5 Cups of Ubuntu
Same here, and that's 5GHz with WPA2 even (which never worked before, with either driver).Originally Posted by ReginaldPerrin3
HOWEVER... the performance is unusable. Frequent (as in about 25% of requests) huge lags plague both HTML and even SSH requests. A couple pages will work fine then one will hang for several seconds. Yet thruput and ping are good when doing a speedtest. I changed back to 2.4GHz (which gets interrupted every time the cordless phone is used) and it works fine.
Spilled the Beans
Performance on my test machines is just fine. Can happily achieve TCP rates somewhere around 80Mbps and UDP around 130Mbps. Equipment used is a Cisco 1252 Access Point, and an Apple Airport Extreme, as well as several WUSB600Ns.
I used Netperf to get these results.
Best results come using the 5GHz network, obviously. The 2.4GHz networks will always be plagued by cordless telephones, baby monitors, garage door openers, microwave ovens, and of course all the other 2.4GHz home networks within any sort of range.
Spilled the Beans
And now I realise, of course, that the process of ensuring that Ubuntu is using the correct driver should be repeated (ie: the driver reinstalled) with every update to the kernel. This only means altering the command (in previous posts) to insert the driver (rt2870sta) into the correct kernel-version folders.
It would be nice to write a script to do all of that automatically upon detection of kernel version change, but I am not familiar enough with scripting to write one up.
I suppose that the script would have to be somewhat customised seeing as how the compiled driver may not be stored in the same place in all people's computers.
I will give this much thought, and see what I can come up with (open source of course!).
I have some test machines that I can sort of afford to break a few times, so this will not be much of a problem.
Spilled the Beans
Not necessarily, especially if the guide itself is revised. Here's how to modify the source code from scratch, then install the user-compiled rt2870 driver via BASH script. The first three steps here are identical to those of the original instructions on the first page of this thread.Originally Posted by ReginaldPerrin3
I suppose that the script would have to be somewhat customised seeing as how the compiled driver may not be stored in the same place in all people's computers
1. Download the rt2870USB driver to your downloads file from the Ralink website: http://www.ralinktech.com/support.php?s=2
Right click to extract the file. Rename the extracted file "RT2870".
2. Open the source code file "~/Downloads/R2870/os/linux/config.mk" and change the following two values from "=n" to "=y" so that the result is:
Save and exit.Code:HAS_WPA_SUPPLICANT=y HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=y
3. Open "~/Downloads/R2870/common/cmm_wpa.c" and change the character encoding to Western if needed. Use control+f to search for
Highlight MIX_CIPHER_NOTUSE and copy-pasteCode:MIX_CIPHER_NOTUSE
into its place. Save and exit.Code:WPA_TKIPAES_WPA2_TKIPAES
4. In Terminal, runand addCode:gksudo gedit /etc/modulesat the bottom to tell Ubuntu to load the driver at startup.Code:rt2870sta
Now you've modified the source files in the same was as in the first guide. I'm working on a way to automate this, but it will have to be manual for now.
4. It would be annoying to edit that code every time the driver needed recompiling, so we want to put it somewhere permanently.
5. Now for the script. It reads from the /usr/src/RT2870 directory no matter what kernel version you have. Copy and paste the following into a blank gedit document. Save it as "rt2870_install.sh" in your Documents directory.Code:sudo mv ~/Downloads/RT2870 /usr/src/
6. Any time you need to reinstall the modified driver, open up Terminal and typeCode:#!/bin/bash cd /usr/src/RT2870 make make install ifconfig wlan0 down rmmod rt2870sta cd /lib/modules/`uname -r`/kernel/drivers/staging/rt2870/ sudo mv rt2870sta.ko rt2870sta.ko.dist cd /usr/src/RT2870/os/linux sudo cp rt2870sta.ko /lib/modules/`uname -r`/kernel/drivers/staging/rt2870/ modprobe rt2870sta exit 0
which will run the script and do the dirty work for you.Code:sudo sh ~/Documents/rt2870_install.sh
*About the script: the modprobe rt2870sta is intended to start the modified driver immediately, without having to reboot. However, I've always had to reboot to initialize the module. Also, I have found a way to determine if there has been a kernel update through a bash script and then automatically reinstall the modified driver, but I don't know how to use Upstart to initialize it with root privileges at startup. If anyone knows how to do this or clean up the above script, let us know!
Last edited by Dev0; July 1st, 2010 at 05:27 PM.
Staff Emeritus
Just to be clear, you can't simply copy the rt2870sta.ko file into the new kernel folder under /lib/modules; you have to recompile the module against the new kernel (i.e., you have to compile it while running the new kernel, or pass arguments to the compiler to specify which kernel the module needs to work with before it gets compiled) or it won't work with that kernel.This only means altering the command (in previous posts) to insert the driver (rt2870sta) into the correct kernel-version folders.
Dev0's instructions above should help you out. If you wanted, I suppose you could follow them so that you could recompile the module with one simple command. Then you could create a boot script that would test during boot to see if your currently running kernel has the rt2870sta module installed, and if not, compile and install it automatically. Of course, there are plenty of other ways you do this; that's just an idea.
