Public bug reported:
Ubuntu MATE live QA-test on
- hp 8200 elite sff (i5-2400, 8gb, nvidia quadro 600)
another check for
My display setup is strange (one monitor above the other), so using the
Displays area of Ubuntu-MATE Control Center to adjust, I drag the
location of one relative to the other to where it should be for my
setup.
** Expected results
I expect the Monitor.Preferences to show show ghost-images, and clicking
APPLY I expect the display orientation to adjust to the changed setup,
and both displays to be readable, static & usable.
** Actual results
On dragging one relative to the other, the Monitor.Preferences image is
showing a trail of where it was dragged like solitaire years ago (on
another OS) when you 'won'.. Not expected
On clicking Apply
- my.top monitor is perfectly clear & usable
- the displays are orientated correctly relative to one another
- my.bottom display is now unusable/unreadable as it's a constant
changing/flashing mess
Dragging windows on my.lower display now leave trails (on desktop), the
flashing/changing (strobe-like) could be a problem for some health
conditions possibly (seizure?), but it's very annoying (it's occurring
on what I consider my primary monitor when I'm seated as I am
currently).
** More detail/testing
Strange - on closing Monitor.Preferences window, and re-opening it
again.. my.lower monitor stopped it's flashing/changing images & became
fully readable & usable.
Adjusting the screen.location in Control.Centre.Displays again still
leave trails in the "Monitor Preferences" window, but that is easily
ignored as it's only used once (or a few times) as its operation was
effective anyway.
ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: mate-control-center 1.26.0-0ubuntu1
ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13
Uname: Linux 5.13.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu69
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465
CurrentDesktop: MATE
Date: Thu Sep 23 02:44:52 2021
LiveMediaBuild: Ubuntu-MATE 21.10 "Impish Indri" - Beta amd64 (20210922)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: mate-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: mate-control-center (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug impish
** Attachment added: "dmesg.txt"
https://bugs.launchpad.net/bugs/1944661/+attachment/5527154/+files/dmesg.txt
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https://bugs.launchpad.net/bugs/1944661
Title:
changing screen positions (mate-control-center.displays) caused one
display to become unreadable/unusable
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