[gentoo-user] Kernel 2.6.26 and iwl3945

[gentoo-user] Kernel 2.6.26 and iwl3945

[Florian Philipp]

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Hi list!

I recently updated from tuxonice-2.6.24-r9 to tuxonice-2.6.26.

I hoped it would solve irregular kernel crashes on my Dell notebook and
would reactivate the wifi LED. However, it caused more problems than it
solved.

- the pvrusb2 (V4L2) kernel module works but causes kernel panics and oops
- the bay (ACPI) module can't be loaded
- suddenly Thunderbird disappears on suspend2disk/resume
- the RFKILL switch is not always recognized (needs interface restart)
- iwlwifi sometimes causes (non-critical) kernel oops when initialized
- the wifi LED still doesn't work

The first three points will need more investigation on my part and might
soon be the topic of other threads. However, I'd like to hear your input
on the other issues:

Is this kernel version generally unstable?
What do I need to make the LED work?
What could I do to solve all these problems? I'm out of ideas at the
moment and Gentoo Bugzilla doesn't offer much on these topics.

I've attached the kernel config and a part of dmesg where iwlwifi caused
an oops after I've restarted the net.eth1 script but then it worked
flawlessly.

Thanks in advance!
Florian Philipp

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Re: [gentoo-user] Kernel 2.6.26 and iwl3945

[Florian Philipp]

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Florian Philipp schrieb:
> Hi list!
> 
> I recently updated from tuxonice-2.6.24-r9 to tuxonice-2.6.26.
> 
> I hoped it would solve irregular kernel crashes on my Dell notebook and
> would reactivate the wifi LED. However, it caused more problems than it
> solved.

[...]

> Is this kernel version generally unstable?
> What do I need to make the LED work?
> What could I do to solve all these problems? I'm out of ideas at the
> moment and Gentoo Bugzilla doesn't offer much on these topics.
> 
> Thanks in advance!
> Florian Philipp

Can anyone say: "Yeah, I use the iwl3945 driver with 2.6.26 and it works
flawlessly for me." If so, could you please post your exact kernel
version (for example gentoo-sources-2.6.26-r2) and your kernel config?


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Re: [gentoo-user] Kernel 2.6.26 and iwl3945

[Alan McKinnon]

On Sunday 16 November 2008 13:02:54 Florian Philipp wrote:
> Can anyone say: "Yeah, I use the iwl3945 driver with 2.6.26 and it works
> flawlessly for me." If so, could you please post your exact kernel
> version (for example gentoo-sources-2.6.26-r2) and your kernel config?

No-one can say that, the driver is buggy. Something to do with waking the card 
up or bringing it out of deep sleep. Personally, I think it's along the lines 
of a race condition in how the card is reliably powered up (but that's just 
be thinking of what's most likely). Intel has a bugzilla, which shows that 
virtually every distro on all platforms using the 3945 have the identical 
problem in every kernel version that contains this code:

http://intellinuxwireless.org/bugzilla/show_bug.cgi?format=multiple&id=1651

We have two options:

- get involved, fix it ourselves, submit patch to upstream (intel)
- wait for intel to come up with reliable code

All the evidence points to intel taking this seriously, it's a popular card 
and intel wants their stuff to work nicely on linux. So chances are it's a 
deeper problem that it appears on the surface

-- 
alan dot mckinnon at gmail dot com

Re: [gentoo-user] Kernel 2.6.26 and iwl3945

[Sebastian Günther]

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* Florian Philipp (lists@f_philipp.fastmail.net) [16.11.08 12:03]:
> 
> Can anyone say: "Yeah, I use the iwl3945 driver with 2.6.26 and it works
> flawlessly for me." If so, could you please post your exact kernel
> version (for example gentoo-sources-2.6.26-r2) and your kernel config?
> 

Well, I use the iwl3945 without any problem:

tuxonice-sources-2.6.26 (config attached.)

But as you see I use tuxonice, and there are no problems with 
sleeping/waking since tuxonice unloads the module.

Sebastian

-- 
 " Religion ist das Opium des Volkes. "      Karl Marx

 SEB@STI@N GÜNTHER         mailto:samson@guenther-roetgen.de

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