[Bug 2084046] Re: [i915] Phantom "Unknown" display detected on Intel Meteor Lake

Hi Justus,

The test kernel finished building. I built a 6.8 kernel for Noble and a 6.11
kernel for Oracular. It uses the same patches that the Kernel Team has applied
to their git tree.

Please note this package is NOT SUPPORTED by Canonical, and is for TESTING
PURPOSES ONLY. ONLY Install in a dedicated test environment.

Instructions to Install (On a mantic system):
1) sudo add-apt-repository ppa:mruffell/lp2084046-test
2) sudo apt update
On Noble:
3) sudo apt install linux-image-unsigned-6.8.0-51-generic linux-modules-6.8.0-51-generic linux-modules-extra-6.8.0-51-generic linux-headers-6.8.0-51-generic
Or on Oracular:
3) sudo apt install linux-image-unsigned-6.11.0-13-generic linux-modules-6.11.0-13-generic linux-modules-extra-6.11.0-13-generic linux-headers-6.11.0-13-generic
4) sudo reboot
5) uname -rv
Look for +TEST2084046v20250113b1

Does it solve the phantom display issue? Let me know if it does.

Thanks,
Matthew

--
You received this bug notification because you are subscribed to linux
in Ubuntu.
Matching subscriptions: Bgg, Bmail, Nb
https://bugs.launchpad.net/bugs/2084046

Title:
[i915] Phantom "Unknown" display detected on Intel Meteor Lake

Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Noble:
Fix Committed
Status in linux source package in Oracular:
Fix Committed

Bug description:
Settings is reporting a second display ("Unknown") is connected. This
is on a laptop which has nothing plugged in and only an Intel GPU.

It appears the problem is once again (like bug 2060268) SimpleDRM:

Node: /dev/dri/card0
├───Driver: simpledrm (DRM driver for simple-framebuffer platform devices) version 1.0.0 (0)
--
Node: /dev/dri/card1
├───Driver: i915 (Intel Graphics) version 1.6.0 (0)

Linux version 6.11.0-8-generic (buildd@lcy02-amd64-042) (x86_64-linux-
gnu-gcc-14 (Ubuntu 14.2.0-4ubuntu2) 14.2.0, GNU ld (GNU Binutils for
Ubuntu) 2.43.1) #8-Ubuntu SMP PREEMPT_DYNAMIC Mon Sep 16 13:41:20 UTC
2024 (Ubuntu 6.11.0-8.8-generic 6.11.0)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2084046/+subscriptions