Comment 1 for bug 123549

I can confirm that there are problems with (certain?) SD cards on feisty. This is using the computers built-in card reader (7-in-one, attached on internal usb 1.x interface)

I have a 2gb sd card which *is* automounted and size shows up as 2gb in nautilus, but if I try to format it using mkfs.vfat, or use fdisk to look at it - it is only 1 gb according to the kernel. I also get lots of errors from dmesg about accessing past the device's boundaries.

Wikipedia (http://en.wikipedia.org/wiki/Sd_memory_card#Compatibility_issues_with_2GB_and_larger_cards) indicates that there are known problems with large (>2gb) sd cards and windows xp also has problems with it (driver update fixes it for xp though).

As a workaround, I currently put the card in my camera or mp3-player and mount it through the device's usb-storage interface.

I can provide further information upon request - just let me know what kind of information you need.