Passthrough iGPU into LXC and activate Plex HW Transcode
Mặc định, Plex sẽ sử dụng CPU để chuyển mã và nó sẽ làm cho máy chủ Plex của bạn chậm lại vì tất cả các tài nguyên CPU có sẵn đều được sử dụng để chuyển mã.
1. Requirements
- Plex Pass subscription.
- CPU with Intel HD Graphics 6xx (for transcoding 4K video)
- LXC with installing Plex Media Server
2. Passthrough iGPU to LXC Unprivileged
First of all, you need to activate IOMMU and iGPU for passthrough in my previous article.
Activate IOMMU and iGPU to Passthrough PCI into VM/CT
Verify that iGPU is detected and define major and minor numbers of iGPU.
- In the Proxmox Server
1lspci -nnv | grep VGA
1ls -l /dev/dri
card0- major: 226
- minor: 0
renderD128- major: 226
- minor: 128
Open the LXC configuration and add the below to the config
1nano /etc/pve/lxc/<Container_ID>.conf
1lxc.cgroup2.devices.allow: c 226:0 rwm
2lxc.cgroup2.devices.allow: c 226:128 rwm
3lxc.mount.entry: /dev/dri/renderD128 dev/dri/renderD128 none bind,optional,create=file 0, 0
4lxc.mount.entry: /dev/dri dev/dri none bind,optional,create=dir
Now, the LXC Configuration will look like this
After that, restart the LXC container to apply changes
1pct stop <Container_ID>
2pct start <Container_ID>
3. Verify iGPU is passthrough into LXC
SSH to the LXC and type the code below
1apt -y update
2apt -y install vainfo
3vainfo
1root@plex:~# vainfo
2error: can't connect to X server!
3libva info: VA-API version 1.17.0
4libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
5libva info: Found init function __vaDriverInit_1_17
6libva info: va_openDriver() returns 0
7vainfo: VA-API version: 1.17 (libva 2.12.0)
8vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 23.1.1 ()
9vainfo: Supported profile and entrypoints
10 VAProfileMPEG2Simple : VAEntrypointVLD
11 VAProfileMPEG2Main : VAEntrypointVLD
12 VAProfileH264Main : VAEntrypointVLD
13 VAProfileH264Main : VAEntrypointEncSliceLP
14 VAProfileH264High : VAEntrypointVLD
15 VAProfileH264High : VAEntrypointEncSliceLP
16 VAProfileJPEGBaseline : VAEntrypointVLD
17 VAProfileJPEGBaseline : VAEntrypointEncPicture
18 VAProfileH264ConstrainedBaseline: VAEntrypointVLD
19 VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
20 VAProfileVP8Version0_3 : VAEntrypointVLD
21 VAProfileHEVCMain : VAEntrypointVLD
22 VAProfileHEVCMain10 : VAEntrypointVLD
23 VAProfileVP9Profile0 : VAEntrypointVLD
24 VAProfileVP9Profile2 : VAEntrypointVLD
4. Setup hardware transcode on Plex Server
Go to your Plex Media Server —> Setting —> Transcoder —> Show Advanced.
- [v] Use hardware acceleration when available
- [v] Use hardware-accelerated video encoding
5. Verify Plex using HW Transcode
On your PC or your phone. Play a random movie and choose the quality Convert to 1080p HD (High) or something.
Go back to your Plex Dashboard, You will see the line Transcode (hw) in the Video Tab, That means Plex is using the Quick Sync function of iGPU to transcode the video.
And LXC Dashboard in Proxmox host, the CPU is not fulload 95% —> 100% anymore.