I'm running Ubuntu 16.04.3, my Unity was crashing in a similar way as it
was originally described in this bug. Installing libgl1-mesa-dri/xenial-
proposed fixed the issue. However, today, I tried to install Steam and
it failed, at least partially, because the system is not being able to
install libgl1-mesa-dri:i386 and libgl1-mesa-glx:i386. This seems to be
related to the installation of libgl1-mesa-dri/xenial-proposed.

These are the messages I see in the terminal when trying to open Steam
for the first time:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libegl1-mesa : Depends: libgl1-mesa-dri (= 17.2.4-0ubuntu1~16.04.4) but it is 
not going to be installed
 libgnome-desktop-3-12 : Depends: libgtk-3-0 (>= 3.9.10) but it is not going to 
be installed
 libqt5svg5 : Depends: libqt5widgets5 (>= 5.3.0) but it is not going to be 
installed
 qtdeclarative5-ubuntu-ui-toolkit-plugin : Depends: qml-module-ubuntu-components
                                           Depends: 
qml-module-ubuntu-performancemetrics
                                           Depends: qml-module-ubuntu-test but 
it is not going to be installed
 ubuntu-system-settings : Depends: libubuntuoneauth-2.0-0 (>= 13.08) but it is 
not going to be installed
                          Depends: powerd (>= 0.15) but it is not going to be 
installed or
                                   gnome-settings-daemon but it is not going to 
be installed
                          Depends: qml-module-qtmultimedia or
                                   qml-module-qtmultimedia-gles but it is not 
going to be installed
                          Depends: qtdeclarative5-ubuntu-content1 but it is not 
going to be installed
                          Recommends: ubuntu-system-settings-online-accounts 
but it is not going to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by 
held packages.

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/1735594

Title:
  [regression] compiz crashes after Mesa upgrade

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1735594/+subscriptions

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