linux-kernel - Re: [BUG] usb problems in .38-rc3+

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Message-ID: <20110216184727.GG14085@joana>
Date:	Wed, 16 Feb 2011 15:47:27 -0300
From:	"Gustavo F. Padovan" <padovan@...fusion.mobi>
To:	Ed Tomlinson <edt@....ca>
Cc:	linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [BUG] usb problems in .38-rc3+

Hi Ed,

* Ed Tomlinson <edt@....ca> [2011-02-16 13:38:00 -0500]:

> On Wednesday 16 February 2011 09:00:53 Gustavo F. Padovan wrote:
> > Hi Ed,
> > 
> > * Ed Tomlinson <edt@....ca> [2011-02-05 14:17:57 -0500]:
> > 
> > > Hi,
> > > 
> > > My bluetooth usb dongle has stopped working in .38-rc3+
> > > 
> > > Bus 002 Device 008: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
> > > 
> > > and in dmesg
> > > 
> > > [108495.369056] usb 5-1: new full speed USB device using ohci_hcd and address 3
> > > [108495.573077] usb 5-1: New USB device found, idVendor=0a12, idProduct=0001
> > > [108495.580099] usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> > > [108652.971977] usb 5-1: USB disconnect, address 3
> > > [108652.972718] btusb_bulk_complete: hci0 urb ffff8800684e99c0 failed to resubmit (19)
> > > [108652.973725] btusb_bulk_complete: hci0 urb ffff8800684e9c00 failed to resubmit (19)
> > > [108652.974707] btusb_intr_complete: hci0 urb ffff8800684e9840 failed to resubmit (19)
> > > [108653.001690] btusb_send_frame: hci0 urb ffff8800bb42a240 submission failed
> > > [108657.007541] usb 2-4.7: new full speed USB device using ehci_hcd and address 8
> > > [108657.147736] usb 2-4.7: New USB device found, idVendor=0a12, idProduct=0001
> > > [108657.154954] usb 2-4.7: New USB device strings: Mfr=0, Product=0, SerialNumber=0
> > > 
> > > Its been working for years here.
> > > 
> > > Any ideas on what to try or additional info to gather?
> > 
> > What's the symptom? what do you mean by stopped to work?
> 
> With .37 kernel my bluetooth apple magicmouse is detected at boot and works as expected & when 
> kde 4.6 is active bluedevil sees my bluetooth adaptor.  With .38-rc my bluetooth mouse is not detected
> nor does bluedevil see the bluetooth adaptor.
> 
> > Can you provide me output of "hciconfig -a"?
> This gives nothing when the doogle is not plugged (it runs but prints out nothing).
> 
> > And if possible enable dynamic debug for your kernel, mount the debugfs 
> > and then
> > 
> > echo -n "module btusb +p" > /sys/kernel/debug/dynamic_debug/control
> > echo -n "module bluetooth +p" > /sys/kernel/debug/dynamic_debug/control
> 
> Hey a new debug option to enable!  With it enabled and the system booted with the bluetooth doogle
> unpluged here is what happens when it gets plugged (with 38-rc5):
> 
> grover ed # hciconfig -a
> hci0:   Type: BR/EDR  Bus: USB
>         BD Address: 00:0A:3A:55:07:5A  ACL MTU: 192:8  SCO MTU: 64:8
>         UP RUNNING 
>         RX bytes:356 acl:0 sco:0 events:13 errors:0
>         TX bytes:53 acl:0 sco:0 commands:13 errors:0
>         Features: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
>         Packet type: DM1 DH1 HV1 
>         Link policy: 
>         Link mode: SLAVE ACCEPT 
>         Name: 'grover-0'
>         Class: 0x000000
>         Service Classes: Unspecified
>         Device Class: Miscellaneous, 
>         HCI Version: 1.1 (0x1)  Revision: 0x20d
>         LMP Version: 1.1 (0x1)  Subversion: 0x20d
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> and the device works.  So either enabling dynamic debug, something between rc4 and rc5 or booting with the
> adaptor unplugged makes things work.  Will do some more checking to figure out which.

Great that it is working now. It might be a usb bug that you had, because we
had no changes in the Bluetooth subsystem between rc4 and rc5.

But does booting with the adapter work as well?

-- 
Gustavo F. Padovan
http://profusion.mobi
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