wlan0 No scan results -> Ethernet controller [0200]: Atheros Communications Inc. AR5001 Wireless Network Adapter [168c:001c] (rev 01) cannot detect any wireless networks using ath5k driver on an HP G60 Laptop in Ubuntu 9.10 beta

Hi,

Please first connect your network card to the wireless router using an ethernet cable (also known as a LAN cable).

In order to gather essential troubleshooting information about your wireless card, please follow this procedure:

Step 1: Open Terminal from "Applications->Accessories->Terminal"

Step 2: Please copy-paste the following command from the https://answers.launchpad.net/ubuntu website in Firefox into the Linux Terminal. Do NOT copy-paste from the Email message into the Terminal, as that will only copy PART of the command. The command STARTS with the word sudo and ENDS with the word restart. So please copy-paste the ENTIRE command below from Firefox into a Terminal, press <enter>, then enter password when sudo asks for password, then press enter again.

sudo lshw -C network; sudo iwlist scanning; cat /etc/network/interfaces; cat /etc/lsb-release; lspci -nn; lsusb; sudo lshw -C usb; uname -a; dmesg | grep ound; dmesg | grep b43; dmesg | grep iwl; iwconfig; sudo /etc/init.d/networking restart

Step 3: Please post results (copy/paste terminal output) on this thread

Regards,

Mark

launchpad is a great place to get answers because of the wide community available but if you install 9.10 which isnt officially released then you must expect problems to occur.

There is the development branch which can help you at:

https://wiki.ubuntu.com/Testing

 *-network
       description: Ethernet interface
       product: MCP77 Ethernet
       vendor: nVidia Corporation
       physical id: a
       bus info: pci@0000:00:0a.0
       logical name: eth0
       version: a2
       serial: 00:1f:16:5c:e7:d3
       size: 100MB/s
       capacity: 100MB/s
       width: 32 bits
       clock: 66MHz
       capabilities: pm msi ht bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=forcedeth driverversion=0.64 duplex=full ip=192.168.1.4 latency=0 link=yes maxlatency=20 mingnt=1 multicast=yes port=MII speed=100MB/s
       resources: irq:26 memory:c0009000-c0009fff ioport:30f8(size=8) memory:c0007c00-c0007cff memory:c0007800-c000780f
  *-network
       description: Wireless interface
       product: AR5001 Wireless Network Adapter
       vendor: Atheros Communications Inc.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: wmaster0
       version: 01
       serial: 00:24:2b:15:fd:fc
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list logical ethernet physical wireless
       configuration: broadcast=yes driver=ath5k latency=0 multicast=yes wireless=IEEE 802.11bg
       resources: irq:23 memory:c2000000-c200ffff

lo Interface doesn't support scanning.

eth0 Interface doesn't support scanning.

wmaster0 Interface doesn't support scanning.

wlan0 No scan results

auto lo
iface lo inet loopback

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=9.10
DISTRIB_CODENAME=karmic
DISTRIB_DESCRIPTION="Ubuntu karmic (development branch)"

