Public bug reported:
The last system update to 24.04 has totally stuffed the video display
handling.
Now 24.04 doesn't see my M5000M graphics adapter most of the time. When
it does it won't configure the video output correctly. The screen is 99%
white with a hint of a Ubuntu top of screen status bar showing. (see
attached photo).
Sometimes the display is top 30% all white and the rest black.
In one case the sync rate setting was incorrect but changing it back to
100Hz failed to solve the problems.
This new bug is in addition to the suspend\hibernation problem when
starting up 24.04 with the laptop lid shut. In this instance I normally
lift the lid slightly to get the laptop to wake up again and upon
closing the lid I used to get the Ubuntu GUI displayed on the ext
monitor. This behavior no longer occurs, i.e. the ext monitor ends up
black or white as described above. Sometimes even the laptop internal
graphics adapter shows a totally black screen as well.
In one case I had to totally power down my ext monitor because it had
got so screwed up by 24.04 that even if I booted into Windows 10, Win10
failed to detect\use the monitor!
Dell M6700 laptop running on a E-Port II docking station with ext USB
keyboard and IIYama DP widescreen monitor set to 100hx 3440x1440
resolution.
Ubuntu 22.04.5 LTS works perfectly on my hardware setup.
Attached photos of the external monitor screen display.
** Affects: ubuntu
Importance: Undecided
Status: New
** Attachment added: "monitor display"
https://bugs.launchpad.net/bugs/2098842/+attachment/5858745/+files/20250219_101712.jpg
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https://bugs.launchpad.net/bugs/2098842
Title:
Last 24.04 update totally stuffed GUI display adapters
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