From: Thomas Fjellstrom <thomas@fjellstrom.ca>
To: Peter Wu <peter@lekensteyn.nl>
Cc: linux-wireless@vger.kernel.org
Subject: Re: Linux iwlwifi 801.11n speeds
Date: Tue, 01 Jul 2014 20:51:08 -0600 [thread overview]
Message-ID: <1670596.rIHpxMZ2dp@balsa> (raw)
In-Reply-To: <2751617.yrMEdml3a5@al>
On Tue 01 Jul 2014 10:23:43 AM Peter Wu wrote:
> # Enable AMPDU (otherwise there is a performance regression from 80
> # Mbit/s to 20 Mbit/s). Introduced with v3.13-10103-g205e221 ("iwlwifi:
> # disable TX AMPDU by default for iwldvm").
Ah, that did it. Thank you! I didn't see that option (8) in my search. Lots of
people disabling 802.11n completely, but that's kind of the opposite of what I
want :)
Do you, or anyone else here know what the actual issue is with some cards that
caused this change to be made? I saw one reference to a device reset happening
occasionally. I can say I have not seen such crashes or resets. If I do, I'll
report asap. Maybe it's related to various other settings hitting some odd
corner case in the wifi firmware.
Question is, why is it enabled in windows if it causes so many problems that
linux has to disable it by default? Do the windows drivers include fixed
firmware? Or maybe a more complex quirks list? It'd be interesting to see what
the two drivers do differently.
--
Thomas Fjellstrom
thomas@fjellstrom.ca
prev parent reply other threads:[~2014-07-02 2:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-30 21:43 Linux iwlwifi 801.11n speeds Thomas Fjellstrom
2014-07-01 8:23 ` Peter Wu
2014-07-02 2:51 ` Thomas Fjellstrom [this message]
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