I have an Acer Aspire S3 running Linux Mint 14 / Ubuntu 12.10. The problem with my wireless is that it keeps disconnecting from the Internet for about 1 minute at a time. It does this every 5-10 minutes. It is still connected to the router - I can ping my router, but I cannot ping an outside server.

I disabled Dnsmasq by commenting out a line in /etc/NetworkManager/NetworkManager.conf and switched to Google's DNS servers. This definitely made things better, but it makes me wonder if maybe doing that sovled an earlier DNS problem and that now I have a different problem?

Let me know if there is any more information I can give on the problem.

cat /etc/resolvconf/resolv.conf.d/head

nameserver 8.8.8.8

nameserver 8.8.4.4

iwconfig:

lo        no wireless extensions.



wlan0     IEEE 802.11abgn  ESSID:"SKYC6B48"

          Mode:Managed  Frequency:2.412 GHz  Access Point: 4C:17:EB:AC:6B:49

          Bit Rate=104 Mb/s   Tx-Power=16 dBm

          Retry  long limit:7   RTS thr:off   Fragment thr:off

          Power Management:off

          Link Quality=65/70  Signal level=-45 dBm

          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0

          Tx excessive retries:225  Invalid misc:79   Missed beacon:0

ifconfig:

lo        Link encap:Local Loopback

          inet addr:127.0.0.1  Mask:255.0.0.0

          inet6 addr: ::1/128 Scope:Host

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:4538 errors:0 dropped:0 overruns:0 frame:0

          TX packets:4538 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0

          RX bytes:2112909 (2.1 MB)  TX bytes:2112909 (2.1 MB)



wlan0     Link encap:Ethernet  HWaddr 84:4b:f5:74:ee:bf

          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0

          inet6 addr: fe80::864b:f5ff:fe74:eebf/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:2383573 errors:0 dropped:0 overruns:0 frame:0

          TX packets:1407209 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:2845276498 (2.8 GB)  TX bytes:234741693 (234.7 MB)

sudo lshw -class network:

*-network

     description: Wireless interface

     product: AR9462 Wireless Network Adapter

     vendor: Atheros Communications Inc.

     physical id: 0

     bus info: pci@0000:02:00.0

     logical name: wlan0

     version: 01

     serial: 84:4b:f5:74:ee:bf

     width: 64 bits

     clock: 33 MHz

     capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless

     configuration: broadcast=yes driver=ath9k driverversion=3.5.0-17-generic firmware=N/A ip=192.168.0.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn

     resources: irq:19 memory:c0400000-c047ffff memory:aff00000-aff0ffff