00:00.0 RAM memory [0500]: nVidia Corporation MCP78S [GeForce 8200] Memory Controller [10de:0754] (rev a2)
00:01.0 ISA bridge [0601]: nVidia Corporation Device [10de:075e] (rev a2)
00:01.1 SMBus [0c05]: nVidia Corporation MCP78S [GeForce 8200] SMBus [10de:0752] (rev a1)
00:01.3 Co-processor [0b40]: nVidia Corporation MCP78S [GeForce 8200] Co-Processor [10de:0753] (rev a2)
00:01.4 RAM memory [0500]: nVidia Corporation MCP78S [GeForce 8200] Memory Controller [10de:0568] (rev a1)
00:02.0 USB Controller [0c03]: nVidia Corporation MCP78S [GeForce 8200] OHCI USB 1.1 Controller [10de:077b] (rev a1)
00:02.1 USB Controller [0c03]: nVidia Corporation MCP78S [GeForce 8200] EHCI USB 2.0 Controller [10de:077c] (rev a1)
00:04.0 USB Controller [0c03]: nVidia Corporation MCP78S [GeForce 8200] OHCI USB 1.1 Controller [10de:077d] (rev a1)
00:04.1 USB Controller [0c03]: nVidia Corporation MCP78S [GeForce 8200] EHCI USB 2.0 Controller [10de:077e] (rev a1)
00:06.0 IDE interface [0101]: nVidia Corporation MCP78S [GeForce 8200] IDE [10de:0759] (rev a1)
00:07.0 Audio device [0403]: nVidia Corporation MCP72XE/MCP72P/MCP78U/MCP78S High Definition Audio [10de:0774] (rev a1)
00:08.0 PCI bridge [0604]: nVidia Corporation MCP78S [GeForce 8200] PCI Bridge [10de:075a] (rev a1)
00:09.0 IDE interface [0101]: nVidia Corporation MCP78S [GeForce 8200] SATA Controller (non-AHCI mode) [10de:0ad0] (rev a2)
00:0a.0 Ethernet controller [0200]: nVidia Corporation MCP77 Ethernet [10de:0760] (rev a2)
00:0b.0 PCI bridge [0604]: nVidia Corporation MCP78S [GeForce 8200] PCI Express Bridge [10de:0569] (rev a1)
00:14.0 PCI bridge [0604]: nVidia Corporation MCP78S [GeForce 8200] PCI Bridge [10de:077a] (rev a1)
00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] HyperTransport Configuration [1022:1300] (rev 40)
00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] Family 11h [Turion X2, Athlon X2, Sempron] Address Map [1022:1301]
00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] DRAM Controller [1022:1302]
00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] Miscellaneous Control [1022:1303]
00:18.4 Host bridge [0600]: Advanced Micro Devices [AMD] Mobile K10 [Turion X2, Athlon X2, Sempron] Link Control [1022:1304]
02:00.0 VGA compatible controller [0300]: nVidia Corporation C77 [GeForce 8200M G] [10de:0845] (rev a2)
07:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR5001 Wireless Network Adapter [168c:001c] (rev 01)

Bus 002 Device 002: ID 04f2:b091 Chicony Electronics Co., Ltd
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0bda:0158 Realtek Semiconductor Corp. Mass Stroage Device
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Linux UNDEADMACHINA 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux

[ 0.000000] found SMP MP-table at [c00f7ff0] f7ff0
[ 0.232375] ACPI: No dock devices found.
[ 0.294113] pnp: PnP ACPI: found 12 devices
[ 0.980001] isapnp: No Plug & Play device found
[ 0.996675] hub 1-0:1.0: USB hub found
[ 1.008586] hub 2-0:1.0: USB hub found
[ 1.066177] hub 3-0:1.0: USB hub found
[ 1.122640] hub 4-0:1.0: USB hub found
[ 1.156909] device-mapper: multipath round-robin: version 1.0.0 loaded
[ 1.158712] powernow-k8: Found 1 AMD Athlon Dual-Core QL-62 processors (2 cpu cores) (version 2.20.00)
[ 1.159685] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 1.853127] usb-storage: device found at 2
[ 7.678372] lp: driver loaded but no devices found
[ 11.651379] uvcvideo: Found UVC 1.00 device CNF7047 (04f2:b091)
[ 12.708988] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[ 13.393117] input: HDA NVidia Mic as /devices/pci0000:00/0000:00:07.0/sound/card0/input9
[ 13.393208] input: HDA NVidia Mic as /devices/pci0000:00/0000:00:07.0/sound/card0/input10
[ 13.393267] input: HDA NVidia Headphone as /devices/pci0000:00/0000:00:07.0/sound/card0/input11

lo no wireless extensions.

eth0 no wireless extensions.

wmaster0 no wireless extensions.

wlan0 IEEE 802.11bg ESSID:""
          Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
          Tx-Power=20 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality:0 Signal level:0 Noise level:0
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

 * Reconfiguring network interfaces... [ OK ]

Try booting into an earlier Ubuntu kernel version and then retest wireless.

If that does not help, please try this procedure to replace NetworkManager with wicd:

Step 1: Open Terminal from "Applications->Accessories->
Terminal"

Step 2: Run the following commands (copy-paste each line into the Terminal, press <enter> after each line)

sudo aptitude update

sudo aptitude install wicd

Step 3: reboot and retest wireless

If that does not help either, please temporarily disable encryption on the router and enable SSID broadcasting. Then retest wireless again.

Thanks John Mahoney, that solved my question.