a symlink
5. $ cd <directory_where_is_libvpl.so.2>
6. $ sudo ln -s libvpl.so.2 libvpl.so
7. $ /usr/NX/bin/nxserver --restart

[taiziccf]

thank you for the advise, however is still not working:

 

chchia@linux:/usr/local/lib$ sudo find / -name ‘libvpl.so*’

/usr/lib/x86_64-linux-gnu/libvpl.so.2.9

/usr/lib/x86_64-linux-gnu/libvpl.so.2

/usr/NX/lib/libvpl.so.ori

/usr/local/lib/libvpl.so.2.12

/usr/local/lib/libvpl.so

/usr/local/lib/libvpl.so.2

 

chchia@linux:/usr/lib/x86_64-linux-gnu$ sudo ln -s libvpl.so.2 libvpl.so

chchia@linux:/usr/lib/x86_64-linux-gnu$ sudo /usr/NX/bin/nxserver –restart

 

 

chchia@linux:/usr/lib/x86_64-linux-gnu$ vpl-inspect

 

Implementation #0: mfxhw64

Library path: /usr/lib/x86_64-linux-gnu/libmfxhw64.so.1.35

AccelerationMode: MFX_ACCEL_MODE_VIA_VAAPI

ApiVersion: 1.35

Impl: MFX_IMPL_TYPE_HARDWARE

VendorImplID: 0x0000

ImplName: mfxhw64

License:

Version: 1.2

Keywords: MSDK,x64

VendorID: 0x8086

mfxAccelerationModeDescription:

Version: 1.0

Mode: MFX_ACCEL_MODE_VIA_VAAPI

mfxPoolPolicyDescription:

Version: 1.0

mfxDeviceDescription:

MediaAdapterType: MFX_MEDIA_UNKNOWN

DeviceID: 4692/0

Version: 1.1

mfxDecoderDescription:

Version: 0.0

mfxEncoderDescription:

Version: 0.0

mfxVPPDescription:

Version: 0.0

NumExtParam: 0

 

Total number of implementations found = 1

 

[timo]

libmfxhw64.so is Intel Media SDK.

Are you sure your hardware supports this?

Newer hardware (like ARC/DG2 cards but also newer UHD IGPs) use libmfx-gen.so instead.

Not sure about Ubuntu but for Fedora that’s shipped with

intel-vpl-gpu-rt

[taiziccf]

Thank you, your idea enlighten me, i removed the libvpl.so shipped with nomachine, and proceed to compile my own driver, and it is working now with hardware VPL encoder.

太子: Ubuntu Cinnamon 24.04 with UHD730 passthrough and NoMachine HW encoding (oneVPL) (taiziccf.blogspot.com)

I put the guide in the link above in my blogger, how this help.

thank you all for helping.

[Britgirl]

Hi, can you try 8.13 which we just released? Our codec devs added some improvements for the loading of libvpl to avoid this problem.

[taiziccf]

Hi, no 8.13 is same does not load HW VPL. I tested this on a freshly setup Ubuntu Cinnamon 24.04.

[taiziccf]

I made some performance comparison between HW VPL and software encoding, the benchmark software used was glmark2 system resolution 1920×1080, hardware was Intel Alderlake i5 12400 UHD730 and here the summary :

Not using NoMachine direct HDMI to monitor: glmark2 score around 2550

Using NoMachine HW Enc VPL: glmark2 score around 1550

Using NoMachine Software Enc: glmark score around 1750

 

but good thing is HW VPL does significantly lower the CPU consumption.

 

[taiziccf]

Sorry I mean even compared between HW VPL and software enc both h264, still software is using significantly lesser CPU power for /nxnode.bin

[Britgirl]

Version 8.13 fixes just the step with changing name (or removing) /usr/NX/lib/libvpl.so – but the other steps like installing rest of the vpl stack should still be neccessary. You seem to have executed a lot of additional steps. We updated our article in the knowledge base, so you should follow the instructions there?

How to use Intel H.264 HW encoder with NoMachine
https://kb.nomachine.com/AR09O00938

Regarding your comment about SW encoding, you should compare nxcodec.bin and nxnode.bin, not just nxnode.bin, if you’re interested 🙂

[Jonathan]

Hey there

I also had problems with HW encoding on arch + nomachine 8.13 + Intel Raptor Lake CPU.
Got various errors in session-log :
Library: WARNING! Could not resolve symbol ‘MFXClose’.
Library: WARNING! Error is ‘/usr/NX/lib/libvpl.so: undefined symbol: MFXClose’
VPLLibraryDispatcher/load: WARNING! Failed to load symbol ‘MFXClose’.

Turned out I had intel-media-sdk AND libvpl installed.

After deinstalling intel-media-sdk and rebooting HW encoding worked perfectly.

Maybe this helps others with the same issue.

Greetings

[AlsoCoryCarson]

I was having this problem too. Ubuntu 24.04, N100 mini pc.

Installing the packages mentioned in https://kb.nomachine.com/AR09O00938 and now I get hardware encoded h264!

Thank you for chasing this down.

[Author]

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