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Until yesterday everything was going alright on Ubuntu GNOME 13.04 with GNOME 3.8 from gnome3-team ppa.

Today I cannot log in again. After booting, it hangs on the blue desktop from GDM and nothing happens.

I have just reinstalled Ubuntu GNOME keeping my home folder and once again the problem persists. Note that this time I didn't put any third parties PPAs.

Where to begin looking for solutions in this problem? /var/log/boot.log looks alright besides some kind of problem with 'saned' being disabled.

I found some errors in the syslog

Apr 23 20:52:14 marc-linux bluetoothd[960]: Bluetooth daemon 4.101
Apr 23 20:52:14 marc-linux bluetoothd[960]: Starting SDP server
Apr 23 20:52:14 marc-linux modem-manager[957]: <info>  ModemManager (version 0.6.0.0) starting...
Apr 23 20:52:14 marc-linux kernel: [   13.070853] Bluetooth: Core ver 2.16
Apr 23 20:52:14 marc-linux kernel: [   13.070874] NET: Registered protocol family 31
Apr 23 20:52:14 marc-linux kernel: [   13.070876] Bluetooth: HCI device and connection manager initialized
Apr 23 20:52:14 marc-linux kernel: [   13.070884] Bluetooth: HCI socket layer initialized
Apr 23 20:52:14 marc-linux kernel: [   13.070886] Bluetooth: L2CAP socket layer initialized
Apr 23 20:52:14 marc-linux kernel: [   13.070891] Bluetooth: SCO socket layer initialized
Apr 23 20:52:14 marc-linux kernel: [   13.111811] Bluetooth: RFCOMM TTY layer initialized
Apr 23 20:52:14 marc-linux kernel: [   13.111823] Bluetooth: RFCOMM socket layer initialized
Apr 23 20:52:14 marc-linux kernel: [   13.111825] Bluetooth: RFCOMM ver 1.11
Apr 23 20:52:14 marc-linux bluetoothd[960]: DIS cannot start: GATT is disabled
Apr 23 20:52:14 marc-linux bluetoothd[960]: Failed to init deviceinfo plugin
Apr 23 20:52:14 marc-linux bluetoothd[960]: Failed to init proximity plugin
Apr 23 20:52:14 marc-linux bluetoothd[960]: Failed to init time plugin
Apr 23 20:52:14 marc-linux bluetoothd[960]: Failed to init alert plugin
Apr 23 20:52:14 marc-linux bluetoothd[960]: Failed to init thermometer plugin
Apr 23 20:52:14 marc-linux avahi-daemon[975]: Found user 'avahi' (UID 110) and group 'avahi' (GID 116).
Apr 23 20:52:14 marc-linux avahi-daemon[975]: Successfully dropped root privileges.
Apr 23 20:52:14 marc-linux avahi-daemon[975]: avahi-daemon 0.6.31 starting up.
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Successfully called chroot().
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Successfully dropped remaining capabilities.
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Loading service file /services/udisks.service.
Apr 23 20:52:15 marc-linux kernel: [   13.231022] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
Apr 23 20:52:15 marc-linux kernel: [   13.231026] Bluetooth: BNEP filters: protocol multicast
Apr 23 20:52:15 marc-linux kernel: [   13.231035] Bluetooth: BNEP socket layer initialized
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Network interface enumeration completed.
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Registering HINFO record with values 'X86_64'/'LINUX'.
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Server startup complete. Host name is marc-linux.local. Local service cookie is 2532208128.
Apr 23 20:52:15 marc-linux avahi-daemon[975]: Service "marc-linux" (/services/udisks.service) successfully established.
Apr 23 20:52:15 marc-linux kernel: [   13.301071] ppdev: user-space parallel port driver
Apr 23 20:52:15 marc-linux bluetoothd[960]: Failed to init gatt_example plugin
Apr 23 20:52:15 marc-linux bluetoothd[960]: Bluetooth Management interface initialized
Apr 23 20:52:15 marc-linux kernel: [   13.460244] type=1400 audit(1366761135.314:8): apparmor="STATUS" operation="profile_load" name="/usr/lib/cups/backend/cups-pdf" pid=998 comm="apparmor_parser"
Apr 23 20:52:15 marc-linux kernel: [   13.460711] type=1400 audit(1366761135.314:9): apparmor="STATUS" operation="profile_load" name="/usr/sbin/cupsd" pid=998 comm="apparmor_parser"
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'AnyData'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Gobi'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Wavecom'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Linktop'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Novatel'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Ericsson MBM'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Option'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'SimTech'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'MotoC'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Longcheer'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Nokia'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Option High-Speed'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Huawei'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'X22X'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'ZTE'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Samsung'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Sierra'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Iridium'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Cinterion'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Loaded plugin 'Generic'
Apr 23 20:52:15 marc-linux modem-manager[957]: <info>  Successfully loaded 20 plugins
Apr 23 20:52:15 marc-linux NetworkManager[1002]: <info> NetworkManager (version 0.9.8.0) is starting...
Apr 23 20:52:15 marc-linux NetworkManager[1002]: <info> Read config file /etc/NetworkManager/NetworkManager.conf
