Arch Linux

emil.s

Member

Registered: 2011-05-22

Posts: 11

Kernel crashes when enabling KMS with intel i915 on Comet UHD Graphics

Hello!

I have an Intel NUC 10 where I have some issues getting the graphics to work.
About 9 of 10 boots, the kernel just crashes very early in the boot process (probably when loading the driver). Since it happens in the initramfs before any disks are mounted I don't have any logs, and the host just reboots.

However, if I disable KMS by adding either `nomodeset` or `i915.modeset=0` to the kernel command line, the host boots fine. But then I'm obviously not getting any proper graphics (seem to get some 800x600 failsafe mode).

I've updated BIOS/UEFI to latest version, it's a fresh installation, and I've tested adding `i915.enable_dc=0 i915.enable_psr=0 i915.enable_guc=0` as well as setting `video=1920x1080@60`. But nothing seem to help.

[root@archlinux emil]# lspci 
00:00.0 Host bridge: Intel Corporation 10th Gen Core Processor Host Bridge/DRAM Registers
00:02.0 VGA compatible controller: Intel Corporation Comet Lake UHD Graphics (rev 04)

Any ideas about how to troubleshoot this further?

Best regards, Emil

Last edited by emil.s (2024-09-27 16:35:17)

gromit

Administrator

From: Germany

Registered: 2024-02-10

Posts: 1,524

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Re: Kernel crashes when enabling KMS with intel i915 on Comet UHD Graphics

On which version does this problem occur? Was it working on some older version?