[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[georg]

@William: I know that doesn't help you, but since the update is released
my problems are solved.

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[William Hughes]

I have this problem on two different computers. Different brands and
video cards. Fresh install of Ubuntu 16.04.01, both updated. No Launcher
or Menu bars on screen, just Unity wallpaper/  background. I can left
click access terminal and the screen settings menu, but when I run a
program, no menu bar for the program and desktop is set to place the
menu on the program window.

** Changed in: unity (Ubuntu)
 Assignee: Andrea Azzarone (azzar1) => William Hughes (docbill224)

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Launchpad Bug Tracker]

This bug was fixed in the package unity -
7.4.0+16.04.20160801.2-0ubuntu1

---
unity (7.4.0+16.04.20160801.2-0ubuntu1) xenial; urgency=medium

  [ Andrea Azzarone ]
  * FileManagerLauncherIcon: Don't trust the Quirk::VISIBLE in the ctor.
(LP: #1599133)
  * [TrashLauncherIcon] Create GFileMonitor in an idle to avoid blocking
calls. (LP: #1602720)
  * [LockSceen] Remove numlock warning. (LP: #1526322)
  * Make sure initiate and terminate callbacks are not empty before
calling them. (LP: #1605012)
  * Properly destroy close_button_ to properly disconnect lambda. (LP:
#1605010)
  * Use the standard notification-device-eject in the "device eject"
notification. This allows us to scale it properly on high-dpi
setups. (LP: #1605231)
  * Add tools to enforce unityshell plugin for the current profile and
add "move" and "resize" plugins as requirements. (LP: #1506023, LP:
#1605007, LP: #1604657)

  [ Marco Trevisan (Treviño) ]
  * Unity script: use result from unity_support_test to check the right
COMPIZ_CONFIG_PROFILE to use (LP: #1602377)
  * LockScreenAcceleratorController: ensure callbacks are valid before
calling them (LP: #1605012)

  [ Eleni Maria Stea ]
  * DecoratedWindow: Added shadows for shaped windows (LP: 1608418)

  [ Marco Trevisan (Treviño) ]
  * DecoratedWindow: Cleanup shadows for shaped windows, reduce
recomputation (LP: #1608418)
  * UnityWindowView: don't try to deference close_button_ if its' null

 -- Marco Trevisan (Treviño)   Mon, 01 Aug 2016 13:10:28
+

** Changed in: unity (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Mathew Hodson]

** Changed in: unity (Ubuntu Xenial)
   Importance: Undecided => Critical

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Title:
  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Luke Granlund]

I have tested the proposed packages with success on VM snapshots from
both before and after the issue originally occurred.

I believe I've also tracked down the source of the problem to failing to
upgrade Compiz from "1:0.9.12.2+16.04.20160526-0ubuntu1" to
"1:0.9.12.2+16.04.20160714-0ubuntu1" when Unity was upgraded to
"7.4.0+16.04.20160715-0ubuntu1" (both address low graphics settings)
even though they were published simultaneously.  This is most likely due
to phased updates in Software Updater and the fact that the Unity update
doesn't appear to list the Compiz one as a dependency.  In fact,
http://people.canonical.com/~ubuntu-archive/phased-updates.html reports
that this Compiz update is currently being withheld by Software Updater
due to crashes, while the Unity update is fully rolled out.  This
possibly explains why I saw the issue on an existing VM but not on a
fresh one.

Proposed packages installed:
libunity-core-6.0-9/xenial-proposed 7.4.0+16.04.20160801.2-0ubuntu1
unity/xenial-proposed 7.4.0+16.04.20160801.2-0ubuntu1
unity-schemas/xenial-proposed 7.4.0+16.04.20160801.2-0ubuntu1
unity-services/xenial-proposed 7.4.0+16.04.20160801.2-0ubuntu1

Here are the sequences of updates I applied in testing.

