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Old 04-09-2010, 02:03 AM   #1
rose09
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Question Help on fedora 12


Hi ,

I wanna see the wifi signal strength.But when i run the command iwconfig , it tells me 'no wireless extensions'.By googling I found that I need to enable config option CONFIG_NET_RADIO.I see that this has to be done in boot which has config files.So I typed the command grep CONFIG_NET_RADIO /boot/<config-2.6.31.5-127.fc12.i686> (my fedora version is 2.6.31.5-127.fc12.i686).But I got the error as "bash: syntax error near unexpected token `newline' ".I dont know the reason.I also want to know if I have to install driver(ndiswrapper)for viewing wireless signal strength.I thought that the drivers will present default(am not sure).Any help is appreciated

Thanks
Rose09
 
Old 04-09-2010, 08:10 AM   #2
soleil24
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"no wireless extensions" would suggest your wireless network adapter isn't set up.

First question, what wireless adapter do you have? The majority of "common" adapters are supported without the need for 3rd party tools like ndiswrapper (which allows use of Windows drivers).

Identify the adapter & the connectivity problem can be taken from there, so you can ultimately discover signal strength !
 
Old 04-09-2010, 04:42 PM   #3
rose09
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Hi,

Thanks for the reply.My card is Intel(R) Wifi Link 5100 AGN.
 
Old 04-10-2010, 02:17 PM   #4
rose09
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--------------------------------------------------------------------------------

I have seen that wireless connections are off.The network is connected to wired system "Auto Eth1".I dont see any wireless connections(linksys,belkin which i generally see in Windows).I have not installed the wireless tools and wireless extensions.Is this the problem?Ok now I have installed them.But when I go to terminal and change directory to wireless_tools.29 to type 'make install' the error is as follows.

fgcc -Os -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow -Wpointer-arith -Wcast-qual -Winline -I. -MMD -fPIC -c -o iwlib.so iwlib.c
make: gcc: Command not found
make: *** [iwlib.so] Error 127


From googling found that there is a mistake in make file.I donno what it is.Do I need to install gcc compiler?Thanks for the replies.

Thanks
Rose09
 
Old 04-10-2010, 07:19 PM   #5
soleil24
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The "Belikin, Linksys" connections you mention are probably your wireless access points, which Windows will show as you have a wireless connection.

The iwlist output is suggesting you have no wireless connection in F12.

But I'm pretty sure the Intel 5100 has been included in the kernel since before F12 (it's the wireless card used in the latest Thinkpads - e.g. T400) so you shouldn't be needing to download, install or compile anything.

Entering lspci at a command prompt will show all devices on the PCI bus (which should include your wireless card), so for example on my antique T60:

Code:
01:00.0 VGA compatible controller: ATI Technologies Inc M52 [Mobility Radeon X1300]
02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
3 entries showing the video adapter, wired network adapter and wireless adapter.

ifconfig command shows how the network is configured, again on my T60:

Code:
eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          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)              
          Memory:ee000000-ee020000                            

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:30 errors:0 dropped:0 overruns:0 frame:0
          TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0                            
          RX bytes:2068 (2.0 KiB)  TX bytes:2068 (2.0 KiB)     

wlan0     Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx  
          inet addr:192.168.1.102  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: <ignore this string>
Scope:Link               
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1              
          RX packets:11198 errors:0 dropped:0 overruns:0 frame:0          
          TX packets:7237 errors:0 dropped:0 overruns:0 carrier:0         
          collisions:0 txqueuelen:1000                                    
          RX bytes:15168101 (14.4 MiB)  TX bytes:874592 (854.0 KiB)

This is a fresh "out of the box" install btw - no additional config required to get this far, just default settings with a simple wireless network config using network manager (graphical mode, no command line used).

Just a thought, if we are looking at a laptop here does it have a physical on/off switch for the wifi?

Last edited by soleil24; 04-10-2010 at 07:36 PM. Reason: paranoia edit: to hide "real" ipv6 and mac addresses
 
Old 04-10-2010, 07:26 PM   #6
pixellany
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You should find wireless tools and other general-purpose stuff with the package manager---no need to compile anything.

There should also be a driver (or firmware) for your wireless. Just search in the package manager using "5100".

Push comes to shove, go to the Intel site and read the instructions there. (Intel wireless stuff is well-supported for Linux)
 
Old 04-10-2010, 07:55 PM   #7
soleil24
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btw, the easy (graphical) way to look at network setup is from the Applications tab on the "start" menu, go to Internet and then Network Device Control
 
Old 04-10-2010, 08:19 PM   #8
soleil24
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Looks like the 5100 support has been in the kernel since 2.6.27.

You can check your kernel version with uname -r

Code:
[ian@t60-f12 ~]$ uname -r
2.6.31.5-127.fc12.i686
As you can see, my F12 is at 2.6.31 (and yes I know I'm not using the 64bit version - my choice ! )

The driver should be iwlagn

Command lsmod will show if this is loaded
 
Old 04-11-2010, 08:03 AM   #9
pixellany
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Quote:
Originally Posted by soleil24 View Post
Looks like the 5100 support has been in the kernel since 2.6.27.
But you still need the firmware, if I am not mistaken....
 
  


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