hp-wmi: wifi rfkill can't be reversed

hp-wmi: wifi rfkill can't be reversed

[Ben Hutchings]

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Alan Wilson (in cc) reported that rfkill doesn't work correctly on the
HP Compaq nc6230.

- Without the hp-wmi driver loaded, the hard rfkill switch controls both
wifi and BT while soft rfkill only works for wifi.

- With the hp-wmi driver loaded, soft and hard rfkill switches can be
used to turn wifi and BT off and to turn BT back on, but wifi cannot be
turned back on without using the BIOS setup program.

(The full bug report is logged at <https://bugs.debian.org/756947>.)

This was reported against Linux 3.2, but I don't think there have been
relevant fixes since then.

Perhaps the hp-wmi driver should blacklist this model for wifi rfkill
(while leaving all the others features enabled).  Does that seem like a
reasonable approach to fix this?

Ben.

-- 
Ben Hutchings
No political challenge can be met by shopping. - George Monbiot

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Re: hp-wmi: wifi rfkill can't be reversed

[Darren Hart]

On 8/26/14, 2:50, "Ben Hutchings" <ben@decadent.org.uk> wrote:

>Alan Wilson (in cc) reported that rfkill doesn't work correctly on the
>HP Compaq nc6230.
>
>- Without the hp-wmi driver loaded, the hard rfkill switch controls both
>wifi and BT while soft rfkill only works for wifi.
>
>- With the hp-wmi driver loaded, soft and hard rfkill switches can be
>used to turn wifi and BT off and to turn BT back on, but wifi cannot be
>turned back on without using the BIOS setup program.
>
>(The full bug report is logged at <https://bugs.debian.org/756947>.)
>
>This was reported against Linux 3.2, but I don't think there have been
>relevant fixes since then.
>
>Perhaps the hp-wmi driver should blacklist this model for wifi rfkill
>(while leaving all the others features enabled).  Does that seem like a
>reasonable approach to fix this?
>
>Ben.

Hi didn't quite have to get pencil and paper out to create a truth table
for this one, but nearly! Assuming assertions about no more firmware
becoming available and the latest firmware being run are accurate,
blacklisting this model seems like a reasonable approach to restoring
basic functionality.

Thanks,

-- 
Darren Hart					Open Source Technology Center
darren.hart@intel.com				            Intel Corporation

Re: hp-wmi: wifi rfkill can't be reversed

[Ben Hutchings]

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On Tue, 2014-08-26 at 17:40 -0500, Darren Hart wrote:
> On 8/26/14, 2:50, "Ben Hutchings" <ben@decadent.org.uk> wrote:
> 
> >Alan Wilson (in cc) reported that rfkill doesn't work correctly on the
> >HP Compaq nc6230.
> >
> >- Without the hp-wmi driver loaded, the hard rfkill switch controls both
> >wifi and BT while soft rfkill only works for wifi.
> >
> >- With the hp-wmi driver loaded, soft and hard rfkill switches can be
> >used to turn wifi and BT off and to turn BT back on, but wifi cannot be
> >turned back on without using the BIOS setup program.
> >
> >(The full bug report is logged at <https://bugs.debian.org/756947>.)
> >
> >This was reported against Linux 3.2, but I don't think there have been
> >relevant fixes since then.
> >
> >Perhaps the hp-wmi driver should blacklist this model for wifi rfkill
> >(while leaving all the others features enabled).  Does that seem like a
> >reasonable approach to fix this?
> >
> >Ben.
> 
> Hi didn't quite have to get pencil and paper out to create a truth table
> for this one, but nearly! Assuming assertions about no more firmware
> becoming available and the latest firmware being run are accurate,
> blacklisting this model seems like a reasonable approach to restoring
> basic functionality.

Alan, can you provide the identifying information for this model:

    grep . /sys/class/dmi/id/{product,board}_{name,version}

Ben.

-- 
Ben Hutchings
No political challenge can be met by shopping. - George Monbiot

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