Public bug reported:
Note: I am not sure if this is an issue with unity, with compiz, or with
some other component such as dbus, or if it is multiple bugs.
At work I use a bridged network interface (br0) over eth0 on my laptop
to seamlessly connect my laptop and its virtual machines to the
corporate network. As Network Manager cannot handle bridged
connections, I am forced to use the old /etc/network/interfaces file to
configure the bridge. (Note that I removed all network manager entries
that reference eth0 before creating the bridge.)
This setup worked fine in 12.04 and earlier versions. I was able to
reconfigure the bridge (when necessary) and restart it using the command
line without issue using those releases. When my computer is booted
with the bridged configuration, 12.10 uses the bridge to connect to the
network without issue. The problem occurs only when I restart
networking.
In 12.10, issuing the command "sudo service networking restart" or "sudo
/etc/init.d/networking restart" causes Unity to instantly and completely
die. The compiz window manager decorations disappear and do not
restart, keyboard shortcuts do not work, services such as bluetooth
become unresponsive. Existing windows remained (without window manager
decoration) on the screen, but appeared hung. With a USB mouse I was
able to move the mouse and right click to open menus, but they were
unresponsive to clicks. I was unable to do anything in Unity to correct
the situation. I was able to switch to a virtual terminal (Ctrl+Alt+F1)
and log in to the command line. From there I was able to restart the
computer.
I have been able to replicate this consistently.
I am attaching my .xsession-errors file. Note that the entries up to
and including line 110 were made before issuing the network restart
command. Entries after 110 resulted from issuing the command.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.8.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
CompizPlugins:
[core,bailer,detection,composite,opengl,copytex,compiztoolbox,decor,move,gnomecompat,vpswitch,dbus,place,regex,imgsvg,mousepoll,snap,imgpng,resize,wall,animation,unitymtgrabhandles,session,resizeinfo,fade,expo,workarounds,ezoom,scale,unityshell]
Date: Wed Oct 24 10:31:16 2012
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: unity
UpgradeStatus: Upgraded to quantal on 2012-10-22 (1 days ago)
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug quantal running-unity
** Attachment added: "My .xsession-errors file. Lines after 110 were the
result of restarting networking."
https://bugs.launchpad.net/bugs/1070879/+attachment/3411800/+files/SAVEDxsession-errors
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https://bugs.launchpad.net/bugs/1070879
Title:
Calling "service networking restart" kills unity
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