> Or does this happen automatically by merely placing a card into the reader?
In my case, /dev/mmcblk0 is not a removable SD card, it is the internal storage of the machine that comes in the form of a embedded MMC (eMMC). Here is the result of lsblk command: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 1 29.4G 0 disk ├─sda1 8:1 1 1.1G 0 part └─sda2 8:2 1 2.2M 0 part loop0 7:0 0 1G 1 loop /rofs mmcblk0rpmb 179:24 0 4M 0 disk mmcblk0boot0 179:8 0 4M 1 disk mmcblk0boot1 179:16 0 4M 1 disk mmcblk0 179:0 0 116.5G 0 disk ├─mmcblk0p1 179:1 0 260M 0 part ├─mmcblk0p2 179:2 0 128M 0 part ├─mmcblk0p3 179:3 0 28G 0 part /media/ubuntu/4EBA142BBA1411D7 ├─mmcblk0p4 179:4 0 11.2G 0 part ├─mmcblk0p5 179:5 0 68G 0 part └─mmcblk0p6 179:6 0 8G 0 part sda is the vivid live USB mmcblk0 is the eMMC - p1 is the EFI partition - p2 is a partition containing Microsoft stuffs (recovery tools or something else, whatever) - p3 is the partition where Windows 8.1 is installed (I have successfully resized it despite the I/O errors) - p4 is the partition containing images for reinstallation of Windows 8.1 - p5 is the partition where I want to install Ubuntu - p6 is the swap partition I can mount p3 and p5 without any error. The first errors appear during boot. Then, I get the same kind of errors when launching gparted or trying to install ubuntu. When I run GParted > Refresh devices, I get a dialog box titled "Libparted Bug Found!" with the message "Input/output error during read on /dev/mmcblk0" and error below appears in dmesg: [ 392.191741] sdhci: Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock [ 392.194120] mmc0: Got data interrupt 0x00000002 even though no data operation was in progress. [ 392.196461] mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0x400900 [ 392.196480] mmcblk0: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0x0 [ 392.196493] mmcblk0: retrying using single block read [ 392.199701] mmcblk0: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0x0 [ 392.199725] blk_update_request: 1088 callbacks suppressed [ 392.199737] blk_update_request: I/O error, dev mmcblk0, sector 0 [ 392.202048] mmcblk0: error -84 transferring data, sector 1, nr 7, cmd response 0x900, card status 0x0 [ 392.202071] blk_update_request: I/O error, dev mmcblk0, sector 1 [ 392.204640] mmcblk0: error -84 transferring data, sector 2, nr 6, cmd response 0x900, card status 0x0 [ 392.204660] blk_update_request: I/O error, dev mmcblk0, sector 2 [ 392.207004] mmcblk0: error -84 transferring data, sector 3, nr 5, cmd response 0x900, card status 0x0 [ 392.207022] blk_update_request: I/O error, dev mmcblk0, sector 3 [ 392.209275] mmcblk0: error -84 transferring data, sector 4, nr 4, cmd response 0x900, card status 0x0 [ 392.209308] blk_update_request: I/O error, dev mmcblk0, sector 4 [ 392.211919] mmcblk0: error -84 transferring data, sector 5, nr 3, cmd response 0x900, card status 0x0 [ 392.211941] blk_update_request: I/O error, dev mmcblk0, sector 5 [ 392.214220] mmcblk0: error -84 transferring data, sector 6, nr 2, cmd response 0x900, card status 0x0 [ 392.214243] blk_update_request: I/O error, dev mmcblk0, sector 6 [ 392.216589] mmcblk0: error -84 transferring data, sector 7, nr 1, cmd response 0x900, card status 0x0 [ 392.216611] blk_update_request: I/O error, dev mmcblk0, sector 7 [ 392.219490] mmc0: Got data interrupt 0x00000002 even though no data operation was in progress. [ 392.222195] mmcblk0: error -110 sending stop command, original cmd response 0x900, card status 0x400900 ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1422338 Title: I/O errors on mmc partitions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1422338/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
