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Old 02-28-2007, 12:08 AM   #1
Registered: Aug 2003
Location: New Delhi, India
Distribution: Fedora Core 6 x64 , Bluewhite64
Posts: 32

Rep: Reputation: 15
cpu speed governor and wireless queries

i have installed bluewhite64 (64bit slackware port) on my compaq v3133au laptop (AMD turion64x2).
The laptop comes with a Broadcom BCM43xx a/b/g wireless card.

Also compiled a new 2.6.20 customized kernel for my hardware.

1. During bootup, i observe that the broadcom wireless adaptor is detected and the corresponding bcm43xx modules get loaded. However, I cant see any wireless interface using "ifconfig". I also tried to use the KDE wifitools but it couldn't detect the card.

2. The kernel that i compiled has module support for cpufreq and userspace governors. I load the module using the
modprobe cpufreq_ondemand
and it gets loaded. However, the CPU still runs at the full 1.6GHz speed.
Also in the sys file system, I am not able to find the cpufreq entries in the /sys/.../cpu0/ location.

Old 02-28-2007, 04:27 PM   #2
Registered: Jan 2006
Distribution: Debian
Posts: 90

Rep: Reputation: 15

I don't know whether bluewhite implements wireless configuration differently but 'iwconfig' is the command to configure wireless devices in all the linux distros I've used.

Try iwconfig and see if theres any wireless devices listed, if there aren't remove the bcm43xx module from the kernel with:

rmmod bcm43xx

then reinsert it with

modprobe bcm43xx

then try iwconfig again to see if there are any wireless devices listed, this works for me when my wireless card driver plays up.

Old 02-28-2007, 05:00 PM   #3
Senior Member
Registered: Sep 2005
Location: Out
Posts: 3,307

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Do you do ifconfig or ifconfig -a ? ifconfig only show the interface which are up. -a lists them all, even the ones unconfigured.

Loading only the governor won't put anything in /sys. Have you also manually modprobed the cpufreq module? I don't know the name of yours, mine is speedstep-centrino. And their's no dependencies between both so one won't load the other automatically.
Old 02-28-2007, 09:51 PM   #4
Registered: Aug 2003
Location: New Delhi, India
Distribution: Fedora Core 6 x64 , Bluewhite64
Posts: 32

Original Poster
Rep: Reputation: 15
ok thanks for the suggestions..
i will try these and will let you know how it goes..



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