Wifi USB Adapter stops working intermittently

[Colin23erk]

2 lots of output from Advent 4211

Code:

cath@cath-Advent-4211:~$ sudo apt-get install linux-backports-modules-cw-3.6-precise-generi
[sudo] password for cath:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package linux-backports-modules-cw-3.6-precise-generi
E: Couldn't find any package by regex 'linux-backports-modules-cw-3.6-precise-generi'
cath@cath-Advent-4211:~$ lspci -nnk | grep -i net
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8187SE Wireless LAN Controller [10ec:8199] (rev 22)
cath@cath-Advent-4211:~$

Code:

cath@cath-Advent-4211:~$ lspci -nnk | grep -i net
01:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)
02:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8187SE Wireless LAN Controller [10ec:8199] (rev 22)
cath@cath-Advent-4211:~$ sudo lshw -C network
[sudo] password for cath:
  *-network               
       description: Ethernet interface
       product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 02
       serial: 00:1d:92:59:6a:5f
       size: 10Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:42 ioport:c000(size=256) memory:ffd10000-ffd10fff memory:ffd00000-ffd0ffff memory:dfd00000-dfd0ffff
  *-network
       description: Wireless interface
       product: RTL8187SE Wireless LAN Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlan0
       version: 22
       serial: 00:1d:92:c6:26:75
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=r8180 latency=0 multicast=yes wireless=802.11b/g
       resources: irq:17 ioport:b000(size=256) memory:dfc00000-dfc03fff
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:1
       logical name: wlan1
       serial: 00:0b:81:84:1e:8b
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192cu driverversion=3.13.0-24-generic firmware=N/A ip=192.168.1.65 link=yes multicast=yes wireless=IEEE 802.11bgn
cath@cath-Advent-4211:~$ lsmod

Colin