Cfrgtkky

I have ubuntu 14.04, however, this problem existed on my install of 13.04 too.

When I use my laptop at university over the Wi-Fi, the connection is lost often. At home on my Wi-Fi network the connection never drops.

The only difference between the connections that I know of is that the university one uses a proxy and automatic proxy config script.

Are there any steps I can take to diagnose the problem and perhaps fix it?

description: Wireless interface

       product: RTL8723AE PCIe Wireless Network Adapter

       vendor: Realtek Semiconductor Co., Ltd.

       physical id: 0

       bus info: pci@0000:04:00.0

       logical name: wlan0

       version: 00

       serial: 20:16:d8:d4:14:cf

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=rtl8723ae driverversion=3.13.0-24-generic firmware=N/A ip=10.0.0.8 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn

       resources: irq:18 ioport:d000(size=256) memory:f7900000-f7903fff  

EDIT: This is from the log files after my internet has disconnected.

May 19 09:23:58 Jethro-Laptop kernel: [  407.463513] wlan0: associate with cc:d5:39:d1:95:90 (try 1/3)

May 19 09:23:58 Jethro-Laptop NetworkManager[767]: <info> (wlan0): supplicant interface state: authenticating -> associating

May 19 09:23:58 Jethro-Laptop wpa_supplicant[4100]: wlan0: Associated with cc:d5:39:d1:95:90

May 19 09:23:58 Jethro-Laptop kernel: [  407.468895] wlan0: RX AssocResp from cc:d5:39:d1:95:90 (capab=0x431 status=0 aid=41)

May 19 09:23:58 Jethro-Laptop kernel: [  407.469141] wlan0: associated

May 19 09:23:58 Jethro-Laptop kernel: [  407.469260] cfg80211: Calling CRDA for country: ZA

May 19 09:23:58 Jethro-Laptop kernel: [  407.473538] cfg80211: Regulatory domain changed to country: ZA

May 19 09:23:58 Jethro-Laptop kernel: [  407.473545] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)

May 19 09:23:58 Jethro-Laptop kernel: [  407.473550] cfg80211:   (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)

May 19 09:23:58 Jethro-Laptop kernel: [  407.473554] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm)

May 19 09:23:58 Jethro-Laptop kernel: [  407.473559] cfg80211:   (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

May 19 09:23:58 Jethro-Laptop kernel: [  407.473563] cfg80211:   (5490000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)

May 19 09:23:58 Jethro-Laptop kernel: [  407.473567] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm)

May 19 09:23:58 Jethro-Laptop NetworkManager[767]: <info> (wlan0): supplicant interface state: associating -> associated

May 19 09:23:58 Jethro-Laptop NetworkManager[767]: <info> (wlan0): supplicant interface state: associated -> 4-way handshake

May 19 09:23:58 Jethro-Laptop wpa_supplicant[4100]: wlan0: WPA: Key negotiation completed with cc:d5:39:d1:95:90 [PTK=CCMP GTK=TKIP]

May 19 09:23:58 Jethro-Laptop wpa_supplicant[4100]: wlan0: CTRL-EVENT-CONNECTED - Connection to cc:d5:39:d1:95:90 completed [id=0 id_str=]

May 19 09:23:58 Jethro-Laptop NetworkManager[767]: <info> (wlan0): supplicant interface state: 4-way handshake -> completed

May 19 09:23:58 Jethro-Laptop NetworkManager[767]: <info> (wlan0): roamed from BSSID (none) ((none)) to CC:D5:39:D1:95:90 (eduroam)

May 19 09:23:57 Jethro-Laptop whoopsie[968]: message repeated 6 times: [ offline]

May 19 09:23:58 Jethro-Laptop whoopsie[968]: online

May 19 09:24:00 Jethro-Laptop NetworkManager[767]: <info> wpa_supplicant die count reset

May 19 09:24:06 Jethro-Laptop ntpdate[4228]: adjust time server 91.189.94.4 offset -0.006569 sec

May 19 09:24:12 Jethro-Laptop NetworkManager[767]: <info> (wlan0): IP6 addrconf timed out or failed.

May 19 09:24:12 Jethro-Laptop NetworkManager[767]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) scheduled...

May 19 09:24:12 Jethro-Laptop NetworkManager[767]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) started...

May 19 09:24:12 Jethro-Laptop NetworkManager[767]: <info> Activation (wlan0) Stage 4 of 5 (IPv6 Configure Timeout) complete.

May 19 09:24:14 Jethro-Laptop wpa_supplicant[4100]: wlan0: CTRL-EVENT-SCAN-STARTED 

If your wireless works, but is slow or drops the connection,
examine the other signals around you:

 sudo iwlist scan

The output will be for all the wireless signals in range,
including yours.

First look at the channels in use. Only channels 1,6, and 11
do not overlap to some degree. Are others using the same channel
you are? Consider changing your channel to a less used one.

Next look at signal levels and quality. Is your signal
level much stronger than the others on your channel?
The levels are shown as negative numbers, so the stronger the
signal, the smaller the negative number. A -56 dBm level is stronger
than a -79 dBm level. If your signal level is not 6dBm stronger
than the next strongest one, you should try to:

1) Move closer to the signal source.

2) Reorient your antenna
(maybe the antenna is around the edge
of the screen, so turn the laptop 90 degrees.

3) Make sure nothing is blocking the signal like fileing cabinets.

4) Try not
be be around many other devices trying to connect to
the same signal source.

In ubuntu, Wifi drivers for most of the devices are in the package linux-firmware-nonfree. So Install that Common Wifi Drivers.

Then install the Wicd Wifi network Manager and use the device with that network manager.

sudo apt-get install linux-firmware-nonfree wicd wicd-gtk wicd-daemon wicd-cli wicd-curses