Thank you Alec and Mark. Yes it seems that it is the reason. "xhost +" seems also to be needed to authorize x server access to users. Is it expected? Mark Whidby <[log in to unmask]> a écrit : > On Wed, 2013-11-06 at 16:14 +0100, [log in to unmask] wrote: >> Dear Scientific Linux users, >> >> Since few days, the computers from our lab running under SL 5.7 - 64 >> bits experience all the same bug that prevents using applications such >> as: firefox, thunderbid, glxgears, glxinfo. >> The update policy is based on the default configuration. >> The bug seems to result from a recent update, maybe end of October >> (more info on the recent updates in the enclosed yum.log). >> >> The easiest way to reproduce this bug is to execute glxinfo. The >> outcome is that the screen turns black and the session restarts. Since >> this bug was first noticed under firefox and thunderbird, a "strace" >> was executed on those applications and it turned out that the bug was >> labeled as "Error 104" which indicates a restart by the X server. If >> you are interested, you may find enclosed more information. >> >> Has this problem been reported by other institutes or users? > > Did you reinstall the Nvidia driver after the update to > xorg-x11-server-Xorg on 17/10? > > -- > Mark Whidby > Infrastructure Coordinator (Unix) > Physics/Chemistry/EAES/Mathematics Team > IT Services, Faculty of Engineering and Physical Sciences > ---------------------------------------------------------------------------- This message was sent using the webmail platform from IN2P3 Computing Center