Re: Solution to my issue

December 17, 2013 at 7:12 pm #25824

Member

So the kernel drivers seem awful, and there is a Realtek-supplied driver that works a lot better (at least for me). Latest version seems to be available from https://github.com/pvaret/rtl8192cu-fixes/blob/master/README.md

Setup is well documented elsewhere, but there were some minor variations to make it work on the OSBo image:

Install DKMS support for compiled kernel modules

# build-essential is already on OSBo image

apt-get install dkms

Download precompiled BB headers for OSBo kernel version

wget http://rcn-ee.net/deb/wheezy-armhf/v3.8.13-bone28/linux-headers-3.8.13-bone28_1.0wheezy_armhf.deb

dpkg --install linux-headers-3.8.13-bone28_1.0wheezy_armhf.deb

Download and install patched driver



git clone https://github.com/pvaret/rtl8192cu-fixes.git

dkms add ./rtl8192cu-fixes

dkms install install 8192cu/1.8

# Watch your build fail due to missing timex.h dependency

Edit /usr/src/linux-headers-3.8.13-bone28/arch/arm/include/asm/timex.h on line 18 to change
```
#include 
```
to
```
#include 
```
This looks pointless, but allows the build to complete (run dkms install again)

Blacklist the native kernel module so the newly compiled module will be used instead
```
cp ./rtl8192cu-fixes/blacklist-native-rtl8192.conf /etc/modprobe.d/
```

I’ve also disabled radio power saving as leaving it enabled fills the dmesg log with status messages and causes occasional disconnects from AP. Put the following in a new /etc/modprobe.d/8192cu.conf file
```
options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
```

Obviously these instructions and links/URLs will not age well– they work nicely as of 17 December 2013.

Now ping is not losing packets:

521 packets transmitted, 521 packets received, 0.0% packet loss

round-trip min/avg/max/stddev = 2.450/6.857/19.328/1.572 ms