[Bug 852190] Re: Oneric daily - Edimax EW-7811Un USB dongle won't connect to networks (rtl8192cu module)

[Michael J Daniel]

I've messed around with this a bit and I think, at least, 
the rtl8192cu driver needs to be rewritten to eliminate the BKL (big Kernel 
Lock).

Where is the documentation that explains the BKL and how to replace it
in drivers?

The BKL calls are defined in smp_lock.h.
Is smp_lock.h included in any of the linux-firmware source code?

smp_lock.h is included twice in the manufacturer (realtek)  sources for
the driver.

My work around is to stay with 11.04, 
and building my own version of rtl8192cu from the manufacturer sources.
It works great in my CQU-906.

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Title:
  Oneric daily - Edimax EW-7811Un USB dongle won't connect to networks
  (rtl8192cu module)

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[Bug 880874] [NEW] rtl8192cu no longer connects

[Michael J Daniel]

Public bug reported:

With 11.04 no drivers were loaded the CQU-906 USB wifi dongle was plugged in.
Downloaded, built, and installed drivers from realtek.
They connected with the internet when the dongle was plugged in.

Upgrading to 11.10 resulted in linux-firmware drivers being loaded when dongle 
was plugged in.
linux-firmware version 1.60
But that driver doesn't connect to the internet.

Tried to build and install the realtek drivers, but compile failed
because smp-lock.h file is missing.

Dongle light is on constantly in 11.10. 
It is not on constantly when it was working on 11.04.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-firmware 1.60
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Mon Oct 24 06:45:38 2011
Dependencies:
 
InstallationMedia: Ubuntu 11.10 Oneiric Ocelot - Release i386 (20111012)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-firmware
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-firmware (Ubuntu)
 Importance: Undecided
 Status: New


** Tags: apport-bug i386 oneiric running-unity

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https://bugs.launchpad.net/bugs/880874

Title:
  rtl8192cu no longer connects

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