Apr 23 20:52:15 marc-linux NetworkManager[1002]: <info> WEXT support is enabled
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> VPN: loaded org.freedesktop.NetworkManager.pptp
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> DNS: loaded plugin dnsmasq
Apr 23 20:52:16 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.PolicyKit1' (using servicehelper)
Apr 23 20:52:16 marc-linux polkitd[1007]: started daemon version 0.105 using authority implementation `local' version `0.105'
Apr 23 20:52:16 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.PolicyKit1'
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: init!
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: update_system_hostname
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPluginIfupdown: management mode: unmanaged
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:07.0/net/eth0, iface: eth0)
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:07.0/net/eth0, iface: eth0): no ifupdown configuration found.
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo)
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found.
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: end _init.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Loaded plugin ifupdown: (C) 2008 Canonical Ltd.  To report bugs please use the NetworkManager mailing list.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc.  To report bugs please use the NetworkManager mailing list.
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    Ifupdown: get unmanaged devices count: 0
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: (15700144) ... get_connections.
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    SCPlugin-Ifupdown: (15700144) ... get_connections (managed=false): return empty list.
Apr 23 20:52:16 marc-linux NetworkManager[1002]:    Ifupdown: get unmanaged devices count: 0
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> modem-manager is now available
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> monitoring kernel firmware directory '/lib/firmware'.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> WiFi hardware radio set enabled
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> WiFi enabled by radio killswitch; enabled by state file
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> WWAN enabled by radio killswitch; enabled by state file
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> WiMAX enabled by radio killswitch; enabled by state file
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Networking is enabled by state file
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <warn> failed to allocate link cache: (-10) Operation not supported
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): carrier is OFF
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): new Ethernet device (driver: 'forcedeth' ifindex: 2)
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): exported as /org/freedesktop/NetworkManager/Devices/0
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): bringing up device.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): carrier now ON (device state 20)
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): preparing device.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): deactivating device (reason 'managed') [2]
Apr 23 20:52:16 marc-linux kernel: [   14.588355] forcedeth 0000:00:07.0: irq 43 for MSI/MSI-X
Apr 23 20:52:16 marc-linux kernel: [   14.588386] forcedeth 0000:00:07.0 eth0: MSI enabled
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Added default wired connection 'Wired connection 1' for /sys/devices/pci0000:00/0000:00:07.0/net/eth0
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <warn> /sys/devices/virtual/net/lo: couldn't determine device driver; ignoring...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Auto-activating connection 'Wired connection 1'.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) starting connection 'Wired connection 1'
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): device state change: disconnected -> prepare (reason 'none') [30 40 0]
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) started...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) scheduled...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 1 of 5 (Device Prepare) complete.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) starting...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): device state change: prepare -> config (reason 'none') [40 50 0]
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) successful.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 2 of 5 (Device Configure) complete.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) started...
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): device state change: config -> ip-config (reason 'none') [50 70 0]
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> dhclient started with pid 1013
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Beginning IP6 addrconf.
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 3 of 5 (IP Configure Start) complete.
Apr 23 20:52:16 marc-linux dhclient: Internet Systems Consortium DHCP Client 4.2.4
Apr 23 20:52:16 marc-linux dhclient: Copyright 2004-2012 Internet Systems Consortium.
Apr 23 20:52:16 marc-linux dhclient: All rights reserved.
Apr 23 20:52:16 marc-linux dhclient: For info, please visit https://www.isc.org/software/dhcp/
Apr 23 20:52:16 marc-linux dhclient: 
Apr 23 20:52:16 marc-linux NetworkManager[1002]: <info> (eth0): DHCPv4 state changed nbi -> preinit
Apr 23 20:52:16 marc-linux dhclient: Listening on LPF/eth0/00:26:2d:35:b9:04
Apr 23 20:52:16 marc-linux dhclient: Sending on   LPF/eth0/00:26:2d:35:b9:04
Apr 23 20:52:16 marc-linux dhclient: Sending on   Socket/fallback
Apr 23 20:52:16 marc-linux dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0xfc93b5d)
Apr 23 20:52:17 marc-linux kernel: [   15.366752] type=1400 audit(1366761137.222:10): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=1037 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.367185] type=1400 audit(1366761137.222:11): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=1037 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.367439] type=1400 audit(1366761137.222:12): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=1037 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.389737] type=1400 audit(1366761137.246:13): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/mission-control-5" pid=1040 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.390275] type=1400 audit(1366761137.246:14): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*" pid=1040 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.391104] type=1400 audit(1366761137.246:15): apparmor="STATUS" operation="profile_load" name="/usr/lib/telepathy/telepathy-*//sanitized_helper" pid=1040 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.394550] type=1400 audit(1366761137.250:16): apparmor="STATUS" operation="profile_replace" name="/usr/lib/cups/backend/cups-pdf" pid=1041 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux kernel: [   15.395051] type=1400 audit(1366761137.250:17): apparmor="STATUS" operation="profile_replace" name="/usr/sbin/cupsd" pid=1041 comm="apparmor_parser"
Apr 23 20:52:17 marc-linux anacron[1095]: Anacron 2.3 started on 2013-04-23
Apr 23 20:52:17 marc-linux acpid: starting up with proc fs
Apr 23 20:52:17 marc-linux cron[1078]: (CRON) INFO (pidfile fd = 3)
Apr 23 20:52:17 marc-linux anacron[1095]: Will run job `cron.daily' in 5 min.
Apr 23 20:52:17 marc-linux anacron[1095]: Will run job `cron.weekly' in 10 min.
Apr 23 20:52:17 marc-linux anacron[1095]: Will run job `cron.monthly' in 15 min.
Apr 23 20:52:17 marc-linux anacron[1095]: Jobs will be executed sequentially
Apr 23 20:52:17 marc-linux cron[1114]: (CRON) STARTUP (fork ok)
Apr 23 20:52:17 marc-linux cron[1114]: (CRON) INFO (Running @reboot jobs)
Apr 23 20:52:18 marc-linux avahi-daemon[975]: Joining mDNS multicast group on interface eth0.IPv6 with address fe80::226:2dff:fe35:b904.
Apr 23 20:52:18 marc-linux avahi-daemon[975]: New relevant interface eth0.IPv6 for mDNS.
Apr 23 20:52:18 marc-linux avahi-daemon[975]: Registering new address record for fe80::226:2dff:fe35:b904 on eth0.*.
Apr 23 20:52:18 marc-linux acpid: 33 rules loaded
Apr 23 20:52:18 marc-linux acpid: waiting for events: event logging is off
Apr 23 20:52:18 marc-linux acpid: client connected from 1265[0:0]
Apr 23 20:52:18 marc-linux acpid: 1 client rule loaded
Apr 23 20:52:19 marc-linux dhclient: DHCPREQUEST of 192.168.25.7 on eth0 to 255.255.255.255 port 67 (xid=0xfc93b5d)
Apr 23 20:52:19 marc-linux dhclient: DHCPOFFER of 192.168.25.7 from 192.168.25.1
Apr 23 20:52:19 marc-linux dhclient: DHCPACK of 192.168.25.7 from 192.168.25.1
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info> (eth0): DHCPv4 state changed preinit -> bound
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   address 192.168.25.7
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   prefix 24 (255.255.255.0)
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   gateway 192.168.25.1
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   hostname 'marc-linux'
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   nameserver '192.168.25.1'
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info>   domain name 'home'
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Configure Commit) scheduled...
Apr 23 20:52:19 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) started...
Apr 23 20:52:19 marc-linux avahi-daemon[975]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.25.7.
Apr 23 20:52:19 marc-linux avahi-daemon[975]: New relevant interface eth0.IPv4 for mDNS.
Apr 23 20:52:19 marc-linux avahi-daemon[975]: Registering new address record for 192.168.25.7 on eth0.IPv4.
Apr 23 20:52:19 marc-linux dhclient: bound to 192.168.25.7 -- renewal in 39834 seconds.
Apr 23 20:52:19 marc-linux gdm-simple-slave[1168]: WARNING: Failed to give slave programs access to the display. Trying to proceed.
Apr 23 20:52:19 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.Accounts' (using servicehelper)
Apr 23 20:52:19 marc-linux accounts-daemon[1297]: started daemon version 0.6.29
Apr 23 20:52:19 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.Accounts'
Apr 23 20:52:19 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.ConsoleKit' (using servicehelper)
Apr 23 20:52:19 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.ConsoleKit'
Apr 23 20:52:20 marc-linux gdm-launch-environment][1294]: GLib-CRITICAL: g_variant_compare: assertion `!g_variant_is_container (a)' failed
Apr 23 20:52:20 marc-linux gdm-launch-environment][1294]: GLib-CRITICAL: g_variant_compare: assertion `!g_variant_is_container (a)' failed
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> (eth0): device state change: ip-config -> secondaries (reason 'none') [70 90 0]
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 5 of 5 (IPv4 Commit) complete.
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> (eth0): device state change: secondaries -> activated (reason 'none') [90 100 0]
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> Policy set 'Wired connection 1' (eth0) as default for IPv4 routing and DNS.
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> DNS: starting dnsmasq...
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <warn> dnsmasq not available on the bus, can't update servers.
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <error> [1366761140.496992] [nm-dns-dnsmasq.c:402] update(): dnsmasq owner not found on bus: Could not get owner of name 'org.freedesktop.NetworkManager.dnsmasq': no such name
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <warn> DNS: plugin dnsmasq update failed
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> Writing DNS information to /sbin/resolvconf
Apr 23 20:52:20 marc-linux dnsmasq[1429]: started, version 2.65 cache disabled
Apr 23 20:52:20 marc-linux dnsmasq[1429]: compile time options: IPv6 GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack
Apr 23 20:52:20 marc-linux dnsmasq[1429]: DBus support enabled: connected to system bus
Apr 23 20:52:20 marc-linux dnsmasq[1429]: warning: no upstream servers configured
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> Activation (eth0) successful, device activated.
Apr 23 20:52:20 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <warn> dnsmasq appeared on DBus: :1.20
Apr 23 20:52:20 marc-linux NetworkManager[1002]: <info> Writing DNS information to /sbin/resolvconf
Apr 23 20:52:20 marc-linux dnsmasq[1429]: setting upstream servers from DBus
Apr 23 20:52:20 marc-linux dnsmasq[1429]: using nameserver 192.168.25.1#53
Apr 23 20:52:20 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
Apr 23 20:52:22 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.UPower' (using servicehelper)
Apr 23 20:52:22 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.UPower'
Apr 23 20:52:23 marc-linux gdm-launch-environment][1294]: GLib-CRITICAL: g_variant_compare: assertion `!g_variant_is_container (a)' failed
Apr 23 20:52:23 marc-linux gdm-launch-environment][1294]: GLib-CRITICAL: g_variant_compare: assertion `!g_variant_is_container (a)' failed
Apr 23 20:52:23 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.RealtimeKit1' (using servicehelper)
Apr 23 20:52:23 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.RealtimeKit1'
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Successfully called chroot.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Successfully dropped privileges.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Successfully limited resources.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Running.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Watchdog thread running.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Canary thread running.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Successfully made thread 1744 of process 1744 (n/a) owned by '114' high priority at nice level -11.
Apr 23 20:52:23 marc-linux rtkit-daemon[1746]: Supervising 1 threads of 1 processes of 1 users.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Successfully made thread 1753 of process 1744 (n/a) owned by '114' RT at priority 5.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Supervising 2 threads of 1 processes of 1 users.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Successfully made thread 1754 of process 1744 (n/a) owned by '114' RT at priority 5.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Supervising 3 threads of 1 processes of 1 users.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Successfully made thread 1755 of process 1744 (n/a) owned by '114' RT at priority 5.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Supervising 4 threads of 1 processes of 1 users.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Successfully made thread 1757 of process 1757 (n/a) owned by '114' high priority at nice level -11.
Apr 23 20:52:24 marc-linux rtkit-daemon[1746]: Supervising 5 threads of 2 processes of 1 users.
Apr 23 20:52:24 marc-linux pulseaudio[1757]: [pulseaudio] pid.c: Daemon already running.
Apr 23 20:52:25 marc-linux dbus[946]: [system] Activating service name='org.freedesktop.UDisks2' (using servicehelper)
Apr 23 20:52:25 marc-linux udisksd[1766]: udisks daemon version 2.1.0 starting
Apr 23 20:52:25 marc-linux dbus[946]: [system] Successfully activated service 'org.freedesktop.UDisks2'
Apr 23 20:52:25 marc-linux udisksd[1766]: Acquired the name org.freedesktop.UDisks2 on the system message bus
Apr 23 20:52:26 marc-linux gnome-session[1424]: WARNING: Detected that screensaver has left the bus
Apr 23 20:52:27 marc-linux gnome-session[1424]: WARNING: Detected that screensaver has left the bus
Apr 23 20:52:27 marc-linux gnome-session[1424]: WARNING: App 'gnome-shell.desktop' respawning too quickly
Apr 23 20:52:27 marc-linux gnome-session[1424]: CRITICAL: We failed, but the fail whale is dead. Sorry....
Apr 23 20:52:29 marc-linux ntpdate[1553]: adjust time server 91.189.94.4 offset -0.339355 sec
Apr 23 20:52:36 marc-linux NetworkManager[1002]: <info> (eth0): IP6 addrconf timed out or failed.
Apr 23 20:52:36 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...
Apr 23 20:52:36 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) started...
Apr 23 20:52:36 marc-linux NetworkManager[1002]: <info> Activation (eth0) Stage 4 of 5 (IPv6 Configure Timeout) complete.
Apr 23 20:57:17 marc-linux anacron[1095]: Job `cron.daily' started
Apr 23 20:57:17 marc-linux anacron[2274]: Updated timestamp for job `cron.daily' to 2013-04-23

