Public bug reported:
-- BACKGROUND info -- (ie. skip!)
I upgraded to 18.04 last night from 17.10 (Ubuntu with GNOME, but also XFCE &
MATE DEsktops were installed). I logged in last night & noticed nothing
unusual (slow login, crash & apport bug report made [duplicate]). Otherwise
upgrade was perfect. Last night I only used MATE.
-- END background
Today I logged into GNOME (first login since upgrade), my screen config
was changed (as if side-by-side) so I altered to match my config - and
now on top (secondary) screen left side of screen I get this few pixel
wide graphic 'bar' type glitch.
It alters with screen-draws; having minimal movement is nothing on
screen is drawing. If you move mouse it jumps more, if you move windows
the movement is even more - when I start music (audacious) which has a
graphic audio metre (dancing with music) I get lots of activity on the
glitch-bar.
If I move audacious below (top) screen it still acts as if on screen (my
screen placement i think is reason for this), but if I minimize the
window the glitch has minimal movement, likewise if I move audacious to
lower (primary) screen and move the bar off display.
As stated, the vertical-graphic-lines-glitch appears to be related to
movement or redrawing of stuff on screen. If I stop music and have
~everything static but type into the `hexchat` screen on the bottom, the
vertical-graphic-lines-glitch jumps on each keypress (or its being
written to screen). If i hit random keys quickly the jumping movement
is faster than slow keypresses
If I make no movements, glitch still has movement; maybe 2-4 moves per
second., but a fraction of the 'jumps' (or movement) of when there is
graphic movement.
OF NOTE: As I type this into chromium, the 'glitch' is the smallest its
been and NOT moving to each keystroke which is different behavior to
terms, hexchat etc.
This behavior is only evident in GNOME.
guiverc@d960-ubu2:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Bionic Beaver (development branch)
Release: 18.04
Codename: bionic
guiverc@d960-ubu2:~$ sudo lshw -C video
*-display
description: VGA compatible controller
product: Cedar [Radeon HD 5000/6000/7350/8350 Series]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:30 memory:e0000000-efffffff memory:f7de0000-f7dfffff
ioport:dc00(size=256) memory:c0000-dffff
guiverc@d960-ubu2:~$ sudo apt-cache policy gnome-session
gnome-session:
Installed: (none)
Candidate: 3.28.1-0ubuntu2
Version table:
3.28.1-0ubuntu2 500
500 http://ftp.iinet.net.au/pub/ubuntu bionic/universe amd64 Packages
500 http://au.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages
For a bad video of what I see/mean - see
https://www.youtube.com/watch?v=e5KA1as_lVA
(if it wasn't mostly white & bright-blue bars - it'd be less annoying)
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome (not installed)
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
ApportVersion: 2.20.9-0ubuntu5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Apr 21 13:59:30 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-11-16 (156 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
SourcePackage: meta-gnome3
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: meta-gnome3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
** Attachment added: "video (also on utube) attempting to show glitch (and
music playing causing more movement)"
https://bugs.launchpad.net/bugs/1765897/+attachment/5124688/+files/Ubuntu%2018.04%20bug%20info-e5KA1as_lVA.mp4
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https://bugs.launchpad.net/bugs/1765897
Title:
vertical graphic lines glitch (on secondary top monitor)
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