On Sun, Mar 04, 2018 at 10:01:23PM +0000, Long Wind wrote: > there is a typo in my last post: not -> now > the cause might be i use installation CD 9.3.0but now apt source is newest > (ftp.utexas.edu) > > On Sunday, March 4, 2018 4:55 PM, Long Wind <longwi...@yahoo.com> wrote: > > > the cause might be i use installation CD 9.3.0but not apt source is newest > (ftp.utexas.edu) > below is error msg of "apt-get install mplayer"is it possible to fix it? > Thanks! > > Reading package lists... > Building dependency tree... > Reading state information... > 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: > mplayer : Depends: libavcodec57 (>= 7:3.2.2) but it is not going to be > installed or > libavcodec-extra57 (>= 7:3.2.2) but it is not going to be > installed > Depends: libavformat57 (>= 7:3.2.2) but it is not going to be > installed > Depends: libswresample2 (>= 7:3.2.2) but it is not going to be > installed > E: Unable to correct problems, you have held broken packages. > > > Do apt update && apt upgrade as root, and see what it wants to do. You don't have to let it do it -- you can answer N when it asks for confirmation on the upgrade -- but you can see if it wants to upgrade a ton of packages. If it does, my suggestion would be to let it do so and then try the installation again.
The issue could be that it still thinks something is in the repository with a dependency on an older version of one of those libraries, and you need to update its understanding for it to see how it can fulfill your request to install mplayer. If that doesn't help then you need to look closely at the libraries mplayer depends on and see if you have something pinning an older version of them or a conflict preventing them from being installed. I don't recall if apt has a why / why-not command, but aptitude does -- one early step would be to let the system tell you why it can't install the dependencies of mplayer. Note your error message complained about all of them, but it only takes one to actually have a problem, so check them all. HTH Mark
