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I've recently re-installed my system as 64-bit, and am currently trying to get the Android SDK up. One of the packages required is libsdl1.2debian:i386. Trying to naively install this caused apt-get to try and uninstall most of the OS. Eventually I figured out, with some careful aptitude work, that the problem can be solved by downgrading a point-release on the 64-bit libasound2 and libgcrypt11 packages. For example, the version of libasound2 installed was 1.0.25-1ubuntu10.1, whereas the latest :i386 version was 1.0.25-1ubuntu10. Now, when trying to update my system, it claims everything is up-to-date, and there is no sign of the newer packages... what's going on? This should be handled better in some way...

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Do you have the ia32-libs package installed? – Aaron Hill Jul 14 '12 at 13:20
@Aaron, that problem occurs when trying to install it. Also, it turns out that the problem originated from installing the <tt>tikhonov-misc-precise</tt> PPA packages (in an attempt to fix the blue flash player tint issue). – lutzky Jul 14 '12 at 13:24

Turns out that the issue originated from installing various PPAs, such as tikhonov-misc-precise. This installs slightly-more-updated packages for AMD64, which breaks :i386 packages which require an identical version.


  1. Remove the PPAs
  2. Install aptitude
  3. Using aptitude, try to install the ia32-libs package - many packages will break.
  4. Use the b key to find broken packages. At the bottom of the package details page in aptitude, available packages will be shown. If an older one is available - install it (using i).
  5. When you're all done, only ubuntu-official packages should be installed, and you should be good to go.

I wish it weren't this complicated... recovering from a bad PPA seems to be quite a pain.

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