DWL_G122 B1 - driver performance, Fedora 7

Live forum: http://rt2x00.serialmonkey.com/viewtopic.php?t=4428

phe

11-11-2007 15:15:29

Hello,

I am running Fedora 7 with DWL-G122 version B1.
I use the "standard" build in driver.

it presents me the interface as WLAN0
When I type /sbin/modinfo rt2500usb

I get following information
[code29tij0jy]filename: /lib/modules/2.6.23.1-21.fc7/kernel/drivers/net/wireless/rt2x00/rt2500usb.ko
license: GPL
description: Ralink RT2500 USB Wireless LAN driver.
version: 2.0.8
author: http://rt2x00.serialmonkey.com
srcversion: BC99198B05A7C4A6E908023
alias: usb:v5A57p0260d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0EB0p9020d*dc*dsc*dp*ic*isc*ip*

. . . . .
. . . .
alias: usb:v0B05p1707d*dc*dsc*dp*ic*isc*ip*
alias: usb:v0B05p1706d*dc*dsc*dp*ic*isc*ip*
depends: rt2x00lib,rt2x00usb
vermagic: 2.6.23.1-21.fc7 SMP mod_unload 686 4KSTACKS
[/code29tij0jy]

On the site I see the last version of the driver is V1.1.0-b2

I have the impression my actual driver is not as good as the windoz driver.
(I use my machine in multiboot als with XP, and there I have a more stable connection)
Would it have sense to swith to your driver ?
Can I keep my existing driver (in backup, in case of problems ? How)

I've read als some information about ndiswrapper.
What is the difference in performance between ndiswrapper and your driver ?


regards phe

Spy84464

13-11-2007 18:47:55

Hello,
You are using rt2x00, our new driver, which is still in development. Meanwhile, you might get better performances with, what we call, the legacy driver. Get the CVS version, not the "latest" beta though.
I don't know how ndiswrapper performs.

Regards,
Romain

phe

13-11-2007 20:44:07

Hello,
You are using rt2x00, our new driver, which is still in development. Meanwhile, you might get better performances with, what we call, the legacy driver. Get the CVS version, not the "latest" beta though.
I don't know how ndiswrapper performs.

Regards,
Romain[/quote1rall6gv]

I will give it a try.

I will blacklist this driver, and then install the legacy one !

What is your advice in blacklisting the driver ?
(I hope to get back to the driver in an easy way in case of problems with the lecay one)

regards,

phe

Starcrasher

14-11-2007 10:15:46

blacklist is a keyword to say "Do not load that module automatically"
Since, the new rt2x00 driver and the legacy drivers are for same pieces of hardware, they will both be loaded. To avoid that, you need to blacklist the module you don't want to use.
To blacklist a particular module, add the line
[i2uqt0csa]blacklist name_of_the_module[/i2uqt0csa] in your /etc/modprobe.conf or in a file named blacklist in /etc/modprobe.d folder. This really depend on your distribution.

In your case, to use the legacy driver, you will add
blacklist rt2500usb
blacklist rt2500pci
blacklist rt2x00lib

To use back the driver shipped by your distribution, you will add
blacklist rt2570
and remove the three lines above.

Be aware that the legacy driver doesn't use and doesn't like wpa_supplicant. You will have to use iwpriv to authenticate if you use encryption. All the needed documentation is in the module archive.
Once, you have it working manually, give RutilT a try. But, if you switch driver back, remember that RutilT do not support the new driver for the moment.

Regards,
Alex

tekknokrat

26-11-2007 12:05:48

question is there still the issue with the legacy (2570 driver) that this one doesnt work with smp enabled kernels or are there some patches for workaround?

In the past I had ubuntu feisty installed where 2570 was still builtin with restricted-modules (don't know if it was nonsmp kernel ).

Then I had a harddrive crash which rendered boot impossible so I made a new installation with 7.10 (gutsy) which does not seem too have this driver included by default and doesnt let me build the driver from source because of smp enabled in kernel!

tekknokrat

26-11-2007 12:08:46

ooops,

missed this sticky.

http//rt2x00.serialmonkey.com/phpBB2/v ... php?t=3676

Where can I find feedback for rt2570 with smp-kernels?

Spy84464

26-11-2007 23:32:52

Hello,
It should work okay on smp kernel now. I haven't seen a post stating it does, but nobody complained either. Just make sure you install the latest CVS tarball, not the beta release.

Regards,
Romain