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Old 05-18-2011, 12:24 PM   #1
odin_ago
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Registered: Mar 2011
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Broadcom wifi card works with Mandriva liveCD but not with Gentoo liveDVD


I am going to install linux, and first I want to try it using liveCDs. Wifi works correctly with Mandriva liveCD, but it does not work very good with Gentoo liveDVD.

Namely,
Code:
ifconfig wlan0 up
in gentoo does not actuallu bring the wifi card up,
Code:
ifconfig
does not list wlan0 after it, while
Code:
ifconfig -a
does.

After that,
Code:
dmesg |tail
says:

Code:
[ 2435.642865] b43-phy0 ERROR: Firmware file "b43/ucode15.fw" not found
[ 2435.642869] b43-phy0 ERROR: Firmware file "b43-open/ucode15.fw" not found
[ 2435.642872] b43-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website.
The wepage referred in the last line says, in particular, that the subfolder b43 must be in /lib/firmware. There is no b43 or b43-open in /lib/fimware, right, but there is no b43 in /lib/firmware when I boot from Mandriva liveCD either. But wifi works with Mandriva. Why?

And another question. Is there a command that shows what firmware is used by a certain device?
 
Old 05-19-2011, 05:29 AM   #2
Soadyheid
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Registered: Aug 2010
Location: Near Edinburgh, Scotland
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Different Linux distributions have different hardware support. Mandriva is a general purpose distribution where most hardware is supported out of the box. Gentoo is a Distribution which is actually compiled on your system so the Live CD is very light when it comes to hardware support. You have to select various hardware devices in your kernel configuration file to allow it compile properly. This results in Gentoo having a pretty light kernel which covers only the hardware you have installed, where Mandriva and some of the more popular distributions, have kernels which contain code for hardware you haven't got fitted!

In other words... Mandriva; of-the-peg Kernel. Gentoo; bespoke, made-to-measure.

Does that Make sense?

Play Bonny!
 
Old 05-19-2011, 05:36 AM   #3
Soadyheid
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Registered: Aug 2010
Location: Near Edinburgh, Scotland
Posts: 774

Rep: Reputation: 126Reputation: 126
Oops!

Different Linux distributions have different hardware support. Mandriva is a general purpose distribution where most hardware is supported out of the box. Gentoo is a Distribution which is actually compiled on your system so the Live CD is very light when it comes to hardware support. You have to select various hardware devices in your kernel configuration file to allow it compile properly. This results in Gentoo having a pretty light kernel which covers only the hardware you have installed, where Mandriva and some of the more popular distributions, have kernels which contain code for hardware you haven't got fitted!

In other words... Mandriva; of-the-peg Kernel. Gentoo; bespoke, made-to-measure.

I usually use dmesg to find firmware requirements (as you have above, the fimware file is "ucode15.fw" but you knew that.) Live CDs run in memeory so I'm not sure if they have some sort of minimal file system

Does that Make sense?

Play Bonny!

Last edited by Soadyheid; 05-19-2011 at 05:40 AM. Reason: Oh Dear! didn't mean to double post.... Sort of!
 
  


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