Unable to disable WiFi with 3.19-rc1 - iwlwifi 7260

Unable to disable WiFi with 3.19-rc1 - iwlwifi 7260

[Gabriele Mazzotta]

Hi,

since v3.19-rc1 I have problems with WiFi (Intel Corporation Dual Band
Wireless-AC 7260) on my laptop. Trying to disable all the radio devices
(WiFi and BT) with the function key of my laptop, which should hard
block the rfkills, causes the following message to be repeated over and
over until I re-enable them again with the function key:

[  593.746001] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[  593.746468] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[  593.746781] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
[  593.747091] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.

Sometimes my laptop hangs when I try to toggle the state of the radio
devices and have to forcefully reboot it.

Reverting 522713c81e ("iwlwifi: pcie: properly reset the device") seems
to fix the problem. I haven't tried anything else since this was the
first thing I tried.

Does anyone know what's the problem with that specific commit?
I will gladly provide any additional information, just tell me what
is needed.

Regards,
Gabriele

Re: Unable to disable WiFi with 3.19-rc1 - iwlwifi 7260

[Sedat Dilek]

On Sat, Dec 27, 2014 at 8:08 PM, Gabriele Mazzotta
<gabriele.mzt@gmail.com> wrote:
> Hi,
>
> since v3.19-rc1 I have problems with WiFi (Intel Corporation Dual Band
> Wireless-AC 7260) on my laptop. Trying to disable all the radio devices
> (WiFi and BT) with the function key of my laptop, which should hard
> block the rfkills, causes the following message to be repeated over and
> over until I re-enable them again with the function key:
>
> [  593.746001] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> [  593.746468] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> [  593.746781] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> [  593.747091] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
>
> Sometimes my laptop hangs when I try to toggle the state of the radio
> devices and have to forcefully reboot it.
>
> Reverting 522713c81e ("iwlwifi: pcie: properly reset the device") seems
> to fix the problem. I haven't tried anything else since this was the
> first thing I tried.
>
> Does anyone know what's the problem with that specific commit?
> I will gladly provide any additional information, just tell me what
> is needed.
>

I cannot say much to the "internals" of your problem

Just two things...

There is a new firmware for 7260 around see [0].

2nd try to pull in the new wireless-drivers.git tree, the changelog
mentions a race with rfkill on iwlwifi [1].

Have fun!

- Sedat -

[0] http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/commit/?id=a876c69f042cf4732755b325d3b709125bb51a06
[1] http://git.kernel.org/cgit/linux/kernel/git/kvalo/wireless-drivers.git/tag/?id=wireless-drivers-for-davem-2014-12-26

Re: Unable to disable WiFi with 3.19-rc1 - iwlwifi 7260

[Grumbach, Emmanuel]

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Re: Unable to disable WiFi with 3.19-rc1 - iwlwifi 7260

[Gabriele Mazzotta]

On Saturday 27 December 2014 19:47:59 Grumbach, Emmanuel wrote:
> Hi,
> 
> On Sat, 2014-12-27 at 20:17 +0100, Sedat Dilek wrote:
> > On Sat, Dec 27, 2014 at 8:08 PM, Gabriele Mazzotta
> > <gabriele.mzt@gmail.com> wrote:
> > > Hi,
> > >
> > > since v3.19-rc1 I have problems with WiFi (Intel Corporation Dual Band
> > > Wireless-AC 7260) on my laptop. Trying to disable all the radio devices
> > > (WiFi and BT) with the function key of my laptop, which should hard
> > > block the rfkills, causes the following message to be repeated over and
> > > over until I re-enable them again with the function key:
> > >
> > > [  593.746001] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> > > [  593.746468] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> > > [  593.746781] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> > > [  593.747091] iwlwifi 0000:02:00.0: RF_KILL bit toggled to disable radio.
> > >
> > > Sometimes my laptop hangs when I try to toggle the state of the radio
> > > devices and have to forcefully reboot it.
> > >
> > > Reverting 522713c81e ("iwlwifi: pcie: properly reset the device") seems
> > > to fix the problem. I haven't tried anything else since this was the
> > > first thing I tried.
> > >
> > > Does anyone know what's the problem with that specific commit?
> > > I will gladly provide any additional information, just tell me what
> > > is needed.
> > >
> > 
> > I cannot say much to the "internals" of your problem
> 
> Thanks for jumping in :)
> 
> > 
> > Just two things...
> > 
> > There is a new firmware for 7260 around see [0].
> > 
> 
> This won't help.
> 
> > 2nd try to pull in the new wireless-drivers.git tree, the changelog
> > mentions a race with rfkill on iwlwifi [1].
> > 
> 
> This will help :) Precisely commit:
> https://git.kernel.org/cgit/linux/kernel/git/iwlwifi/iwlwifi-fixes.git/commit/?id=03d6c3b0fa4f5f0379cede079ec828a6c999fe43

Somehow I missed it, the commit is even mentioned there.
I should have tried to pull the new changes first. I confirm that
everything works with wireless-drivers-for-davem-2014-12-26.

Thank you both for the quick replies.

> > Have fun!
> > 
> > - Sedat -
> > 
> > [0] http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/commit/?id=a876c69f042cf4732755b325d3b709125bb51a06
> > [1] http://git.kernel.org/cgit/linux/kernel/git/kvalo/wireless-drivers.git/tag/?id=wireless-drivers-for-davem-2014-12-26
> 
>