SDHC card won't mount on linux
 

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:

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coffeecat
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.
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Mark Phelps
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.
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This is from:
http://ubuntuforums.org/archive/inde...t-1760934.html

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 :(

If there are no working drivers for a non-standard product in windows, everyone correctly blame the manufacturer for not providing drivers. But when the same situation appears using Linux, a lot of people blame Linux..

What's the filesystem? BTW, some things are out there with offensive windows software interfering with the stanard storage solution.

Output of lspci
 

A lot of card readers are based on the Realtek RTS5229 chipset; you can download it here.

Just unpack the file and follow the instructions for compiling the driver for the specific kernel you are running.

Hope this helps.

Yeah, I will try that.
 

When I look in Windows it says vfat16, so I believe it is standard, or do you mean my linux harddrive (think that is Ext2).
Sounds good, I will try that.

I was thinking of buying a multi card reader in the hope it would have some kind of standard USB interface.

I should have explained myself. I got a 4G usb key recently of which 2.5G was a catalogue. There was a small storage area (~ 1Gig) and the rest was their control software. Wanting to recover the 4G and throw it at my son, I ended up on a their website which boasted of pretty full control over the usb key. You could pass it from virus laden pc to another virus laden pc and only the data segment could get polluted. Can't think of the name now but no doubt others will.