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Re: [2.6.31-rc1] iwlagn (4965): regression when hardware rf switch is used

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Now that I took a closer look...

> I've tried .31-rc1 on my HP 2510p notebook and noticed a problem when
> using the hardware rf kill switch.


> But with 2.6.31 I get this:
> [disable]
> wlan0: deauthenticating by local choice (reason=3)
> iwlagn 0000:10:00.0: Error sending REPLY_ADD_STA: enqueue_hcmd failed: -5
> mac80211-phy0: failed to remove key (0, 00:14:c1:38:e5:15) from hardware (-5)
> iwlagn 0000:10:00.0: Error sending REPLY_ADD_STA: enqueue_hcmd failed: -5
> mac80211-phy0: failed to remove key (1, ff:ff:ff:ff:ff:ff) from hardware (-5)
> usb 3-1: USB disconnect, address 2

These errors are a driver problem.

> [enable]
> usb 3-1: new full speed USB device using uhci_hcd and address 3
> usb 3-1: configuration #1 chosen from 1 choice

That is completely unrelated. You plugged in a USB device too :)

> A lot uglier with those errors. And after that I have to run ifdown/ifup
> before networking is up again (ifup only does not work as it will complain
> "interface already configured"):

And that's actually expected, and/or a bug in the debian networking
scripts.
(You can trigger the same problem by doing
ifup wlan0
ip link set wlan0 down
ifup wlan0 -> error)

To get your network connection back automatically we will require
changes to userland tools to listen to rfkill events.

> BTW, would it make sense to bring back the first two lines shown with .30
> (or at least the first one):
>    iwlagn 0000:10:00.0: Radio Frequency Kill Switch is On:
>    Kill switch must be turned off for wireless networking to work.
> IMHO it's good to register the reason for the disconnect.

I guess something like that could be added to cfg80211:
phy0: taking interfaces down due to rfkill

johannes

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