package steam 1:1.0.0.48-1ubuntu1 failed to install/upgrade: el subproceso script pre-installation nuevo devolvió el código de salida de error 30

[fernandogavilan]

tried to launch steam, but failed. tried again in terminal, giving this message
Installing breakpad exception handler for appid(steam)/version(0)
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: steam 1:1.0.0.48-1ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-26.28-generic 3.19.8-ckt4
Uname: Linux 3.19.0-26-generic i686
ApportVersion: 2.17.2-0ubuntu1.2
AptOrdering:
 steam: Install
 steam: Configure
 NULL: ConfigurePending
Architecture: i386
Date: Wed Aug 19 01:06:44 2015
DpkgTerminalLog:
 Preparando para desempaquetar .../steam_1%3a1.0.0.48-1ubuntu1_i386.deb ...
 dpkg: error al procesar el archivo /var/cache/apt/archives/steam_1%3a1.0.0.48-1ubuntu1_i386.deb (--unpack):
  el subproceso script pre-installation nuevo devolvió el código de salida de error 30
DuplicateSignature: package:steam:1:1.0.0.48-1ubuntu1:el subproceso script pre-installation nuevo devolvió el código de salida de error 30
ErrorMessage: el subproceso script pre-installation nuevo devolvió el código de salida de error 30
InstallationDate: Installed on 2015-02-05 (194 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release i386 (20141022.1)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.1
SourcePackage: steam
Title: package steam 1:1.0.0.48-1ubuntu1 failed to install/upgrade: el subproceso script pre-installation nuevo devolvió el código de salida de error 30
UpgradeStatus: Upgraded to vivid on 2015-07-28 (21 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Richard Pinter (richard-pinter)]

Running Steam on ubuntu 16.04 64-bit
STEAM_RUNTIME is enabled automatically
Installing breakpad exception handler for appid(steam)/version(0)
libGL error: unable to load driver: r600_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: r600
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

card: ati hd5870
Steam inslallation failed for the first time due to missing dependency(phyton apt), after installed the missing package, the installer runs with no error.
Also steam installed/updated mesa.
Now I am getting this.

[Richard Pinter (richard-pinter)]

found a related topic on github with workaround that solved this problem.
https://github.com/ValveSoftware/steam-for-linux/issues/4200

run steam from terminal or edit shortcut with inserting the following:
LD_PRELOAD='/usr/$LIB/libstdc++.so.6' DISPLAY=:0 steam