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  #1  
Old 4th January 2011, 11:26 PM
sheris Offline
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linuxfedorafirefox
Wireless Network Adapter not detected - Dell Inspiron E1750

Hi,
I am very new to Linux, today my windows crashed and i decided to move into Linux.
But here comes my biggest problem now, i cannot connect to wireless network but i am able to connect through wired connection.
mine is a 10 year old computer so i think the card used is Intel PRO/Wireless 3945ABG

Somebody please help me, i am using Fedora 14. please note that i know only very little in Linux so please respond accordingly :-)

Thanks for your support in advance.
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  #2  
Old 5th January 2011, 12:02 AM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Quote:
Originally Posted by sheris

i think the card used is Intel PRO/Wireless 3945ABG
You need to establish that with certainty. The wireless adapter is likely using the PCI bus, so this terminal command in Fedora 14 may identify it...
Code:
lspci
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  #3  
Old 5th January 2011, 12:39 AM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Hello, thanks for your reply.
I tried the command and got the following.
Can you please let me know what does this mean?
what should i do next to connect to wireless network?
Thanks

root@jessy ~]# lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01)
00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 4 (rev 01)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01)
03:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
03:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller
03:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19)
03:01.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a)
03:01.3 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05)
0c:00.0 Network controller: Broadcom Corporation BCM4321 802.11a/b/g/n (rev 01)
[root@jessy ~]#
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  #4  
Old 5th January 2011, 01:03 AM
dd_wizard Online
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linuxfirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Hi sheris,

The last line of output from the lspci command indicates that your laptop has a Broadcom 4321 wireless chipset. I've never had to install those drivers before, but I believe they're in the RPMFusion repository. If you click in the search button at the top of the page and use Google search on the Fedora forums, you'll find a lot of threads about the BCM4321. Those should help you get your WiFi working. Also, the yellow "Fedora Set-Up Guides" button has a link for setting up RPMFusion. You'll definitely want that repository available to get things like media players, mp3, etc. working.

Hope that helps,
dd_wizard
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  #5  
Old 5th January 2011, 05:17 AM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

I tried everything and install many drivers for BCM4321 , wireless still not working.
can somebody please help me on this, Thanks
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  #6  
Old 5th January 2011, 05:25 AM
pythagorean Offline
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Re: Wireless Network Adapter not detected - Dell Inspiron E1750

It's actually very easy...

http://forums.fedoraforum.org/showthread.php?t=239922
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  #7  
Old 5th January 2011, 03:18 PM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Quote:
Originally Posted by sheris

I tried everything and install many drivers for BCM4321 , wireless still not working.
can somebody please help me on this, Thanks
I think you already have seen that Broadcom HOWTO. Apparently, something about your situation is wrong or went wrong. Here is what I think you need to do...

The BCM4321 chipset is known to work with the broadcom-wl driver. IMO, your best chance of success is with that. First, since you can connect to the Internet with your wired NIC, you should install the RPM Fusion repos. If you think you already have done that, then open a terminal and confirm it by entering the following command at the command prompt...
Code:
yum repolist
If the output of that command does not list the rpmfusion-free and rpmfusion-nonfree repos, then install them now with these commands that I copied from RPM Fusion. You can just copy from here and paste them into the terminal one line at a time...
Code:
su
yum localinstall --nogpgcheck http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm
yum localinstall --nogpgcheck http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm
After that, confirm the installed repos again. If the repos are all set now, then install the driver...
Code:
su
yum install akmod-wl
After that, reboot and check the NetworkManager panel icon for available networks and connect. If it doesn't work at first, then try the "things to do if it doesn't work" back in section #2 of that Broadcom HOWTO. But return here to continue on with questions or for help with problems.
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  #8  
Old 5th January 2011, 09:44 PM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

I tried the same, its says package already installed nothing to do.
I tired all the steps in the forum if not working, still no use.

Can i re-install the driver? how can i remove and re-install? will that help?
What other things can i do?

Thanks
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  #9  
Old 5th January 2011, 10:46 PM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Quote:
Originally Posted by sheris

What other things can i do?
The only thing you can do, IMO, is to walk yourself through the usual troubleshooting steps here with helpers. I recommend that you run the following commands and then paste the results in your next post for your readers to look over your shoulder at this stuff.

I would start by confirming that the kmods were built for the running kernel and that the wl module is loaded...
Code:
uname -r
rpm -qa | grep -e kernel -e kmod-wl -e broadcom-wl | sort
lsmod | sort
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  #10  
Old 5th January 2011, 11:02 PM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Hi,
Thanks for the help, here are the results:

[jessy@jessy ~]$ uname -r
2.6.35.10-74.fc14.i686.PAE

[jessy@jessy ~]$ rpm -qa | grep -e kernel -e kmod-wl -e broadcom-wl | sort
abrt-addon-kerneloops-1.1.14-1.fc14.i686
akmod-wl-5.60.48.36-2.fc14.1.i686
broadcom-wl-5.60.48.36-1.fc13.noarch
kernel-2.6.35.10-74.fc14.i686
kernel-devel-2.6.35.10-74.fc14.i686
kernel-headers-2.6.35.10-74.fc14.i686
kernel-PAE-2.6.35.10-74.fc14.i686
kmod-wl-2.6.35.10-74.fc14.i686-5.60.48.36-2.fc14.7.i686
kmod-wl-2.6.35.10-74.fc14.i686.PAE-5.60.48.36-2.fc14.7.i686
kmod-wl-5.60.48.36-2.fc14.7.i686
kmod-wl-PAE-5.60.48.36-2.fc14.7.i686


