[Bug 284325] Re: libpng3 symlink points to the wrong directory

davec 284325 at bugs.launchpad.net
Wed Aug 3 18:46:59 UTC 2011


The last update to libpng3 in Lucid release on 28/7/2011 to version
1.2.42 appears to have caused this same problem.  According to the
package install log, the install completed successfully and the libpng3
package status is reported as installed OK.

The result in this case was to break my Canon MP600 printer driver, and
produce completely misleading syslog entries which made it a real $%* to
find.

Why was 1.2.42-lubuntu2.2 installed when this was fixed in 1.2.44 months
ago?

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https://bugs.launchpad.net/bugs/284325

Title:
  libpng3 symlink points to the wrong directory

Status in “libpng” package in Ubuntu:
  Fix Released
Status in “libpng” package in Debian:
  Fix Released

Bug description:
  Binary package hint: libpng12-0

  I've just installed the drivers for my Canon Pixma MP160 printer-
  scanner from the Canon website.  The drivers are in .rpm format, which
  I converted to .deb with Alien.

  When I ran the scanner program, it failed, citing a missing library.
  I fixed the problem by creating a symlink from /usr/lib/libpng.so.3 to
  /usr/lib/libpng12.so.0.27.0.  The program now works perfectly.

  The libpng12-2 package already installs a symlink from
  /usr/lib/libpng12.so.0 to /usr/lib/libpng12.so.0.27.0.  It would be
  good if the symlink that I created could be in that package by default
  too.  Then other Canon users won't have the same problem.

  Unless this would create a conflict with some other program, I think
  it should be implemented in Intrepid before the end of the month.  I'm
  pretty sure that I used these same drivers on Hardy without tweaking,
  so I suppose that the symlink must have been removed from the Intrepid
  version.  (I haven't checked.)

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