1. Non-working VM -> Upgrade all packages in xenial-updates with apt-get (still 
non-working) -> The proposed updates (Working)
Comment: The problem originally appeared after a Unity update in Software 
updater where unity, but not compiz, was upgraded.  Desktop appeared after 
upgrading to proposed, but I had to re-enable several Unity plugins to avoid 
annoyances.  For example, the "Grid", "Place Windows", and "Snapping Windows" 
plug-ins, which according to CCSM were all enabled before the proposed update, 
were disabled after it.  There may or may not have been other changes, these 
were just the ones I noticed, and perhaps this behavior is expected.

2. VM prior to broken update -> Upgrade all packages in xenial-updates with 
apt-get (working) -> Upgrade to proposed updates (Still working)
Comments: Here unity and compiz are simultaneously upgraded to their mid-July 
versions and the problem I experienced never occurs in the first place.  The 
proposed update doesn't appear to break anything.

3. VM prior to broken update -> Upgrade unity and compiz (and no other 
packages) to most recent in xenial-updates (working)
Comments: Basically as 2, but strongly suggests that May compiz package is 
causing the issue with mid-July unity.

4. Non-working VM -> Upgrade just compiz to most recent package in 
xenial-updates -> Create new user (works)
Comments: Unity seems to work with a new user, but I wasn't able to repair the 
existing user's account without installing the proposed packages.

Taken together I think that using Unity 7.4.0+16.04.20160715-0ubuntu1
with Compiz 1:0.9.12.2+16.04.20160526-0ubuntu1 is almost certainly the
cause of the issue.

No matter the original cause, the proposed
7.4.0+16.04.20160801.2-0ubuntu1 updates restored functionality (with the
minor caveats discussed in point 1) to the non-working VM, and didn't
break a working one.

** Tags removed: verification-needed
** Tags added: verification-done

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Title:
  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Chris J Arges]

Hello Luke, or anyone else affected,

Accepted unity into xenial-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/unity/7.4.0+16.04.20160801.2-0ubuntu1
in a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed.  Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Changed in: unity (Ubuntu Xenial)
   Status: New => Fix Committed

** Tags added: verification-needed

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Title:
  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Martin Pitt]

** Also affects: unity (Ubuntu Xenial)
   Importance: Undecided
   Status: New

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Treviño]

** Changed in: unity (Ubuntu)
   Status: In Progress => Fix Released

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Treviño]

** Changed in: unity (Ubuntu)
 Assignee: (unassigned) => Andrea Azzarone (azzar1)

** Changed in: unity (Ubuntu)
   Status: Confirmed => In Progress

** Branch linked: lp:~azzar1/unity/unity-active-plugins--safety-check

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[georg]

I can confirm the issue, same happens here:

* Ubuntu 16.04 64 Bit running in a VirtualBox under Windows 7
* after upgrade of libunity-core the launcher and panels are missing
* the unity daemons are running
* it isn't related to any user settings, I also reproduced it with a new user 
and empty home directory
* starting ``unity -v`` brings back the panel and launcher temporarily

These are the packages after which installation things broke (apt
history log):

Upgrade: unity-schemas:amd64 (7.4.0+16.04.20160526.1-0ubuntu1,
7.4.0+16.04.20160715-0ubuntu1), libunity-protocol-private0:amd64
(7.1.4+15.10.20151002-0ubuntu2, 7.1.4+16.04.20160701-0ubuntu1),
unity:amd64 (7.4.0+16.04.20160526.1-0ubuntu1,
7.4.0+16.04.20160715-0ubuntu1), unity-services:amd64
(7.4.0+16.04.20160526.1-0ubuntu1, 7.4.0+16.04.20160715-0ubuntu1),
libunity-core-6.0-9:amd64 (7.4.0+16.04.20160526.1-0ubuntu1,
7.4.0+16.04.20160715-0ubuntu1), libunity9:amd64
(7.1.4+15.10.20151002-0ubuntu2, 7.1.4+16.04.20160701-0ubuntu1)

Please let me know if you need additional logs.

