It looks like your hard drive or the installation media is failing:
Oct 15 23:07:28 ubuntu kernel: [ 1265.979031] blk_update_request: I/O error,
dev sdb, sector 625141632
Oct 15 23:07:28 ubuntu partman: No matching physical volumes found
Oct 15 23:07:28 ubuntu partman: /dev/sdb1: read failed after 0 of 4096 at 0:
Input/output error
Oct 15 23:07:28 ubuntu partman: /dev/sdb1: read failed after 0 of 4096 at
4096: Input/output error
Oct 15 23:07:28 ubuntu partman: /dev/sdb5: read failed after 0 of 4096 at
4254007296: Input/output error
Oct 15 23:07:28 ubuntu partman: /dev/sdb5: read failed after 0 of 4096 at
4254064640: Input/output error
Oct 15 23:07:28 ubuntu partman: /dev/sdb5: read failed after 0 of 4096 at 0:
Input/output error
Oct 15 23:07:28 ubuntu partman: /dev/sdb5: read failed after 0 of 4096 at
4096: Input/output error
Oct 15 23:07:28 ubuntu partman: Reading all physical volumes. This may take
a while...
Oct 15 23:07:28 ubuntu kernel: [ 1266.153291] buffer_io_error: 12 callbacks
suppressed
Oct 15 23:07:28 ubuntu kernel: [ 1266.153295] Buffer I/O error on dev sdb,
logical block 0, async page read
Oct 15 23:07:28 ubuntu kernel: [ 1266.153354] Buffer I/O error on dev sdb,
logical block 0, async page read
Oct 15 23:07:28 ubuntu kernel: [ 1266.153398] Buffer I/O error on dev sdb,
logical block 0, async page read
Oct 15 23:07:28 ubuntu kernel: [ 1266.153441] Buffer I/O error on dev sdb,
logical block 0, async page read
Oct 15 23:07:28 ubuntu kernel: [ 1266.153481] Buffer I/O error on dev sdb,
logical block 0, async page read
Oct 15 23:07:28 ubuntu kernel: [ 1266.153522] Buffer I/O error on dev sdb,
logical block 0, async page read
I do not know what /dev/sdb points to, but you may wish to verify that
this device is in good health, and/or attempt install on a different
device.
** Changed in: ubiquity (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1723814
Title:
read only file system error on a new partition table
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