'Installing breakpad exception handler for appid(steam)' while trying to run Steam

I installed steam for ubuntu , so I tried to launch it and i get this :

~$ steam
Installing breakpad exception handler for appid(steam)/version(1352224866_client)

~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 12.10
Release:    12.10
Codename:   quantal


~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Whistler XT [AMD Radeon HD 6700M Series] (rev ff)

What is the problem and how to fix it?

Install ia32-libs:

sudo apt-get install ia32-libs

Steam needs a lot of 32 bit libraries from your system. If any of these are missing, the Steam executable will crash.

On openSUSE you can check what package provides a specific library with the command zypper wp libpng12.so.0.

On Ubuntu there is no such an easy way, but this site explains the process above quite well.

The full list required for starting Steam:

    libGL.so.1
    libX11.so.6
    libXau.so.6
    libXext.so.6
    libXi.so.6
    libXrandr.so.2
    libXrender.so.1
    libappindicator.so.1
    libasound.so.2
    libc.so.6
    libcairo.so.2
    libdbus-1.so.3
    libdl.so.2
    libfontconfig.so.1
    libfreetype.so.6
    libgcc_s.so.1
    libgdk-x11-2.0.so.0
    libgdk_pixbuf-2.0.so.0
    libglib-2.0.so.0
    libgobject-2.0.so.0
    libgtk-x11-2.0.so.0
    libm.so.6
    libnspr4.so
    libnss3.so
    libnssutil3.so
    libpango-1.0.so.0
    libpangocairo-1.0.so.0
    libpangoft2-1.0.so.0
    libplc4.so
    libpng12.so.0
    libpthread.so.0
    librt.so.1
    libsmime3.so
    libstdc++.so.6
    libsteam.so
    libxcb.so.1
    libz.so.1

If you want to find out quickly what is missing, run the following command:

strace -E LD_LIBRARY_PATH=/home/USERNAME/Steam/ubuntu12_32/ -e trace=open /home/USERNAME/Steam/ubuntu12_32/steam (replace USERNAME twice with your account name on your Linux)

It will give you an output something like this in one of the last lines:

open("/home/user/Steam/ubuntu12_32/libspeex.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)

If there is no line after which doesn't mention ENOENT, you will have to search which package provides the shared library (libspeex.so.1 in this case) according to the tutorial above.

LANG=C LD_LIBRARY_PATH=${HOME}/Steam/ubuntu12_32 ldd ${HOME}/Steam/ubuntu12_32/* | grep 'not found'

That should give you a list of all the missing libraries; even if you use a language other than English, leave the last part as 'not found'.

The steam executable itself doesn't depend on many, but those it loads at runtime will exit the process cleanly if their dependencies are unsatisfied, giving no output apart from the "exception handler being installed."