plugins bailer and detection enabled after upgrade causing screen flickering and corruption
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
unity (Ubuntu) |
New
|
High
|
Canonical Desktop Experience Team | ||
Precise |
New
|
High
|
Canonical Desktop Experience Team |
Bug Description
Oneiric to Precise upgrade
This is one instance of bug 963633 but I file it separately to avoid the confusion of the forementioned bug that is accumulating possible different causes.
TEST CASE:
1. Install a fresh Oneiric and apply updates
2. Change some settings to make sure they are preserved on upgrade (background, trackpad settings, ...)
3. Upgrade to Precise:
$ update-manager -d
4. Proceed with the upgrade and reboot
5. Login
ACTUAL RESULT:
The screen is flickering, there is massive display corruption, a black strip appears below the panel.
unity --reset fixes the problem
Comparing the configuration after upgrade and after the reset shows that the plugins bailer and detection were active and disabling thme fixes the issue.
Here is the list of plugins active after upgrade (in that order):
core
bailer
detection
composite
opengl
compiztoolbox
decor
snap
imgpng
resize
move
unitymtgrabhandles
regex
mousepoll
grid
vpswitch
animation
gnomecompat
expo
place
wall
fade
workarounds
session
scale
ezoom
unityshell
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.8.0-0ubuntu1
ProcVersionSign
Uname: Linux 3.2.0-20-generic i686
.tmp.unity.
ApportVersion: 1.95-0ubuntu1
Architecture: i386
CompizPlugins: [core,composite
CompositorRunning: compiz
Date: Mon Mar 26 22:19:29 2012
DistUpgraded: 2012-03-26 21:42:05,815 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20111009)
MachineType: Dell Inc. Inspiron N4010
ProcEnviron:
TERM=xterm
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-03-26 (0 days ago)
dmi.bios.date: 01/19/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 021CN3
dmi.board.vendor: Dell Inc.
dmi.board.version: A11
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Inspiron N4010
dmi.product.
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.2-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.
version.
version.
version.
version.
version.
version.
version.
This bug has been reported on the Ubuntu ISO testing tracker.
A list of all reports related to this bug can be found here: iso.qa. ubuntu. com/qatracker/ reports/ bugs/965677
http://