From: Seth Forshee <seth.forshee@canonical.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Christian Lamparter <chunkeey@googlemail.com>,
linux-usb@vger.kernel.org, "Chen,
Stephen" <scchen@qca.qualcomm.com>,
linux-wireless@vger.kernel.org
Subject: Re: carl9170 A-MPDU transmit problem
Date: Mon, 25 Feb 2013 08:51:42 -0600 [thread overview]
Message-ID: <20130225145142.GC13296@thinkpad-t410> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1302241833580.29714-100000@netrider.rowland.org>
On Sun, Feb 24, 2013 at 06:41:06PM -0500, Alan Stern wrote:
> > Or can you think of any other "interesting"
> > bits that could help to explain why the "Arrandale box [...] worked
> > perfectly" whereas (all his) Ivy Bridge ones have problems.
> > (Of course, I assume that it is always the same device, the
> > same firmware and the same kernel drivers in all tests, right)?
>
> No, not really. Unless one is using USB-2 and the other USB-3 -- the
> device might have a bug in its USB-3 firmware.
This appears to be a high-speed device; at least, dmesg says "new
high-speed USB device ..." when I plug it in. So for the firmware isn't
it USB 2.0 even when plugged in a SuperSpeed port?
> What happens if xhci-hcd is unloaded before the test?
I'll test this, but I need to rebuild first. xhci-hcd is currently
built-in to my kenel.
Seth
next prev parent reply other threads:[~2013-02-25 14:51 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-22 20:50 carl9170 A-MPDU transmit problem Seth Forshee
2013-02-22 22:07 ` Christian Lamparter
2013-02-22 22:54 ` Seth Forshee
2013-02-22 23:48 ` Christian Lamparter
2013-02-23 6:46 ` Seth Forshee
2013-02-23 14:07 ` Christian Lamparter
2013-02-23 21:26 ` Alan Stern
2013-02-24 4:52 ` Seth Forshee
2013-02-24 15:54 ` Alan Stern
2013-02-24 22:30 ` Christian Lamparter
2013-02-24 23:41 ` Alan Stern
2013-02-25 14:51 ` Seth Forshee [this message]
2013-02-25 15:04 ` Christian Lamparter
2013-02-25 15:29 ` Alan Stern
2013-02-25 16:03 ` Christian Lamparter
2013-02-25 19:13 ` Sarah Sharp
2013-02-25 19:46 ` Seth Forshee
2013-02-25 19:52 ` Christian Lamparter
2013-02-25 20:19 ` Alan Stern
2013-02-25 23:30 ` Christian Lamparter
2013-02-26 16:50 ` Seth Forshee
2013-03-07 17:46 ` Seth Forshee
2013-03-07 23:37 ` Sarah Sharp
2013-02-25 22:42 ` Seth Forshee
2013-02-25 20:23 ` Seth Forshee
2013-02-25 14:44 ` Seth Forshee
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