Comment 36 for bug 999191

It happaned to me, syslog is:

Jun 3 12:43:59 sem-ubuntu kernel: [11533.832201] NVRM: GPU at 0000:01:00: GPU-40659ece-dd29-caba-4a28-a732e7617170
Jun 3 12:43:59 sem-ubuntu kernel: [11533.832206] NVRM: Xid (0000:01:00): 13, 0001 00000000 00008597 000015e0 00000000 00000100
Jun 3 12:43:59 sem-ubuntu kernel: [11534.095887] NVRM: Xid (0000:01:00): 13, 0001 00000000 00008597 000015e0 00000000 00000100
Jun 3 12:44:00 sem-ubuntu kernel: [11534.378072] NVRM: Xid (0000:01:00): 13, 0001 00000000 00008597 000015e0 00000000 00000100
Jun 3 12:44:00 sem-ubuntu kernel: [11534.645757] NVRM: Xid (0000:01:00): 13, 0001 00000000 00008597 000015e0 00000000 00000100
Jun 3 12:44:00 sem-ubuntu kernel: [11534.925497] NVRM: Xid (0000:01:00): 13, 0001 00000000 00008597 000015e0 00000000 00000100
Jun 3 12:44:37 sem-ubuntu kernel: [11571.881179] NVRM: Xid (0000:01:00): 3, C 00000001 SC 00000003 M 00000104 Data 00000000
Jun 3 12:44:41 sem-ubuntu kernel: [11575.895227] NVRM: Xid (0000:01:00): 13, 0002 00000000 0000502d 00000220 ffffffff 0000000c
Jun 3 12:44:41 sem-ubuntu kernel: [11575.914721] NVRM: Xid (0000:01:00): 13, 0002 00000000 0000502d 00000250 ffffffff 0000000c
Jun 3 12:45:30 sem-ubuntu gnome-session[1943]: Gdk-WARNING: gnome-session: Fatal IO error 11 (资源暂时不可用) on X server :0.#012
Jun 3 12:45:31 sem-ubuntu pulseaudio[5136]: [pulseaudio] client-conf-x11.c: xcb_connection_has_error() 已返回 true
Jun 3 12:45:31 sem-ubuntu pulseaudio[5149]: [pulseaudio] pid.c: Stale PID file, overwriting.
Jun 3 12:45:31 sem-ubuntu pulseaudio[5149]: [pulseaudio] bluetooth-util.c: Error from ListAdapters reply: org.freedesktop.DBus.Error.AccessDenied
Jun 3 12:45:31 sem-ubuntu pulseaudio[5149]: [pulseaudio] server-lookup.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-JMiwIZqPrz: 拒绝连接
Jun 3 12:45:31 sem-ubuntu pulseaudio[5149]: [pulseaudio] main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-JMiwIZqPrz: 拒绝连接
Jun 3 12:45:31 sem-ubuntu acpid: client 1261[0:0] has disconnected
Jun 3 12:45:31 sem-ubuntu acpid: client 1261[0:0] has disconnected
Jun 3 12:45:31 sem-ubuntu acpid: client connected from 5152[0:0]
Jun 3 12:45:31 sem-ubuntu acpid: 1 client rule loaded
Jun 3 12:45:34 sem-ubuntu kernel: [11628.747895] NET: Unregistered protocol family 39