Intel ARC A310 not supported by Linux Kernel (Ubuntu 24.02 lts)

[darkatek7]

Hello There,

I'm quite clueless. I cannot get my ARC A310 to work on Ubuntu 24.02 lts.
I am using a Mac Mini 2018 with an Razor Core X EGPU Enclosure.

i want to use this setup as media server for av1 encoding/decoding.

I authorized and enrolled to thunderbolt device:
boltctl
● Razer Core X
├─ type: peripheral
├─ name: Core X
├─ vendor: Razer
├─ uuid: ce010000-0090-8f08-2355-0e210cc46924
├─ generation: Thunderbolt 3
├─ status: authorized
│ ├─ domain: c4010000-0070-7c1e-838e-df14a2622922
│ ├─ rx speed: 40 Gb/s = 2 lanes * 20 Gb/s
│ ├─ tx speed: 40 Gb/s = 2 lanes * 20 Gb/s
│ └─ authflags: none
├─ authorized: Mon 03 Mar 2025 06:52:04 PM UTC
├─ connected: Mon 03 Mar 2025 06:52:00 PM UTC
└─ stored: Mon 03 Mar 2025 04:29:52 PM UTC
├─ policy: auto
└─ key: no

the gpu is also recognized by lspci:
spci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-H GT2 [UHD Graphics 630]
02:00.1 Non-VGA unclassified device: Apple Inc. T2 Bridge Controller (rev 01)
02:00.2 Non-VGA unclassified device: Apple Inc. T2 Secure Enclave Processor (rev 01)
46:00.0 VGA compatible controller: Intel Corporation DG2 [Arc A310] (rev 05)

somehow i cannot see the device in /dev/dri
ls /dev/dri
by-path card0 renderD128

Only the igpu shows up...

this is dmesg output for xe and i915:
dmesg | grep xe:
...
[ 11.162043] xe 0000:46:00.0: Your graphics device 56a6 is not officially supported
by xe driver in this kernel version. To force Xe probe,
use xe.force_probe='56a6' and i915.force_probe='!56a6'

and
dmesg | grep i915:
[ 4.331534] i915 0000:00:02.0: [drm] Found COFFEELAKE (device ID 3e9b) display version 9.00 stepping N/A
[ 4.332560] i915 0000:00:02.0: [drm] VT-d active for gfx access
[ 4.332564] i915 0000:00:02.0: vgaarb: deactivate vga console
[ 4.332599] i915 0000:00:02.0: [drm] Using Transparent Hugepages
[ 4.334806] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem
[ 4.336782] i915 0000:00:02.0: [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4)
[ 5.378012] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=none:owns=io+mem
[ 5.475114] i915 0000:00:02.0: [drm] [ENCODER:98:DDI A/PHY A] failed to retrieve link info, disabling eDP
[ 5.476648] mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops [i915])
[ 5.481037] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 0
[ 5.724651] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
[ 5.950566] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 6.204629] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
[ 6.457680] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
use xe.force_probe='56a6' and i915.force_probe='!56a6'

uname -r
6.11.0-17-generic

I also tried multiple kernels. I tried. 6.2, 6.3, 6.11.0 (current), 6.12.6, 6.12.12 and 6.13.5.

I hope anyone can help me with this. I'm quite at a loss here...

I also attached the dmesg log.

thanks a lot!

[JohnM_Intel]

Hello darkatek7.

Thank you for engaging with the community. It appears there might be a compatibility issue with the eGPU setup. I will need some time to investigate this internally. Meanwhile, could you please provide the following information to assist with the investigation:

• Have you tested the eGPU with other systems?
• Are your graphics drivers up to date?
• You mentioned trying different kernel versions. Could you specify which versions you have tested?

Regards,

John Sergio M.

Intel Customer Support Technician

[darkatek7]

I got it working on Windows 11 with the same hardware so yeah. I tested other systems.
Yes i installed all recent drivers!
I tested kernels:  6.2, 6.3, 6.11.0 (current), 6.12.6, 6.12.12 and 6.13.5.

[darkatek7]

dmesg log:
https://bin.darkatek7.com/5z5snSCZB+j.txt

[JohnM_Intel]

Hello darkatek7,

Thank you for letting me know that the issue was resolved using Windows 11. I will continue to investigate this matter further since Intel Arc supports Ubuntu. Please allow me some time to look into this issue.

Regards,

John Sergio M.

Intel Customer Support Technician

[darkatek7]

Thanks a lot!

[JohnM_Intel]

Hello darkatek7,

Thank you for your patience. After completing my investigation, I want to inform you that Intel® Arc™ Discrete Graphics Cards are not designed for use in eGPU configurations. While they may function to some extent, this setup is not officially supported.

To optimize the performance of your graphics card, please refer to the Intel Arc Graphics—Desktop Quick Start Guide.

With that I will now proceed with closing this thread. Thank you and have a great day!

Regards,

John Sergio M.

Intel Customer Support Technician

[darkatek7]

Okay thanks fir letting me know. So which card should i choose then for AV1 enconding in an egpu case?