I am having the same issue in Ubuntu 12.04.1, but only with the faster SD cards?!
My tests are based on these two SDHC cards: Verbatim SDHC 4GB class 4 - no errors Verbatim SDHC 32GB class 10 - I/O errors during normal transfer speeds Interestingly, I can write to the 32GB without errors, if only I do it "slowly", i.e. $ dd if=file.img of=/dev/mmcblk0 bs=1 No errors, but also very slow transfer speed due to block size being only 1 byte. This command will transfer data a lot faster, but produce a lot of I/O errors and eventually stall before completion: $ dd if=file.img of=/dev/mmcblk0 bs=1M Details on the internal SD card reader (lspci): 0d:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 07) If only there was a more generic way of reducing the speed, thus preventing the I/O errors, I could use the reader normally. I will see if I can get to post some more accurate details and log outputs later. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/247819 Title: Ricoh R5C822 SDHC Card reader I/O errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/247819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
