Comment 148 for bug 439138

FYI I just saw this bug in Xubuntu 10.04, running as a VM under Virtualbox 4.2 and OSX.

top showed 100% for Xorg process. Attaching strace to it gave the attached screenshot. After a few seconds of this scrolling up the whole graphic system froze, but I can still ssh to the VM happily, and CPU utilisation has dropped back down to zero.

From the ssh session:

brian@gateway:~$ ps auxwww | grep X
root 739 77.7 5.7 116344 29136 ? Ts 15:17 18:07 /usr/bin/X :1 -br -verbose -auth /var/run/gdm/auth-for-gdm-6yRsVu/database -nolisten tcp
brian 1129 0.0 0.1 4108 632 ? Ss 15:18 0:00 /bin/sh /etc/xdg/xfce4/xinitrc -- /etc/X11/xinit/xserverrc
brian 1325 0.0 2.8 232464 14516 ? Sl 15:18 0:00 /usr/lib/xfce4/panel-plugins/xfce4-menu-plugin socket_id 37748789 name xfce4-menu id 1 display_name Xfce Menu size 24 screen_position 1
brian 1682 0.0 0.1 7644 980 pts/4 S+ 15:41 0:00 grep --color=auto X
brian@gateway:~$ ps auxwww | grep strace
root 1669 0.0 0.1 4348 760 pts/1 S+ 15:37 0:00 strace -p 739
brian 1684 0.0 0.1 7640 920 pts/4 S+ 15:41 0:00 grep --color=auto strace
brian@gateway:~$ uptime
 15:41:41 up 23 min, 6 users, load average: 0.01, 0.42, 0.52