wpa_supplicant 2.4/2.5 issue with some Intel chipsets

Evangelos Foutras evangelos at foutrelis.com
Thu Dec 24 11:05:42 PST 2015

On 24/12/15 20:49, Jouni Malinen wrote:
> On Fri, Dec 18, 2015 at 04:07:58PM +0200, Evangelos Foutras wrote:
>> While I am not personally experiencing any issues with wpa_supplicant
>> 2.5 (not using an Intel wifi card though), we have had several people
>> reporting connection issues downstream in Arch Linux.
>> It appears to be related to the creation and/or usage of P2P management
>> interfaces on some Intel chipsets. (Pardon any wrong terminology, I am
>> not familiar with the wireless stack.)
>> A common error message appears to be:
>>   Could not read interface p2p-dev-wlp2s0 flags: No such device
>> As seen in this report: https://bugs.archlinux.org/task/47428
> Is there any detailed debug log for this type of issue? The -B on the
> command line hides most of debug and for number of the details, more
> verbosity would be needed. In other words "-B" should be replaced with
> "-d" to get some useful messages..
> I tried to find something useful from the ArchLinux bug reports, but
> they seemed to be just providing minimal information from wpa_supplicant
> and point to other bugs that more or less all had been closed as
> duplicates of eachother.. There was no wpa_supplicant debug log that I
> could find or any clear indication that this would be a wpa_supplicant
> issue rather than something with netctl (or whatever configures and
> launches wpa_supplicant here).

Thanks for the follow up and sorry I have not been able to provide any
useful debugging information with my opening post, I reopened one of our
downstream reports which appears to use wpa_supplicant directly and
asked for some kind of debug log; will update you if I get anything. [1]

[1] https://bugs.archlinux.org/task/47428

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