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: unity (Ubuntu)
   Status: New => Confirmed

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Luke Granlund]

Having a chance to look at things more closely, Unity definitely appears
to be running.  (By this I mean compiz started with the Unity plugin,
and unity-panel-service is running.)  Running unity from the command-
line stops and restarts everything, but the desktop remains blank.

However, running unity -v (according to the source for unity.cmake this
calls compiz with --debug) *does* restore things.  I've also gotten a
desktop by running compiz --replace.  Issues persist upon rebooting,
however.  As previously mentioned, this includes steps like deleting
.cache and .config, resetting things in dconf, and other standard
workarounds for blank desktop issues.  I also tried purging and
reinstalling essentially the entire graphical stack, without success.
That suggests the issues might be with the default settings, yet they
don't show up on a fresh 16.04 installation on the same platform.

I'm stumped and migrating to fresh VMs.  I'll keep a copy of the
troublesome VM around for a few months in case the issue is confirmed or
someone has a bright idea.

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Luke Granlund]

The after (non-working) log.

** Attachment added: "unity7.after.log"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1604657/+attachment/4704151/+files/unity7.after.log

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Luke Granlund]

If Unity is running it's being very shy.  I have the same problem on a
different machine using a VM cloned from this one several weeks ago.  A
VM with a fresh install of 16.04 LTS works fine with the new packages
for me, so perhaps this is a unique configuration issue.  However, other
than experimenting with launcher placement and turning low graphics
on/off I haven't tweaked Unity settings to my recollection.  I've
noticed that CCSM when run from console (DISPLAY=:0 ccsm &) appears to
hang at "Loading icons...", which may point in the right direction.

I have Hyper-V checkpoints immediately before and after installing the
packages that break things for me, so I should be able to investigate
any before/after question that might help.

To answer your specific questions, there are no dumps in /var/crash.
I've attached before (working) and after (non-working) unity7 logs.
I've generated them by restarting the VM from the aforementioned states
and logging on, so the times in the logs might look inconsistent.

** Attachment added: "unity7.before.log"
   
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1604657/+attachment/4704149/+files/unity7.before.log

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Treviño]

It seems unity is not runing at all, isn't it?

Is there anything in /var/crashes/ mentioning compiz?

Also what's in ~/.cache/upstart/unity7.log

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Steve Langasek]

** Changed in: unity (Ubuntu)
   Importance: Undecided => Critical

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  [Regression] Unity shows blank desktop with software renderer

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[Bug 1604657] Re: [Regression] Unity shows blank desktop with software renderer

[Luke Granlund]

** Description changed:

- [Regression]Unity shows blank desktop with software renderer
- 
  [Summary]
  Ubuntu 16.04 LTS shows blank desktop under software renderer (llvmpipe) after 
updates to improve low graphics mode. (LP: #1598770)
  
  [Expected]
  Unity Desktop
  
  [Actual]
  Unity wallpaper and not much else.  Launcher and panel missing, windows are 
immobile, no task switching. Right-click context menu works and can open 
terminal.
  
  [Additional]
  Observed on Ubuntu guest VM running on Windows 10 Pro host (Hyper-V). 
Resetting unity and compiz settings doesn't seem effective.  The problem occurs 
whether low graphics mode is enabled in CCSM or not.
  
