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Old 12-03-2009, 09:34 AM   #1
elusive_night
LQ Newbie
 
Registered: Jun 2009
Posts: 25

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Kubuntu Wireless Issue (BCM4312)


Hello,

I'm having problems with my wireless card on my Kubuntu laptop.
Details on the laptop is a Dell Vostro 1000 with a Broadcom 4312 802.11 b/g (rev 01).

When I installed Kubuntu 9.04 the wireless card did not work, so I followed a whole bunch of different tuts and finally got it working fine, however it did drop the connection fairly often.

Then the update came out, which completely buggered the wireless, so after following a few more tutorials managed to get it working, with the connection dropping still occuring, but working never-the-less!

So randomly one day, I log on to find the wireless card is not being detected, the light doesnt come on saying its activated, no wireless networks show, and ifconfig shows no eth1.

I had made absolutely no changes to the laptop at all, nor had I run any updates. Very odd!

So after trying and endlessly failing, I booted up the older Kernel and the wireless card works fine (but still dropping out, which I can live with for no).

lspci gives the following:

Quote:
00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:05.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:06.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:12.0 SATA controller: ATI Technologies Inc SB600 Non-Raid-5 SATA
00:13.0 USB Controller: ATI Technologies Inc SB600 USB (OHCI0)
00:13.1 USB Controller: ATI Technologies Inc SB600 USB (OHCI1)
00:13.2 USB Controller: ATI Technologies Inc SB600 USB (OHCI2)
00:13.3 USB Controller: ATI Technologies Inc SB600 USB (OHCI3)
00:13.4 USB Controller: ATI Technologies Inc SB600 USB (OHCI4)
00:13.5 USB Controller: ATI Technologies Inc SB600 USB Controller (EHCI)
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 14)
00:14.1 IDE interface: ATI Technologies Inc SB600 IDE
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB600 PCI to LPC Bridge
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS482 [Radeon Xpress 200]
05:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01)
08:00.0 Ethernet controller: Broadcom Corporation BCM4401-B0 100Base-TX (rev 02)
08:01.0 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
08:01.1 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
That result is exactly the same on both kernel versions.

uname -r gives the following:
Quote:
2.6.31-14-generic
How should I proceed?

Thanks in advance for your time!

EN
 
Old 12-03-2009, 09:49 AM   #2
elusive_night
LQ Newbie
 
Registered: Jun 2009
Posts: 25

Original Poster
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Sorry just to ensure up to date information is given:

Last night I tried the tuts at the following site with no avail:

http://linuxwireless.org/en/users/Drivers/b43

Thanks all,

EN
 
Old 12-03-2009, 12:48 PM   #3
Hangdog42
LQ Veteran
 
Registered: Feb 2003
Location: Maryland
Distribution: Slackware
Posts: 7,791
Blog Entries: 1

Rep: Reputation: 414Reputation: 414Reputation: 414Reputation: 414Reputation: 414
The 4312 is actually supported by Broadcom's proprietary Linux driver. I suspect that there is a package available for it if you don't want to compile from source.
 
  


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