I have updated my Ubuntu 8.10 to 9.04 in the previous month . After the update I was facing a problem when playing videos . When we plays a video the user is being logged out . It was a strange one . I looked the forum , yes many have reported the bug. As I will not be using mainly to view video I thought of not considering the issue much . But today I was forced to fix for I want to play a movie . What to do with the bug ? . As every one do I go for a google . Yes I got the solution and its working fine . These are the things you must do . Edit the /etc/apt/sources.list and add the lines ( You must be root to do this . Eg: From terminal $ sudo vim /etc/apt/sources.lst ) You can use either vim or gedit or your favourite editor . I am using terminal . deb http://ppa.launchpad.net/siretart/ppa/ubuntu jaunty main deb-src http://ppa.launchpad.net/siretart/ppa/ubuntu jaunty main $ sudo apt-key adv —recv-keys —keyserver keyserver.ubuntu.com 0xce90d8983e731f79 $ sudo apt-get update $ sudo apt-get install xserver-xorg-video-intel-2.4 Just restart your system . Hope it will work for you too . For a better understanding of the following please do look the source from where I got the information . https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/354889 https://wiki.ubuntu.com/ReinhardTartler/X/RevertingIntelDriverTo2.4 *Do at your own risk . Don’t blame me if it doesn’t works for you .