From: "Mihai Donțu" <mihai.dontu@gmail.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: "Rafał Miłecki" <zajec5@gmail.com>,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
linux-wireless@vger.kernel.org
Subject: Re: [b43] usb device disconnects automatically after 1s
Date: Sat, 19 Mar 2011 00:48:27 +0200 [thread overview]
Message-ID: <201103190048.27759.mihai.dontu@gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1103162235400.2388-100000@netrider.rowland.org>
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On Thursday 17 March 2011 04:36:54 Alan Stern wrote:
> On Thu, 17 Mar 2011, Mihai Donțu wrote:
> > On Thursday 17 March 2011 00:35:02 Rafał Miłecki wrote:
> > > 2011/3/16 Mihai Donțu <mihai.dontu@gmail.com>:
> > > > Added linux-usb and linux-wireless to CC.
> > > >
> > > > On Thursday 17 March 2011 00:18:31 Mihai Donțu wrote:
> > > >> Hi,
> > > >>
> > > >> I have just upgraded to 2.6.38 and discovered that I can't use my
> > > >> wireless device (BCM4312 802.11a/b/g). I press Fn + F2, the
> > > >> bluetooth led lights and after a second it turns off by itself. In
> > > >> dmesg I'm seeing the following:
> > > >>
> > > >> [ 88.167212] usb 1-2.2: new full speed USB device using ehci_hcd
> > > >> and address 5
> > > >> [ 88.782330] usb 1-2.2: USB disconnect, address 5
> > > >>
> > > >> I switched to 2.6.37 until I'll have some time to bisect this. In
> > > >> the mean time I have attached the output of lspci, interrupts and
> > > >> dmesg.
> > >
> > > I suspect it's WMI related. What is your machine?
> >
> > It's a Dell Latitude D520 but I can't find a link with full specs (in
> > English).
> >
> > > Please check:
> > > https://bugzilla.kernel.org/show_bug.cgi?id=31002
> > > http://comments.gmane.org/gmane.linux.acpi.devel/49577
> > >
> > > I can't help you more, I just noticed such a issue reported on ACPI
> > > ML, you have to dig into this yourself (or someone else may help you).
> >
> > Thanks for the links. I'll see if I can get anywhere from there.
>
> Another thing you can try is to get usbmon traces under both 2.6.37 and
> 2.6.38. Instructions are in the kernel source file
> Documentation/usb/usbmon.txt.
I'm unable to get a usbmon dump on 2.6.37. Strangely, the only USB device
making noise (on 0u) is my mouse's wireless receiver. I had no such problem on
2.6.38 though.
--
Mihai Donțu
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next prev parent reply other threads:[~2011-03-18 22:48 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <201103170018.32061.mihai.dontu@gmail.com>
2011-03-16 22:22 ` [b43] usb device disconnects automatically after 1s Mihai Donțu
2011-03-16 22:35 ` Rafał Miłecki
2011-03-16 23:06 ` Mihai Donțu
2011-03-17 1:11 ` Joey Lee
2011-04-02 15:44 ` Mihai Donțu
2011-03-17 2:36 ` Alan Stern
2011-03-18 22:48 ` Mihai Donțu [this message]
2011-03-19 1:38 ` Alan Stern
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