On Sat, 08 Jan 2005 04:45:58 -0800, Jamie Zawinski <jwz(a)jwz.org> wrote:
Are any of you running FC3 and able to get pictures off of a
CompactFlash card at USB-2 speeds? If so, what CF reader are
you using? Because I want to go out and buy one of those.
The set of readers I have tried recently are:
- SanDisk ImageMate SDDR-31 USB 1.0 reader;
I use SDDR-31 successfuly since 2001, it's a great device with [almost]
no serious firmware problems which plague this kind of peripherals.
All of them do this when I plug them in (card present or not):
usb 5-1: new full speed USB device using address 52
usb 5-1: device not accepting address 52, error -71
usb 5-1: new full speed USB device using address 53
usb 5-1: device not accepting address 53, error -71
This is not good, because -71 is a low-level protocol error. Usually it
is called by things like a bitstuffing violation, a missing token, etc.
I cannot speculate what causes it, but every component has to be excluded
by replacement. We can exclude readers now, so it leaves motherboard
chips and traces, cables, possibly a hub, and most especially any power
supplies involved. Sometimes it happens when people connect external VGA
to a laptop, go figure! (I am not saying this is your problem, obviously).
I know who I am dealing with, Jamie, but for the list archives: DO NOT
exclude two articles at a time. If you replace the laptop, leave all cabling,
hubs, and the reader, in place.
To be frank, it is possible for the software to report -71 for a bad
reason, when it is confused. Once we excluded everything else, with
the computer itself, it's time to look at UHCI root hub handling.
We'll take it from there.
"Eratically" means that generally they would work
I rebooted the machine, and I could plug/unplug them right after
that, and they'd continue working; but if I tried to use them again
a few hours later, the only way to make them work would be to reboot
again. No amount of rmmod would bring joy (though some would bring
This is very interesting, but I don't think I can act upon this section
of your report, especially that it appears to relate a past experience.
Let's concentrate on -71s.
BTW, I should note that it is possible to use a passive PCMCIA-CF adapter.
I have one of those as well, and it works great. The only reason I used
SDDR-31 is that my only PC Card slot was often used by a wireless card.
Eventually I got used to it. Also, in older distros and kernels it was
required to stop and start pcmcia services when you plug the thing, and
USB always was 100% hotplug, at least in theory.