[jessy@jessy ~]$ lsmod | sort
acpi_cpufreq 6285 0
b44 22294 0
cpufreq_ondemand 7262 2
crc_itu_t 1235 1 firewire_core
dcdbas 6648 1 dell_laptop
dell_laptop 5433 0
drm 139800 3 i915,drm_kms_helper
drm_kms_helper 22278 1 i915
firewire_core 37917 1 firewire_ohci
firewire_ohci 18005 0
fuse 51544 3
i2c_algo_bit 4197 1 i915
i2c_core 21328 5 i2c_i801,i915,drm_kms_helper,drm,i2c_algo_bit
i2c_i801 9016 0
i915 242363 3
ip6table_filter 1207 1
ip6_tables 9929 1 ip6table_filter
ip6t_REJECT 3470 2
ipv6 229581 30 ip6t_REJECT,nf_conntrack_ipv6
iTCO_vendor_support 2070 1 iTCO_wdt
iTCO_wdt 8980 0
joydev 7306 0
lib80211 4107 1 wl
microcode 11139 0
mii 3578 1 b44
mmc_core 53218 2 ssb,sdhci
Module Size Used by
mperf 1141 1 acpi_cpufreq
mtd 15282 2 sm_common,nand
nand 28994 2 r852,sm_common
nand_ecc 3460 1 nand
nand_ids 2730 1 nand
nf_conntrack_ipv6 14441 2
output 1625 1 video
r852 8338 0
rfkill 13652 2 dell_laptop
sdhci 15773 1 sdhci_pci
sdhci_pci 6278 0
sm_common 3104 1 r852
snd 47365 12 snd_hda_codec_idt,snd_hda_intel,snd_hda_codec,snd_ hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timer
snd_hda_codec 71701 2 snd_hda_codec_idt,snd_hda_intel
snd_hda_codec_idt 45770 1
snd_hda_intel 20227 2
snd_hwdep 4795 1 snd_hda_codec
snd_page_alloc 6244 2 snd_hda_intel,snd_pcm
snd_pcm 61877 2 snd_hda_intel,snd_hda_codec
snd_seq 43447 0
snd_seq_device 5056 1 snd_seq
snd_timer 15435 2 snd_seq,snd_pcm
soundcore 5088 1 snd
ssb 42105 1 b44
sunrpc 165482 1
uinput 5228 0
video 17730 1 i915
wl 1954536 0
[jessy@jessy ~]$

---------- Post added at 10:02 PM ---------- Previous post was at 10:01 PM ----------

can you please see i have installed any conflicting drivers.
but i tried blacklisting and nothing showed up, Thanks
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  #11  
Old 5th January 2011, 11:16 PM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

The installed packages look good and appropriate for the kernels.

The wl module is loaded.

A possible conflict could come from b44 and ssb. That b44 module is an Ethernet driver, and you need that for an Ethernet card. And b44 needs ssb. But those two have been known to cause problems for broadcom-wl. It has been documented here that broadcom-wl sometimes starts working after those modules are blacklisted.

But before you blacklist modules (and bust the wired NIC), take a moment to describe what you are observing there. What specifically is the problem now? Left-click the NetworkManager panel icon and look for available networks. Are there none listed when some are known to be in range? Or, are networks listed, but you can't connect? Is NetworkManager showing the wireless as disabled? Is the NetworkManager panel icon there? Are you even using NetworkManager? Maybe I shouldn't have assumed that.
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  #12  
Old 5th January 2011, 11:22 PM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Network Manager is not at all showing any options for wireless, it displays the following

Wired Network
System eth0
Disconnect
VPN Connections
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  #13  
Old 5th January 2011, 11:27 PM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Take moment to look for something disabling the wireless device (it happens all the time). Consider things such as a BIOS setting, a physical on-of switch somewhere on the computer or card, a software switch or hotkey, or rfkill. That rfkill thing comes up often. Go here for how to check it and do something about it if necessary...
http://fedoraforum.org/forum/showthread.php?t=249577
http://fedoraforum.org/forum/showthread.php?t=245404
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  #14  
Old 6th January 2011, 12:00 AM
sheris Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

I tried doing that, there is no wifi blocking.

[jessy@jessy ~]$ rfkill list
0: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no

I need wifi more than wired connection. can we try of removing b44 driver.
will that work? what command should i use to remove that.

---------- Post added at 11:00 PM ---------- Previous post was at 10:59 PM ----------

Checked the switch and wireless setup in BIOS, its also enabled
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  #15  
Old 6th January 2011, 12:17 AM
stoat Offline
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linuxfedorafirefox
Re: Wireless Network Adapter not detected - Dell Inspiron E1750

Maybe you could test the idea first by manually removing those modules and restarting NetworkManager. If it works, good. Then you can blacklist them permanently.
Code:
su
modprobe -r b44
modprobe -r ssb
service NetworkManager restart
Give that a few seconds to get going again and check the NetworkManager panel icon for available wireless networks. If the idea doesn't work, no harm was done. The Ethernet modules will reload next boot or can be manually reloaded with modprobe.
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