Public bug reported:
SRU Justification
[Impact]
With the patches from EDATEC applied to the Ubuntu r/linux-raspi kernel,
the display works on the 10" display but shows a black screen on for the
7" display. EDATEC determined this to be caused by the missing panel-dsi
fixes that happened recently. Applying the missing fixes solves the
issue.
[Fix]
Pull the fix from upstream Raspberry Pi tree (rpi-7.0.y branch):
- 1992e3568d0a0 drm/panel-simple: Fix handling of panel-dsi
[Test Plan]
* Compile tested
* Boot tested
* No impacts to existing features found
Install the built packages and the correct config.txt, reboot the
machine and the 7" display should now show actual graphics instead of
just a backlight. The first thing visible should be the boot logo.
[Regression potential]
Relatively low, as change is a bug fix from upstream.
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2156861
Title:
Raspberry Pi CM5: EDATEC 7" display shows black screen
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