Public bug reported:
Under the Ubuntu 24.04 LTS Server for Raspberry Pi image, with a Pi 5
8GB model (C1 stepping, but worth checking D0 too), the official 7" DSI
touchscreen fails to display any output. This is with the stock server
configuration, but persists when:
* the KMS overlay is commented out
* disable_fw_kms_setup=1 is commented out
* video=DSI-1:800x480M@60 is prefixed to the kernel command line
(or any combination of the above)
Curiously, the DSI display *does* work under the Desktop image.
We have also attempted installing ubuntu-desktop and ubuntu-raspi-
settings-desktop under the Server image with no change, and have
verified that the /etc/X11/xorg.conf.d/99-v3d.conf is created, although
seemingly *not* with DSI-relevant settings in it because /dev/dri/by-
path/*-card does not exist.
This *may* be a kernel issue, but I'm hesitant to believe that given the
desktop image (which shares a kernel with the server) *does* work. My
current suspicion is that we're missing *something* in the boot
configuration, but I'm awaiting delivery of a MIPI-DSI adapter cable to
replicate and debug this.
** Affects: ubuntu
Importance: Undecided
Assignee: Dave Jones (waveform)
Status: New
** Affects: Ubuntu Noble
Importance: Undecided
Assignee: Dave Jones (waveform)
Status: New
** Tags: foundations-todo
** Changed in: ubuntu
Assignee: (unassigned) => Dave Jones (waveform)
** Also affects: Ubuntu Noble
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2102019
Title:
DSI touchscreen fails to display anything on Pi 5 with Ubuntu Server
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+bug/2102019/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
