Looks like a hardware problem with your sd card. Can you replace it and try again?
Dec 2 07:16:01 ubuntu kernel: [ 21.116291] mmcblk0rpmb: error -110 transferring data, sector 8064, nr 8, cmd response 0x900, card status 0xb00 Dec 2 07:16:01 ubuntu kernel: [ 21.116298] mmcblk0rpmb: retrying using single block read Dec 2 07:16:01 ubuntu kernel: [ 21.118357] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 Dec 2 07:16:01 ubuntu kernel: [ 21.120398] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 Dec 2 07:16:01 ubuntu kernel: [ 21.122453] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 Dec 2 07:16:01 ubuntu kernel: [ 21.124492] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 Dec 2 07:16:01 ubuntu kernel: [ 21.126545] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 Dec 2 07:16:01 ubuntu kernel: [ 21.128585] mmcblk0rpmb: timed out sending r/w cmd command, card status 0x400900 ** Changed in: grub-installer (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1398318 Title: bay trail efi install failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1398318/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs