realtek usb wireless adapter

**gandaran** · January 14th, 2011

Bus 001 Device 007: ID 0bda:8171 Realtek Semiconductor Corp. RTL8188SU 802.11n WLAN Adapter

this adapter shows up in network manager when connected to computer but doesn't detect network and cant connect to any network I have setup in nm, the adapter works fine in windows and it's supposed to work in linux or do I have to install drivers?

**Diehardshorty** · January 14th, 2011

Try this link it helped me get my card recognized and install the drivers also find wifi networks

http://www.ubuntugeek.com/how-to-tro...in-ubuntu.html

**chili555** · January 14th, 2011

This device is supposed to work with the driver r8192s_usb that's already in recent kernels. Often, firmware is needed. Please open Applications > Accessories > Terminal and run and post:

Code:

dmesg | grep 819

Thanks.

**Diehardshorty** · January 14th, 2011

Edit: Double post woops

**gandaran** · January 15th, 2011

Originally Posted by chili555

This device is supposed to work with the driver r8192s_usb that's already in recent kernels. Often, firmware is needed. Please open Applications > Accessories > Terminal and run and post:

Code:

dmesg | grep 819

Thanks.

mfp@MSI:~$ dmesg | grep 819
[ 0.000000] .init : 0xc0819000 - 0xc08c5000 ( 688 kB)
[ 448.557965] r8192s_usb: module is from the staging directory, the quality is unknown, you have been warned.
[ 448.571736] Linux kernel driver for RTL8192 based WLAN cards
[ 448.759937] usbcore: registered new interface driver rtl819xU
[ 448.812956] rtl819xU:FirmwareRequest92S(): failed with TCR-Status: a
[ 448.813198] rtl819xU:FirmwareDownload92S(): failed with TCR-Status: a
[ 448.826327] rtl819xU:FirmwareRequest92S(): failed with TCR-Status: a
[ 448.826575] rtl819xU:FirmwareDownload92S(): failed with TCR-Status: a
[ 448.826582] rtl819xU:ERR!!! _rtl8192_up(): initialization is failed!
[ 448.853296] rtl819xU:FirmwareRequest92S(): failed with TCR-Status: a
[ 448.853627] rtl819xU:FirmwareDownload92S(): failed with TCR-Status: a
[ 448.868137] rtl819xU:FirmwareRequest92S(): failed with TCR-Status: a
[ 448.868471] rtl819xU:FirmwareDownload92S(): failed with TCR-Status: a
[ 448.868478] rtl819xU:ERR!!! _rtl8192_up(): initialization is failed!
mfp@MSI:~$

so looks like firmware is needed?

**chili555** · January 15th, 2011

The driver is looking for the firmware in /lib/firmware/RTL8192SU. You may have the firmware in RTL8192SE. Check with:

Code:

ls /lib/firmware/RTL8192SE

If you find this:

rtl8192sfw492.bin rtl8192sfw74.bin rtl8192sfw.bin

Then you have the needed firmware in another directory. Let's make a new directory and copy over the firmware:

Code:

sudo mkdir /lib/firmware/RTL8192SU
sudp cp /lib/firmware/RTL8192SE/* /lib/firmware/RTL8192SU

Now remove and reload the driver module:

Code:

sudo rmmod -f r8192s_usb
sudo modprobe r8192s_usb

Are things working now?

**gandaran** · January 15th, 2011

Originally Posted by chili555

The driver is looking for the firmware in /lib/firmware/RTL8192SU. You may have the firmware in RTL8192SE. Check with:

Code:

ls /lib/firmware/RTL8192SE

If you find this:Then you have the needed firmware in another directory. Let's make a new directory and copy over the firmware:

Code:

sudo mkdir /lib/firmware/RTL8192SU
sudp cp /lib/firmware/RTL8192SE/* /lib/firmware/RTL8192SU

Now remove and reload the driver module:

Code:

sudo rmmod -f r8192s_usb
sudo modprobe r8192s_usb

Are things working now?

not yet but nearly

the wireless adapter can see networks now and tries to connect, I enter the wpa password and it tries to connect but doesn't and asks again for the password confirmation.
thanks for the help.

**chili555** · January 15th, 2011

Is your network WPA, WPA2 or the dreaded mixed WPA and WPA2 mode? Can you change to WPA2 alone?

EDIT:

d00d! Does this sound like your problem? http://www.mail-archive.com/ubuntu-b...sg2620217.html

Post back if you need guidance getting the proper firmware downloaded and installed. Sorry, I just found this.

**gandaran** · January 16th, 2011

Originally Posted by chili555

Is your network WPA, WPA2 or the dreaded mixed WPA and WPA2 mode? Can you change to WPA2 alone?

EDIT:

d00d! Does this sound like your problem? http://www.mail-archive.com/ubuntu-b...sg2620217.html

Post back if you need guidance getting the proper firmware downloaded and installed. Sorry, I just found this.

thank you for all the help
now it's working very well with the new firmware

wget http://launchpadlibrarian.net/373876...8192sfw.bin.gz
gunzip rtl8192sfw.bin.gz
sudo mv rtl8192sfw.bin /lib/firmware/RTL8192SU/