How to install Toshiba Satellite L40 B14 Wireless Adapter ( ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B) on Ubuntu and Debian Linux

Transcription

1 How to install Toshiba Satellite L40 B14 Wireless Adapter ( ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B) on Ubuntu and Debian Linux Author : admin How to install Toshiba L40 B14 Wireless Adapter ( ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B) on Ubuntu and Debian Linux I've been struggling for more than 10 hours to fix up issues on a Ubuntu Maverick-Meerkaat with a rtl8187b Wireless Adapter The RTL8187B almost drove me mad. I could see the wlan0 which meant the kernel is detecting the device, I could even bring it up with ifconfig wlan0 up, however when I tried it in gnome's networkmanager or wicd the wireless networks were not showing up. Trying to scan for networks using the commands: ubuntu:~# iwlist wlan0 scan 1 / 5

2 was also unsuccesful, trying to bring up and down the wireless wlan0 interface with: ubuntu:~# iwconfig wlan0 up or ubuntu:~# iwconfig wlan0 down Both returned the error: iwconfig: unknown command "up" and iwconfig: unknown command "down" Running simply iwconfig was properly returning information about my Wireless Interface wlan0 : wlan0 IEEE bg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dbm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off The exact information I could get about the wireless device was via the command: ubuntu:~# lsusb grep realtek Bus 001 Device 002: ID 0bda:8197 Realtek Semiconductor Corp. RTL8187B Wireless Adapter Trying manually to scan for wireless networks from console or gnome-terminal with command returned also the below weird results: ubuntu:~# iwconfig wlan0 scan iwconfig: unknown command "scan" More oddly tunning wlan0 interface with commands like: ubuntu:~# iwconfig wlan0 mode managed ubuntu:~# iwconfig wlan0 essid ESSID ubuntu:~# iwconfig wlan0 rate 11M were succesful... I read a bunch of documentation online concerning the wireless card troubles on Ubuntu, Gentoo, Debian etc. Just few of all the resources I've read and tried are: (Returning empty page already a lot resource) (A fork of rtl-wifi.sourceforge.net which is still available though it was not usable) 2 / 5

3 Some of the other resources which most of the people recommended as a way to properly install the RTL8187B wireless driver on linux was located on the website: (Trying to access this page returned a 404 error e.g. this page is no-longer usable) I found even a webpage in Ubuntu Help which claimed to explain how to properly install and configure the RTL8187B wireless driver on which is below: Even the Ubuntu help instructions were pointing me to the broken cuervo's website URL Anyways I was able to find the rtl8187b-modified-dist.tar.gz online and made a mirror of rtl8187bmodified-dist.tar.gz which you can download here Another rtl8187b driver I found was on a toshiba website made especailly for the wireless linux drivers: The questionable file which was claimed to properly be able to make the Realtek Semiconductor Corp. RTL8187B Wireless Adapter to work out was called rl8187b-modified-804.tar.gz. I've made a mirror of rtl8187b-modified-804.tar.gz is here None of the driver archives rtl8187b-modified-dist.tar.gz and rl8187b-modified-804.tar.gz that was supposed to make the Toshiba L40 realtek wireless to work out, after compiling and installing the drivers from source worked out... Both archives produced plenty of error messages and it seems on newer kernels like the one on this notebook: Linux zlatina generic #50-Ubuntu SMP Fri Mar 18 19:00:26 UTC 2011 i686 GNU/Linux, they're no longer usable. The compile errors I got when I tried compiling the rtl8187b driver provided by the archive rtl8187bmodified-dist were: root@ubuntu:/home/zlatina/rtl8187b-modified# sh makedrv rm -fr *.mod.c *.mod *.o.*.cmd *.mod.* *.ko *.o *~ make -C /lib/modules/ generic/build M=/home/zlatina/rtl8187b-modified/ieee80211 CC=gcc modules make[1]: Entering directory `/usr/src/linux-headers generic' scripts/makefile.build:49: *** CFLAGS was changed in "/home/zlatina/rtl8187bmodified/ieee80211/makefile". Fix it to use EXTRA_CFLAGS. Stop. make[1]: *** [_module_/home/zlatina/rtl8187b-modified/ieee80211] Error 2 3 / 5

4 rm -fr *.mod.c *.mod *.o.*.cmd *.ko *~ make -C /lib/modules/ generic/build M=/home/zlatina/rtl8187b-modified/rtl8187 CC=gcc modules make[1]: Entering directory `/usr/src/linux-headers generic' scripts/makefile.build:49: *** CFLAGS was changed in "/home/zlatina/rtl8187bmodified/rtl8187/makefile". Fix it to use EXTRA_CFLAGS. Stop. make[1]: *** [_module_/home/zlatina/rtl8187b-modified/rtl8187] Error 2 root@ubuntu:/home/zlatina/rtl8187b-modified# Another driver I tried which was found on aircrack-ng.org's website was rtl8187_linux_ zip Here are the error messages I experienced while I tried to compile the realtek wireless driver from the archive rtl8187_linux_ compilation terminated. make[2]: *** [/home/zlatina/rtl8187_linux_ /beta-8187/r8187_core.o] Error 1 make[1]: *** [_module_/home/zlatina/rtl8187_linux_ /beta-8187] Error 2 I tried a number of fix ups hoping to solve the compile error messages, but my efforts were useless, as it seems many things has changed in newer Ubuntu versions and they could no longer be compiled. As I realized I couldn't make the native drivers provided by the above sources compile, I decided to give a try to the Windows drivers for Realtek 8187B with ndiswrapper, a link for download of Realtek 8187B (RTL8187B_XP_ _Win7_ _UI_ is found here I untarred the RTL8187B_XP driver and used ndiswrapper to load driver like so: root@ubuntu:~# tar -zxvf RTL8187B_XP_ _Win7_...L.tar.gz root@ubuntu:/home/zlatina/rtl8187b# root@ubuntu:/home/zlatina/rtl8187b# cd Driver/WinXP root@ubuntu:/home/zlatina/rtl8187b/driver/winxp# ndiswrapper -i net8187b.inf In order to test the RTL8178B Windows driver I used: root@ubuntu:~# ndiswrapper -l net8187b : driver installed device (0BDA:8197) present (alternate driver: rtl8187) 4 / 5

5 Powered by TCPDF ( To finally load the Windows XP RTL8187B driver on the Ubuntu I used again ndiswrapper: root@ubuntu:~# ndiswrapper -m Further on I used the ndisgtk graphical ndiswrapper interface to once again test if the Windows driver is working on the Ubuntu and it seemed like it is working, however still my wicd was unable to find any wireless network... There were many online documentation which claimed that the driver for rtl8187b works out of the box on newer kernel releases (kernel versions > ) Finally I found out there is a driver which is a default one with the Ubuntu e.g. rtl8187.ko, I proceeded and loaded the module: root@ubuntu:~# modprobe rtl8187 I also decided to check out if the hardware switch button of the Toshiba Satellite L40 notebook is not switched off and guess what?! The Wireless ON/OFF button was switched OFF!!! OMG... I switched on the button and wicd immediately started showing up the wireless networks... To make the rtl8187 module load on Ubuntu boot up, I had to issue the command: root@ubuntu:~# echo 'rtl8187' >> /etc/modules Voila after all this struggle the wireless card is working now, it's sad I had to loose about 10 hours of time until I come with the simple solution of using the default provided ubuntu driver rtl8187, what is strange is how comes that it does not load up automatically. Thanks God it works now. 5 / 5