Can you please try again with either kernel 3.4.11 from http://kernel.ubuntu.com/~kernel-ppa/mainline/ or with the Ubuntu 12.10 "Quantal Quetzal" beta 2 LiveCD which is based on the upstream 3.5 kernel.
The following patch was committed to the 3.4 kernel: author Paul Walmsley Mon, 12 Mar 2012 10:58:00 +0000 (04:58 -0600) committer Chris Ball Fri, 6 Apr 2012 00:32:34 +0000 (20:32 -0400) commit 3bdc9ba892d6a294d16e9e6e0c4041926aa3d58c tree 2b1ed75a8b3b5a40c01e8f80bc45242a3c2b35f0 parent 8c2fc8e413ecc2c96b696e28d4eb1bc6cee8dc84 mmc: use really long write timeout to deal with crappy cards Several people have noticed that crappy SD cards take much longer to complete multiple block writes than the 300ms that Linux specifies. Try to work around this by using a three second write timeout instead. This is a generalized version of a patch from Chase Maupin <[email protected]>, whose patch description said: * With certain SD cards timeouts like the following have been seen due to an improper calculation of the dto value: mmcblk0: error -110 transferring data, sector 4126233, nr 8, card status 0xc00 * By removing the dto calculation and setting the timeout value to the maximum specified by the SD card specification part A2 section 2.2.15 these timeouts can be avoided. * This change has been used by beagleboard users as well as the Texas Instruments SDK without a negative impact. * There are multiple discussion threads about this but the most relevant ones are: * http://talk.maemo.org/showthread.php?p=1000707#post1000707 * http://www.mail-archive.com/[email protected]/msg42213.html * Original proposal for this fix was done by Sukumar Ghoral of Texas Instruments * Tested using a Texas Instruments AM335x EVM Signed-off-by: Paul Walmsley Tested-by: Tony Lindgren Signed-off-by: Chris Ball ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags removed: kernel-bug-exists-upstream needs-upstream-testing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/956042 Title: end_request: I/O error, dev mmcblk0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/956042/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
