On Tue, 20 Mar 2018 13:42:24 -0500 David Wright <deb...@lionunicorn.co.uk> wrote:
> On Tue 20 Mar 2018 at 13:47:42 (-0400), Dan Norton wrote: > > On Tue, 20 Mar 2018 12:59:21 -0400 > > Greg Wooledge <wool...@eeg.ccf.org> wrote: > > > > > On Tue, Mar 20, 2018 at 12:18:05PM -0400, Dan Norton wrote: > > > > > * The output of "apt policy ffmpeg". > > > > > > > > ffmpeg: > > > > Installed: 7:3.2.10-1~deb9u1 > > > > Candidate: 7:3.2.10-1~deb9u1 > > > > Version table: > > > > *** 7:3.2.10-1~deb9u1 500 > > > > 500 http://debian.gtisc.gatech.edu/debian stretch/main > > > > amd64 Packages > > > > 500 http://security.debian.org/debian-security > > > > stretch/updates/main amd64 Packages > > > > 100 /var/lib/dpkg/status > > > > > > > > > * The output of "aptitude why libopenal1". > > > > > > > > i ffmpeg Depends libavdevice57 (>= 7:3.2.10) > > > > i A libavdevice57 Depends libopenal1 (>= 1.14) > > > > > > >From these, it looks like you have the stretch version of ffmpeg, > > > >and > > > a libopenal1 dependency that can be satisfied by the stretch > > > version of libopenal1. > > > > > > If libopenal1 is not actually installed, then something is very > > > wrong. Is it possible that you have the package "installed", but > > > something else removed the library file? In that case, just > > > reinstall the package: > > > > > > apt-get --reinstall install libopenal1 > > > > > > > That did it - thanks, Greg! > > > > But what does this do that apt purge/install of ffmpeg does not? > > You posted: > > # apt purge ffmpeg > # apt autoremove > # apt install ffmpeg > > but you didn't show your working. You should check out what happened > by looking at /var/log/apt/history.log to see if libopenal1 was > affected by this command sequence. For a start, other packages might > depend on libopenal1, preventing its auto-removal. > The broken system was installed in December 2017. Looking at all the logs in /var/log/apt/history* (extracting the ones that were archived) and running: dan@deb9:~/apt.logs$ grep -rnw '.' -e 'libopenal1' | less ...there is one hit, other than today's --reinstall and that is an install: Start-Date: 2017-12-17 21:29:03 Commandline: /usr/sbin/synaptic Requested-By: dan (1200) Install: [...] libopenal1:amd64 (1:1.17.2-4+b2, automatic), # e pluribus unum [...] > Then of course there's the investigation of why it wasn't > installed correctly in the first place, and what was happening > during the "several attempts" at installing ffmpeg. > Apparently nothing during these attempts involved libopenal1, according to the logs in /var/log/apt/ - is there anywhere else that could shed light on this? - Dan