Thank you in advance.

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Check syslog, Xorg.0.log, dmesg, you can find them in /var/log. –  grimpitch Apr 24 '13 at 0:09
    
I found some errors on the syslog and edited my question –  Marc SJ Apr 24 '13 at 0:54
    
Did you remove the third party PPAs? –  grimpitch Apr 24 '13 at 1:25
    
Try to remove the gnome-shell-extensions package, if it doesn't bring you forward, reinstall the gnome-shell, gnome-session, gdm, compiz, compiz-core, metacity packages. Xorg.0.log did not show any errors? –  grimpitch Apr 24 '13 at 1:44
    
I did a clean installation and the problem persists. I will try reinstalling all those packages once in home –  Marc SJ Apr 24 '13 at 11:20
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2 Answers 2

up vote 3 down vote accepted

I too made the mistake of not using sudo apt-get dist-upgrade and could not log in.

Fortunately, there is a way to apply the full update without reinstalling Ubuntu. When you restart your computer and you think the booting process is done, press Ctrl+Alt+F1. You will be prompted a command line.

Log in with your username and password and make sure you have internet connection (e.g. ping google.com). If your WiFi isn't working, connect your computer to the router using an ethernet cable.

You can then simply type sudo apt-get dist-upgrade and your machine will download and install the missing packages. Restart your computer with sudo shutdown -r now and after rebooting, Gnome 3.8 should be working just fine.

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That worked after doing a dist-upgrade to the stable 13.04 version out yesterday. Thanks –  Marc SJ Apr 26 '13 at 17:13
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I notice you mention you have installed the gnome3 PPA. Did you ensure that while installing this PPA you performed an update with: sudo apt-get dist-upgrade as opposed to just using the upgrade option? This is mentioned in the release notes of the PPA and if it is not done it will cause symptoms similar to what you describe.

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Yes, I did a distupgrade –  Marc SJ Apr 24 '13 at 19:08
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