Noticed the same issue: $ firefox -safe-mode
(process:29081): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed (firefox:29081): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised (firefox:29081): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised (firefox:29081): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised (firefox:29081): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised Failed to open VDPAU backend libvdpau_i965.so: cannot open shared object file: No such file or directory $ Application Basics ------------------ Name: Firefox Version: 34.0 User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:34.0) Gecko/20100101 Firefox/34.0 Multiprocess Windows: 0/1 Sys Info: ----------- $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 Codename: trusty $ $ uname -a Linux ... 3.13.0-40-generic #69-Ubuntu SMP Thu Nov 13 17:53:56 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to libvdpau in Ubuntu. https://bugs.launchpad.net/bugs/1300215 Title: Failed to open VDPAU backend libvdpau_i965.so: cannot open shared object file: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvdpau/+bug/1300215/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp