plötzlich ist meine Ubuntu-Desktop-Ansicht gestreckt, wie man das behebt

Plötzlich wird meine Ubuntu-Desktop-Ansicht gedehnt, um dies zu beheben http://postimg.org/image/3wxr6obw3/7ccb4994/

              [   16.383743] type=1400 audit(1009823471.243:10):                      apparmor="STATUS" operation="profile_replace" profile="unconfined"                     name="/usr/sbin/cupsd" pid=611 comm="apparmor_parser"
              [   16.718843] init: cups main process (612) killed by HUP signal
               [   16.718856] init: cups main process ended, respawning
               [   17.518055] type=1400 audit(1009823472.379:11): apparmor="STATUS"                operation="profile_load" profile="unconfined"    name="/usr/lib/lightdm/lightdm-guest-session" pid=727 comm="apparmor_parser"
             [   17.745303] r8169 0000:01:00.0 eth0: link down
             [   17.745312] r8169 0000:01:00.0 eth0: link down
             [   17.745352] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
                 17.745728] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
              [   19.680203] r8169 0000:01:00.0 eth0: link up
              [   19.680219] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
                [   20.360667] init: plymouth-upstart-bridge main process ended, respawning
              [   20.388438] init: plymouth-upstart-bridge main process ended,   respawning
              [   46.477580] audit_printk_skb: 150 callbacks suppressed
              [   46.477585] type=1400 audit(1427687876.552:62): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2023 comm="apparmor_parser"
           [   46.477592] type=1400 audit(1427687876.552:63): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2023 comm="apparmor_parser"
            [   46.478082] type=1400 audit(1427687876.552:64): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2023 comm="apparmor_parser"
              [  565.816889] perf samples too long (2512 > 2500),  lowering kernel.perf_event_max_sample_rate to 50000
              [  927.723666] systemd-hostnamed[2514]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
              [ 1045.777834] perf samples too long (5045 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
              [ 7193.577746] systemd-hostnamed[2831]: Warning: nss-myhostname is not   installed. Changing the local hostname might make it unresolveable. Please   install nss-myhostname!