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Mark Sansome | 11 Aug 2007 19:48
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Problem with 2.6.22 kernel

Hello all,

I have been running the at76c503a driver quite successfully for a number
of years now (the latest being v.0.14dev on a  2.6.20 kernel) on Fedora
Core x (currently FC6).

Today a kernel update became available in the Fedora repository so I
upgraded. I now have the following : (uname -a)

2.6.22.1-32.fc6 #1 SMP Wed Aug 1 15:15:33 EDT 2007 i686 i686 i386
GNU/Linux

My current (0.14dev) at76 driver failed to build (I can post error
messages if required) but I was not concerned as I had seen the
announcement about 0.16 and thought it about time for an update anyway.

I downloaded 0.16 from cvs and it compiled without error. On rebooting
however wlan0 failed to load. I am unable to bring the interface up with
ifconfig wlan0 up or with iwlist wlan0 scan. There are no errors (as far
as I can tell) reported in dmesg. lsmod shows that at76_usb is loaded.

I have had to drop back to kernel v.2.6.20 (which is a pain because Yum
automatically upgraded my nvidia drivers to match the 2.6.22 kernel so
at the moment I don't have an X session!).

My question (1) :
Does anyone else have at76_usb working with a 2.6.22 kernel? (and
ideally anyone on FC6?)

My question (2) :
(Continue reading)

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Pavel Roskin | 31 Aug 2007 17:40
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Re: Problem with 2.6.22 kernel

Hello Mark,

On Sat, 2007-08-11 at 18:48 +0100, Mark Sansome wrote:
> Hello all,
> 
> I have been running the at76c503a driver quite successfully for a number
> of years now (the latest being v.0.14dev on a  2.6.20 kernel) on Fedora
> Core x (currently FC6).
> 
> Today a kernel update became available in the Fedora repository so I
> upgraded. I now have the following : (uname -a)
> 
> 2.6.22.1-32.fc6 #1 SMP Wed Aug 1 15:15:33 EDT 2007 i686 i686 i386
> GNU/Linux
> 
> My current (0.14dev) at76 driver failed to build (I can post error
> messages if required) but I was not concerned as I had seen the
> announcement about 0.16 and thought it about time for an update anyway.

It's expected that the old drivers won't build, as the kernel API keeps
changing.

> I downloaded 0.16 from cvs and it compiled without error. On rebooting
> however wlan0 failed to load.

That's unclear.  Does it mean that wlan0 doesn't exist?

> I am unable to bring the interface up with
> ifconfig wlan0 up or with iwlist wlan0 scan.
(Continue reading)

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Mark Sansome | 5 Sep 2007 21:18
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Re: Problem with 2.6.22 kernel

Firstly, apologies for taking so long to get back to you on this. I was
on holiday at the time you wrote and on my return discovered an
(unrelated) network problem which I wanted to eliminate before I dealt
with this:

On Fri, 2007-08-31 at 11:40 -0400, Pavel Roskin wrote:
> On Sat, 2007-08-11 at 18:48 +0100, Mark Sansome wrote:
> > 
> > I have been running the at76c503a driver quite successfully for a number
> > of years now (the latest being v.0.14dev on a  2.6.20 kernel) on Fedora
> > Core x (currently FC6).
> > 
> > Today a kernel update became available in the Fedora repository so I
> > upgraded. I now have the following : (uname -a)
> > 
> > 2.6.22.1-32.fc6 #1 SMP Wed Aug 1 15:15:33 EDT 2007 i686 i686 i386
> > GNU/Linux
> > 
> > I downloaded 0.16 from cvs and it compiled without error. On rebooting
> > however wlan0 failed to load.
> 
> That's unclear.  Does it mean that wlan0 doesn't exist?
> 
Yes sorry, there are "device not found" messages on boot, but strangely
nothing similar in dmesg.

> > I am unable to bring the interface up with
> > ifconfig wlan0 up or with iwlist wlan0 scan.
> 
> Again, it's unclear.  Are there any error messages from ifconfig, or the
(Continue reading)

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