Comment 0 for bug 1372616

Wifi disconnects every 30 minutes or so. I use Ubuntu 14.10 (the devel version). The used kernel is:
Linux daniel-laptop 3.16.0-16-generic #22-Ubuntu SMP Wed Sep 17 18:47:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

dmesg gives the following:
daniel@daniel-laptop:~$ sudo dmesg | tail -n10
[ 2122.301141] wlan0: deauthenticated from 00:1f:3f:d0:95:b3 (Reason: 6=CLASS2_FRAME_FROM_NONAUTH_STA)
[ 2122.340914] cfg80211: Calling CRDA to update world regulatory domain
[ 2122.510148] cfg80211: World regulatory domain updated:
[ 2122.510156] cfg80211: DFS Master region: unset
[ 2122.510158] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[ 2122.510162] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2122.510165] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2122.510167] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2122.510170] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)
[ 2122.510173] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm), (N/A)

Here is the information concerning the wifi

daniel@daniel-laptop:~$ sudo lshw -class network
  *-network
       Beschreibung: Kabellose Verbindung
       Produkt: Centrino Advanced-N 6230 [Rainbow Peak]
       Hersteller: Intel Corporation
       Physische ID: 0
       Bus-Informationen: pci@0000:02:00.0
       Logischer Name: wlan0
       Version: 34
       Seriennummer: 88:53:2e:6e:20:bc
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm msi pciexpress bus_master cap_list ethernet physical wireless
       Konfiguration: broadcast=yes driver=iwlwifi driverversion=3.16.0-16-generic firmware=18.168.6.1 ip=192.168.178.44 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
       Ressourcen: irq:50 memory:c7400000-c7401fff