Running Slackware 13.37
Kingston SDHC 8GB, detected sporadically briefly then never again. Tried different USB readers nothing. Works perfectly with windows on all USB readers.
I may have found a solution:
May 18th, 2011, 09:57 AM
Also, this is a SDHC Card, i didnt know there was a difference. Its 8 GIG, SanDisc.
Yes, I thought it might be. I've found that SDHC cards are detected on some readers but not others. I first noticed this with an old card reader integrated with a floppy drive that I'd incorporated into my main desktop machine. In Ubuntu a standard SD card was detected but not an 8GB SDHC, whereas in Windows 7 on the same machine both SD and SDHC cards are detected. I tried other card readers and Ubuntu could detect SDHC in some but not others. I suspect that there is a driver issue with some card reader chipsets.
For example, I have two of those little USB card readers about the size of a large USB pendrive with one SD slot. The one that works with an SDHC card gives this output with lsusb:
Bus 001 Device 003: ID 04cf:8819 Myson Century, Inc. USB 2.0 SD/MMC Reader
The one that works with SD cards only (in Ubuntu) gives this:
Bus 002 Device 004: ID 05e3:0710 Genesys Logic, Inc. USB 2.0 33-in-1 Card ReaderWhich is interesting because I also have a USB optical drive enclosure with a Genesys chipset which is problematic in some versions of Ubuntu, but that's another story.
I don't know of any solution if your particular card reader won't read SDHC cards - it's probably a faulty driver. The only solution I know is to get one of the small USB card readers and use that. They're not expensive but it would be a gamble. If you were unlucky you might end up with one which won't read SDHC cards either.
It's not much consolation, but your laptop card reader will probably detect and read a standard SD card in Ubuntu. SD cards are 4GB or less, although some 4GB cards are SDHC.
January 11th, 2012, 02:28 PM
Sorry ... but I have the same problem with my PC -- refuses to recognize the internal card reader in Linux (works FINE in Win7!)
These card readers all seem to need special drivers -- which Linux has a real hard time providing.
I "solved" my problem by buying a cheap USB-plugin card reader. Works every time. Bit clumsy, but it works.
This is from:
Therefore I perhaps need to try more USB adaptors, I have found kingston to be a good brand & would love to stick with it. This is hampering me quite a bit, as I'm in the process of upgrading all of my back ups to higher capacity (8GB from 4gb), this will require a bulk purchase to bring the price down, but at the moment I'm afraid to do this if the cards are unusable to me