  Problem appeared after completing following update
  --
  Changes for libunity-core-6.0-9 versions:
  Installed version: 7.4.0+16.04.20160526.1-0ubuntu1
  Available version: 7.4.0+16.04.20160715-0ubuntu1
  
  Changes for unity-settings-daemon versions:
  Installed version: 15.04.1+16.04.20160209-0ubuntu2
  Available version: 15.04.1+16.04.20160701-0ubuntu1
  
  Changes for libunity-settings-daemon1 versions:
  Installed version: 15.04.1+16.04.20160209-0ubuntu2
  Available version: 15.04.1+16.04.20160701-0ubuntu1
  
  Changes for unity versions:
  Installed version: 7.4.0+16.04.20160526.1-0ubuntu1
  Available version: 7.4.0+16.04.20160715-0ubuntu1
  
  Changes for unity-schemas versions:
  Installed version: 7.4.0+16.04.20160526.1-0ubuntu1
  Available version: 7.4.0+16.04.20160715-0ubuntu1
  
  Changes for unity-services versions:
  Installed version: 7.4.0+16.04.20160526.1-0ubuntu1
  Available version: 7.4.0+16.04.20160715-0ubuntu1
  
  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: unity 7.4.0+16.04.20160715-0ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  .tmp.unity_support_test.1:
-  
+ 
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Tue Jul 19 22:35:43 2016
  DistUpgraded: Fresh install
  DistroCodename: xenial
  DistroVariant: ubuntu
  GraphicsCard:
-  
+ 
  GsettingsChanges:
-  b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl', 
'resize', 'compiztoolbox', 'regex', 'move', 'grid', 'place', 'snap', 'wall', 
'imgpng', 'copytex', 'mousepoll', 'vpswitch', 'commands', 'animation', 
'unitymtgrabhandles', 'expo', 'session', 'fade', 'workarounds', 'ezoom', 
'scale', 'unityshell']"
-  b'com.canonical.Unity' b'minimize-count' b'19'
-  b'com.ubuntu.user-interface' b'scale-factor' b"{'default': 8}"
-  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
-  b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
+  b'org.compiz.core' b'active-plugins' b"['core', 'composite', 'opengl', 
'resize', 'compiztoolbox', 'regex', 'move', 'grid', 'place', 'snap', 'wall', 
'imgpng', 'copytex', 'mousepoll', 'vpswitch', 'commands', 'animation', 
'unitymtgrabhandles', 'expo', 'session', 'fade', 'workarounds', 'ezoom', 
'scale', 'unityshell']"
+  b'com.canonical.Unity' b'minimize-count' b'19'
+  b'com.ubuntu.user-interface' b'scale-factor' b"{'default': 8}"
+  b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
+  b'org.gnome.desktop.interface' b'scaling-factor' b'uint32 1'
  InstallationDate: Installed on 2016-04-25 (85 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 
(20160420.1)
  Lspci:
-  
+ 
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  MachineType: Microsoft Corporation Virtual Machine
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic.efi.signed 
root=UUID=8b0b0ff2-67f8-496f-b77b-7a50811fe8bf ro quiet splash vt.handoff=7
  Renderer: Software
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/26/2012
  dmi.bios.vendor: Microsoft Corporation
  dmi.bios.version: Hyper-V UEFI Release v1.0
  dmi.board.asset.tag: None
  dmi.board.name: Virtual Machine
  dmi.board.vendor: Microsoft Corporation
  dmi.board.version: Hyper-V UEFI Release v1.0
  dmi.chassis.asset.tag: 3900-4772-8270-5512-4576-1749-75
  dmi.chassis.type: 3
  dmi.chassis.vendor: Microsoft Corporation
  dmi.chassis.version: Hyper-V UEFI Release v1.0
  dmi.modalias: 
dmi:bvnMicrosoftCorporation:bvrHyper-VUEFIReleasev1.0:bd11/26/2012:svnMicrosoftCorporation:pnVirtualMachine:pvrHyper-VUEFIReleasev1.0:rvnMicrosoftCorporation:rnVirtualMachine:rvrHyper-VUEFIReleasev1.0:cvnMicrosoftCorporation:ct3:cvrHyper-VUEFIReleasev1.0:
  dmi.product.name: Virtual Machine
  dmi.product.version: Hyper-V UEFI Release v1.0
  dmi.sys.vendor: Microsoft Corporation
  version.compiz: compiz 1:0.9.12.2+16.04.20160526-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: