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News in Problems with USB wireless adapter in Linux + Firefox

The purpose of this post is to tell a simple solution that can be useful for solve problems with some USB wireless adapters on Linux. In my case, I use a Netgear MA111 adapter (v1) , based on the chipset prism2. This device, although it has more than five years old, to withstand speeds of only 11Mbps (802.11b) and being a USB1.1 device, it is perfectly functional and perfectly fulfills its mission.

I use the adapter on a computer with a distribution

64-bit Ubuntu 8.10
. Thanks to the enormous effort of the developers and the large number of supported hardware, the adapter works without any kind of configuration, both starting with a live-usb and with the newly installed distribution. The only requirement is to enter the network key, and function.
The problem appears after a few minutes browsing: The connection is broken and can not recreate it. After several attempts (disable and enable the network again, remove and replace the adapter, download and upload - rmmod / insmod / modprobe -) modules that control the device, there is no choice but to restart the computer to regain network.
The problem is repeated in each session. Traffic of a few MB is sufficient for locking the network device. In seeking more information, I find that at the time that network traffic is interrupted, the system log (dmesg
) are dozens of messages like this:

hfa384x_usbctlx_complete_sync: CTLX [3] error: state (Request failed)

After searching a bit the string with the error message in question, find that the error is more or less common and occurs with many models of USB wireless adapters. In particular, I find some

launchpad entry reporting the error. Continuing the search, there is also a proposal

solution.

 
 I decide to try it: 
 Marked as blacklist the module 

prism2_pci

prism2_pci blacklist sudo echo>> / etc / modprobe.d / blacklist

After restarting the computer, I begin to navigate, with multiple tabs, listening to online radio simultaneously with Rhythmbox. I am dedicated to see also Chapter 1

Red Eagle, and so far everything works perfectly.

$ ifconfig wlan0 error.

 
 Conclusion: Highly recommended for all who try have a problem with wireless network cards in Linux