On Mon, 2007-04-30 at 16:12 +0100, alan c wrote:
> I bought a multi card reader (external USB) some time ago for use with 
> CF cards which I was using at the time. I have recently  begun using 
> SD cards and the first ones were 16MB and 1GB SD.
> 
> The 16MB has always been recognised immediately via the card reader 
> and kubuntu (6.06, 6.10, 7.04) but the 1GB cards are only recognised 
> intermittently. In fact I had one replaced at the retail shop. The 
> replacement did not get recognised either(!)
> 
> I now have additional 2GB sd cards and again they are sometimes 
> recognised, but mostly not.
> 
> Same happens in 'doze XP, intermittent and unpredictable. Sigh.
> 
> I sort of conclude that the card reader is old technology and I need a 
> newer one, which hopefully will handle larger SD better. (?)
> 
> It is not a question about mounting the card, it is simply not seen as 
> a card device, although the card reader is shown ok in
> lsusb.
> 
> The cards all work ok in their respective  units - a camera and DAB 
> radios etc, and can be seen and downloaded via usb from their units, 
> but not (usually) from the card reader.
> 
> I would be very interested in comments - SD standards seem to be a bit 
> of a nightmare according to wikipedia.
> -- 
> alan cocks
> Kubuntu user#10391

Are you sure enough power's being supplied to the USB card reader?  My
WD Passport HDD and 2GB pen drive won't get recognised on my laptop with
insufficient power, but my 256MB pen drive will.


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