Comment 2 for bug 1715350

Ok, this looks really strange:

dak@lola:/usr/local/tmp/lilypond$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages will be upgraded:
  libxvmc1
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/13.7 kB of archives.
After this operation, 19.5 kB disk space will be freed.
Do you want to continue? [Y/n]
(Reading database ... 353836 files and directories currently installed.)
Preparing to unpack .../libxvmc1_2%3a1.0.10-1_amd64.deb ...
Unpacking libxvmc1:amd64 (2:1.0.10-1) over (2:1.0.9-1ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/libxvmc1_2%3a1.0.10-1_amd64.deb (--unpack):
 trying to overwrite shared '/etc/X11/XvMCConfig', which is different from other instances of package libxvmc1:amd64
Errors were encountered while processing:
 /var/cache/apt/archives/libxvmc1_2%3a1.0.10-1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
dak@lola:/usr/local/tmp/lilypond$ dpkg -S !$
dpkg -S /etc/X11/XvMCConfig
libxvmc1:i386: /etc/X11/XvMCConfig
dak@lola:/usr/local/tmp/lilypond$ sudo apt-get remove libxvmc1:i386
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'libxvmc1:i386' is not installed, so not removed. Did you mean 'libxvmc1'?
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
dak@lola:/usr/local/tmp/lilypond$ cat /etc/X11/XvMCConfig
libXvMC.so.1
dak@lola:/usr/local/tmp/lilypond$