gnupic: Re: [gnupic] Follow-up question to the thread about Ben's port of Brad's Lab2 to gpasm
Subject:
Re: [gnupic] Follow-up question to the thread about Ben's port of Brad's Lab2 to gpasm
From:
Nicholas Robinson ####@####.####
Date:
3 Jan 2006 23:04:31 +0000
Message-Id: <200601032306.41856.npr@bottlehall.co.uk>
On Tuesday 03 January 2006 11:23, Xiaofan Chen wrote:
> On 1/3/06, Nicholas Robinson ####@####.#### wrote:
> > lsusb has never shown anything; occasionally I get some dmesg messages
> > but > not every time. I've once had a dmesg report that a high speed
> > device had been connected but usually it's something along the lines of:
> >
> > Jan 2 15:41:30 paulo kernel: usb 2-1: new low speed USB device using
> > uhci_hcd and address 11
> > Jan 2 15:41:30 paulo kernel: usb 2-1: device descriptor read/64, error
> > -71 Jan 2 15:41:30 paulo kernel: usb 2-1: device descriptor read/64,
> > error -71
>
> Please refer to the following thread I post to Linux-USB-User list. I've
> seen similar problem with PICkit 2 when hotplugging.
>
> http://marc.theaimsgroup.com/?t=113369755700001&r=1&w=2
>
> According to Alan Stern (one of the active Linux USB developer), it is
> possible due to lousy cable or firmware bug or an old Linux kernel.
Hi
Thanks for your email. I'm using a cable that works well with other devices so
I think it is okay and I have the most recent fedora core 4 kernel - but I'm
building the latest stable from source as I type to have at go at Wojtek's
suggestion and use the usbmon/debugfs. Strangely, although earlier fedora
core kernels included usbmon, this latest one doesn't, so source it is!
>
> >From Alan
>
> "110 is ETIMEDOUT; see include/asm-generic/errno.h. In
> Documentation/usb/error-codes.txt it says that -ETIMEDOUT indicates
> either the device failed to respond to a request or a timeout expired
> before a transfer was completed."
I seem only to get -71 errors which are tersely reported as Protocol Error by
perror.
Regards
Nick