First Cup of Ubuntu
I followed the below steps but still nothing. There is an error when running the "sudo sh ~/Documents/rt2870_install.sh" command in the terminal
The following is the error i get when installing the source code from the script.
make -C tools
make[1]: Entering directory `/usr/src/RT2870/tools'
gcc -g bin2h.c -o bin2h
make[1]: Leaving directory `/usr/src/RT2870/tools'
/usr/src/RT2870/tools/bin2h
cp -f os/linux/Makefile.6 /usr/src/RT2870/os/linux/Makefile
make -C /lib/modules/2.6.32-24-generic/build SUBDIRS=/usr/src/RT2870/os/linux modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.32-24-generic'
CC [M] /usr/src/RT2870/os/linux/../../common/rtmp_mcu.o
LD [M] /usr/src/RT2870/os/linux/rt2870sta.o
Building modules, stage 2.
MODPOST 1 modules
LD [M] /usr/src/RT2870/os/linux/rt2870sta.ko
make[1]: Leaving directory `/usr/src/linux-headers-2.6.32-24-generic'
make -C /usr/src/RT2870/os/linux -f Makefile.6 install
mkdir: cannot create directory `/etc/Wireless': File exists
make[1]: Entering directory `/usr/src/RT2870/os/linux'
rm -rf /etc/Wireless/RT2870STA
mkdir /etc/Wireless/RT2870STA
cp /usr/src/RT2870/RT2870STA.dat /etc/Wireless/RT2870STA/.
install -d /lib/modules/2.6.32-24-generic/kernel/drivers/net/wireless/
install -m 644 -c rt2870sta.ko /lib/modules/2.6.32-24-generic/kernel/drivers/net/wireless/
/sbin/depmod -a 2.6.32-24-generic
make[1]: Leaving directory `/usr/src/RT2870/os/linux'
wlan0: ERROR while getting interface flags: No such device
That is the entire output of the command when run. This output is the second time running the script. I originally did all the steps and then ran the script and it got errors similar to the one above but it also listed a directory not found. Following rebooting the computer, and wireless still not working i ran the script again and the above is the entire output.
Please help as to what i'm doing wrong, or how to fix this flag error.
Staff Emeritus
I suspect you're getting that error message because of the line in the script that reads:That is the entire output of the command when run. This output is the second time running the script. I originally did all the steps and then ran the script and it got errors similar to the one above but it also listed a directory not found. Following rebooting the computer, and wireless still not working i ran the script again and the above is the entire output.
Please help as to what i'm doing wrong, or how to fix this flag error.
It looks like the interface 'wlan0' doesn't exist. Chances are it's named 'wlan1' or something similar on your computer--this is normal. Changing the script accordingly should allow it to complete without errors.Code:ifconfig wlan0 down
To find the name of your wireless interface, type:
You'll get output that looks something like:Code:ifconfig -a
Code:wlan0 Link encap:Ethernet HWaddr 00:19:21:85:0d:87 inet addr:192.168.2.6 Bcast:192.168.2.255 Mask:255.255.255.0 inet6 addr: fe80::219:21ff:fe85:d87/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1501422 errors:0 dropped:0 overruns:0 frame:0 TX packets:1037223 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1840839745 (1.8 GB) TX bytes:161668870 (161.6 MB) Interrupt:20 Base address:0xe800 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:61419 errors:0 dropped:0 overruns:0 frame:0 TX packets:61419 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:16715204 (16.7 MB) TX bytes:16715204 (16.7 MB)
In the example above, the name of my interface is in bold. Look for an interface in your outupt whose name starts with 'wlan...', then edit your script so that the name of this interface replaces 'wlan0', then try running the script again. Does this work?
First Cup of Ubuntu
The following is the output of the terminal of the iwconfig command and ifconfig -a command.
output:
~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:1f:e2:3c:58:3c
inet addr:192.168.1.145 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21f:e2ff:fe3c:583c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29788 errors:0 dropped:0 overruns:0 frame:0
TX packets:20857 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:42320515 (42.3 MB) TX bytes:1808534 (1.8 MB)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:12 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:720 (720.0 B) TX bytes:720 (720.0 B)
not sure what i'm looking for when it comes to getting the information about what the right flag is. it doesn't look like any wireless exists. how would i go about getting that to show up that i have plugged in a wireless device and that i have another device to show up in this list.
Many Thanks,
Ons
5 Cups of Ubuntu
Post #46 on page 5 of thread Re: Howto: Ralink RT2860 (m)PCI(e) (RT2760/RT2790/RT2860/RT2890) on Intrepid
will supply a once and for all definitive solution to any Ralink RT2860 Wireless (WPA2 encrypted) not working with Ubuntu 10.04 Netbook Edition.
Your travails trying to understand the Linux world remind me of the agony I used to suffer before I went back to "Simple is beautiful". There is nothing easier than installing Ubuntu 10.04 as a virtual machine in VMware Player 3.1.1, which is completely free for home or personal non-profit use.
Anybody who says this is overkill is correct but I don't need to waste any time trying to get things to work, they just do... straight out of the box.
Spilled the Beans
Hi daibak. I believe this is what you are referring to:
http://ubuntuforums.org/showthread.p...83#post9716483
A virtual OS is one of many possible solutions because it avoids the problem of dealing with a Linux driver entirely. However, this thread has been focused on getting the RT2870 chipset to function properly on a physical machine, sans Windows or any other OS to hold Ubuntu's hand. Lucid should be versatile enough to run on its own, and we're trying to get it there
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