Help needed. Desktop of a vm with intel 12gen gpu passthrough on a local monitor

[rdmitry0911]

Hi guys, I've managed to install sriov virtual gpu to windows 11 vm according to this guide. Everything is working now and I can access the vm via spice or rdp. Howevewr, I'd like to access this vm locally via keyboard, mouse and monitor attached to proxmox host itself. I can passthrough mouse and keyboard as they are usb devices, however I have no idea how to attach a monitor to a virtual gpu inside vm or how to redirect this vm's graphic output to it. I understand, that I can install desktop on top of proxmox and run spice or rdp in DE, but I don't want the unneeded overhead as I'm going to use this vm not very often, while DE will be consuming host resources all the time. Is there a way to avoid desktop installatin in proxmox while still be able to access vm desktop on the local monitor? May be there is a way to install desktop version of ubuntu or debian in lxc and attach a monitor to this lxc session? Any help would be very much appreciated

Thank you, Dmitry

 

[rdmitry0911]

May be there is a way to install desktop version of ubuntu or debian in lxc and attach a monitor to this lxc session?

I've managed to solve this using this guide. After all I have gnome de and intel gpu acceleration both in lxc and in vm. The final lxc config file looks like this:

root@pve-asrock:~# cat /etc/pve/lxc/115.conf

arch: amd64
cores: 4
hostname: debian
memory: 16384
net0: name=eth0,bridge=vmbr0,hwaddr=EE:0E:B9:F9:9D:A7,ip=dhcp,type=veth
ostype: debian
rootfs: pool:vm-115-disk-0,size=18G
swap: 0
lxc.cgroup2.devices.allow: c 226:* rwm
lxc.cgroup2.devices.allow: c 4:7 rwm
lxc.cgroup2.devices.allow: c 29:0 rwm
lxc.mount.entry: /dev/dri/ dev/dri none bind,optional,create=dir
lxc.mount.entry: /dev/tty7 dev/tty7 none bind,optional,create=file
lxc.mount.entry: /dev/fb0 dev/fb0 none bind,optional,create=file
lxc.cgroup2.devices.allow: c 13:* rwm
lxc.mount.entry: /dev/input dev/input none bind,optional,create=dir
lxc.cgroup2.devices.allow: c 116:* rwm
lxc.mount.entry: /dev/snd dev/snd none bind,optional,create=dir

Just to save time to somebody. To make jalleyfin in lxc to use hardware acceleration, this has to be done inside the container:

chmod 777 /dev/dri/*

Otherwise ffmpeg produces this error during transcoding:

[AVHWDeviceContext @ 0x562349724d80] No VA display found for any default device.
Device creation failed: -22.
Failed to set value 'vaapi=va:,driver=iHD,kernel_driver=i915' for option 'init_hw_device': Invalid argument
Error parsing global options: Invalid argument

 

[alcw]

I have one question before deciding to split my Intel iGPU virtually and I have alder lake i5-1235u.
Say, if I split to 3 vGPU, will there be a cap of the individual vGPU max performance to 1/3 of the iGPU? Or it will dynamically shared the resources?