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Old 02-02-2011, 04:09 PM   #1
nine9nine
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Cannot see wifi networks


I am dualbooting Linux Mint and Windows 7 on my Toshiba laptop. On windows, I can see wireless networks. However, under Linux, when I click on network connections, my wifi network doesn't show up. What should I do.
 
Old 02-02-2011, 04:52 PM   #2
darkduck
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Does Mint see your WiFi card?

http://linuxblog.darkduck.com/2010/1...or-it-yet.html
 
Old 02-03-2011, 02:11 PM   #3
nine9nine
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I'm pretty sure that it does. When checking ispci, I get "03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)". That is my wifi card.
 
Old 02-03-2011, 03:00 PM   #4
onebuck
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Hi,

Quote:
Originally Posted by nine9nine View Post
I'm pretty sure that it does. When checking ispci, I get "03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)". That is my wifi card.
That does not mean that the device module/driver & firmware are in place. What do you see as root from cli for lsmod & ifconfig -a;

Code:
~#lsmod  
Module                  Size  Used by
mmc_block               9103  0 
rndis_wlan             22191  0 
rndis_host              5955  1 rndis_wlan
....
~#ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:19:b9:51:81:1a  
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:21 

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:2467 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2467 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:409614 (400.0 KiB)  TX bytes:409614 (400.0 KiB)

wlan0     Link encap:Ethernet  HWaddr 00:19:7d:5e:e5:20  
          inet addr:192.168.1.18  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::219:7dff:fe5e:e520/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:354469 errors:0 dropped:0 overruns:0 frame:0
          TX packets:156999 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:200169784 (190.8 MiB)  TX bytes:44825124 (42.7 MiB)
Above is just a sample partital output, yours will be different.

Last edited by onebuck; 02-03-2011 at 03:01 PM.
 
Old 02-03-2011, 03:31 PM   #5
Lady Tux
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I had problems with my Toshiba with an Atheros.

One thing you can do is google "madwifi". They are a pretty good source for third party Atheros drivers.

Not sure if your flavor of Linux supports the Madwifi drivers or not. I tried a variety of different loads with varying success. Finally just went with Ubuntu. It loaded all the drivers on installation. Pretty much a turn-key install.
 
Old 02-03-2011, 08:15 PM   #6
schneidz
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Quote:
Originally Posted by nine9nine View Post
I am dualbooting Linux Mint and Windows 7 on my Toshiba laptop. On windows, I can see wireless networks. However, under Linux, when I click on network connections, my wifi network doesn't show up. What should I do.
these commands are to help us to know what your system thinks is installed (not necessarily to get you connected).
Code:
lspci # will tell us the pci devices you have in your system.
lsusb # will tell us the usb devices you have in your system.
ifconfig # will tell us what network interface cards you have turned on in your system.
ifconfig -a # will tell us all the network interface cards you have in your system.
iwconfig # will tell us which of your network interface cards has wireless capability
now that we know that, this should get you connected:
Code:
sudo iwlist device scan # this will use the device interface (that from the above command, we found out has wireless capability) and scan for wireless routers that are accessible.
sudo iwconfig device essid "myssid" # assuming no security, use that device to connect to your router.
sudo dhclient # will attempt to get ip-address, subnet mask, dns server information automatically from your router assuming dhcp is turned on on your router.
 
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Old 02-08-2011, 08:24 PM   #7
nine9nine
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schneidz,
when I type ifconfig:


eth0 Link encap:Ethernet HWaddr 00:26:6c:6c:5d:2d
inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::226:6cff:fe6c:5d2d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:118596 errors:0 dropped:0 overruns:0 frame:0
TX packets:65525 errors:0 dropped:0 overruns:0 carrier:3
collisions:0 txqueuelen:1000
RX bytes:172825453 (172.8 MB) TX bytes:5945115 (5.9 MB)
Interrupt:46

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:60 errors:0 dropped:0 overruns:0 frame:0
TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4176 (4.1 KB) TX bytes:4176 (4.1 KB)

wlan0 Link encap:Ethernet HWaddr 70:f1:a1:55:28:22
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

iwconfig:

lo no wireless extensions.

eth0 no wireless extensions.

wlan0 IEEE 802.11bgn ESSID: off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry long limit:7 RTS thr: off Fragment thr: off
Power Management: off

I'm not sure what any of this means, I'm new to linux. So I'm not sure if it detects my wifi card.

Last edited by nine9nine; 02-08-2011 at 08:28 PM.
 
Old 02-08-2011, 09:48 PM   #8
schneidz
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you didn't show your lspci output.
try, doing this
Code:
sudo ifconfig wlan0 up
ifconfig
sudo iwlist wlan0 scan
edit: i see your lspci output above.
maybe there is a physical button or switch to turn on the wifi.
else maybe the driver isnt loaded; can you show us your lsmod output ?

Last edited by schneidz; 02-09-2011 at 08:56 AM.
 
Old 02-10-2011, 04:05 PM   #9
nine9nine
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I tried what you said and when I put "sudo iwlist wlan0 scan" I got: wlan0 No scan results

my lsmod out put is:


Module Size Used by
binfmt_misc 7984 1
parport_pc 30086 0
ppdev 6804 0
dm_crypt 13381 0
snd_hda_codec_conexant 37356 1
snd_hda_intel 26019 2
arc4 1497 2
snd_hda_codec 100919 2 snd_hda_codec_conexant,snd_hda_intel
snd_hwdep 6660 1 snd_hda_codec
snd_pcm 89104 2 snd_hda_intel,snd_hda_codec
snd_seq_midi 5932 0
ath9k 110723 0
mac80211 283145 1 ath9k
ath9k_common 3143 1 ath9k
snd_rawmidi 22207 1 snd_seq_midi
snd_seq_midi_event 7291 1 snd_seq_midi
snd_seq 57512 2 snd_seq_midi,snd_seq_midi_event
ath9k_hw 310959 2 ath9k,ath9k_common
snd_timer 23850 2 snd_pcm,snd_seq
snd_seq_device 6912 3 snd_seq_midi,snd_rawmidi,snd_seq
joydev 11363 0
ath 16663 2 ath9k,ath9k_hw
snd 64117 13 snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,s nd_seq_device
cfg80211 173340 3 ath9k,mac80211,ath
soundcore 1240 1 snd
snd_page_alloc 8588 2 snd_hda_intel,snd_pcm
psmouse 62080 0
compat 7685 3 ath9k,mac80211,cfg80211
lp 10201 0
serio_raw 4910 0
led_class 3393 2 ath9k,compat
parport 37032 3 parport_pc,ppdev,lp
dm_raid45 75026 0
xor 4709 1 dm_raid45
btrfs 506518 0
zlib_deflate 21866 1 btrfs
crc32c 3007 1
libcrc32c 1268 1 btrfs
i915 330089 3
drm_kms_helper 32836 1 i915
drm 206161 4 i915,drm_kms_helper
ahci 21857 0
i2c_algo_bit 6208 1 i915
video 22176 1 i915
libahci 26167 3 ahci
output 2527 1 video
atl1c 34955 0
intel_agp 32080 2 i915
 
  


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