Seth,

It's not completely clear to me whether this kernel helps or not, but I
think it does.  Certainly it is no worse than the last kernel I tested.

* It is my general sense that I am experiencing fewer slowdowns, but
they are certainly still occurring.

 * I have had zero complete failures of the driver requiring a
removal/reinstall, but those do not happen reliably so I cannot say
whether it is due to the new driver or whether I have simply been lucky.

 * With the previous kernel I had numerous 5-seconds-on/5-seconds-off
usability problems where the driver was bouncing between a usable rate
and an unusable rate very consistently until the machine was moved or
the driver reloaded; I have not experienced that at all with this
kernel, but again, it is an intermittent issue so that is not
conclusive.

I can take some wireless debug logs if you like, but without major
noticeable events to correlate them to, I am not sure how helpful they
will be.  There's still a fair amount of noise in the syslog about
various states changing and things going on, but often they do not
correspond to any perceivable behaviors.

Ethan

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https://bugs.launchpad.net/bugs/1315221

Title:
  8086:08b1 (rev 6b) [Dell XPS 13 9333] iwlwifi regularly loses
  connection/becomes unusable on Intel 7260

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