My X220 has the same problem on specified SD card. Comment #13 works for me.
I updated to kernel:
Linux natty64 2.6.38-12-generic #51-Ubuntu SMP Wed Sep 28 14:27:32 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
However problem still exists.
I took a look at the source of 2.6.38-12.51, the fix seems not in the source sdhci-pci.c
My X220 has the same problem on specified SD card. Comment #13 works for me.
I updated to kernel:
Linux natty64 2.6.38-12-generic #51-Ubuntu SMP Wed Sep 28 14:27:32 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
However problem still exists.
I took a look at the source of 2.6.38-12.51, the fix seems not in the source sdhci-pci.c
My system detail can be found at: /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/886109
https:/