Just recently reinstalled Ubuntu 12.10 on my laptop (dual-boot with Windows 7). Had no problem accessing my home wireless network until today. All of a sudden, the network manager doesn't seem to be picking up any wireless networks. My laptop's wireless adapter is on, I can connect when I'm using my Windows 7 partition, and every other device in my house is able to connect. Why would the wireless just drop off like this? I can post the results of any commands I should run if that would help.
EDIT: here is the requested additional information:
sudo uname -a
Linux richard-HP-G62-Notebook-PC 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
sudo lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 05)
00:1c.2 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 3 (rev 05)
00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a5)
00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 4 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 05)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller (rev 01)
7f:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 05)
7f:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 05)
7f:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 05)
7f:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 05)
7f:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
7f:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 05)
sudo ifconfig
eth0 Link encap:Ethernet HWaddr 3c:4a:92:00:aa:66
inet addr:192.168.0.114 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::3e4a:92ff:fe00:aa66/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:58290 errors:0 dropped:0 overruns:0 frame:0
TX packets:3475 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7592666 (7.5 MB) TX bytes:620983 (620.9 KB)
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:3618 errors:0 dropped:0 overruns:0 frame:0
TX packets:3618 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:590058 (590.0 KB) TX bytes:590058 (590.0 KB
