Thanks for your report.

Here is what causes the error from your logs:
Oct  4 01:24:33 ubuntu kernel: [22122.204492] ata1.00: exception Emask 0x0 SAct 
0x0 SErr 0x0 action 0x0
Oct  4 01:24:33 ubuntu kernel: [22122.204498] ata1.00: BMDMA stat 0x24
Oct  4 01:24:33 ubuntu kernel: [22122.204504] ata1.00: failed command: READ DMA 
EXT
Oct  4 01:24:33 ubuntu kernel: [22122.204514] ata1.00: cmd 
25/00:08:58:33:01/00:00:19:00:00/e0 tag 0 dma 4096 in
Oct  4 01:24:33 ubuntu kernel: [22122.204516]          res 
51/40:00:58:33:01/40:00:19:00:00/e0 Emask 0x9 (media error)
Oct  4 01:24:33 ubuntu kernel: [22122.204520] ata1.00: status: { DRDY ERR }
Oct  4 01:24:33 ubuntu kernel: [22122.204524] ata1.00: error: { UNC }
Oct  4 01:24:33 ubuntu kernel: [22122.261486] ata1.00: configured for UDMA/33
Oct  4 01:24:33 ubuntu kernel: [22122.261507] sd 0:0:0:0: [sda] Unhandled sense 
code
Oct  4 01:24:33 ubuntu kernel: [22122.261511] sd 0:0:0:0: [sda]  Result: 
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Oct  4 01:24:33 ubuntu kernel: [22122.261520] sd 0:0:0:0: [sda]  Sense Key : 
Medium Error [current] [descriptor]
Oct  4 01:24:33 ubuntu kernel: [22122.261527] Descriptor sense data with sense 
descriptors (in hex):
Oct  4 01:24:33 ubuntu kernel: [22122.261531]         72 03 11 04 00 00 00 0c 
00 0a 80 00 00 00 00 00 
Oct  4 01:24:33 ubuntu kernel: [22122.261546]         19 01 33 58 
Oct  4 01:24:33 ubuntu kernel: [22122.261553] sd 0:0:0:0: [sda]  Add. Sense: 
Unrecovered read error - auto reallocate failed
Oct  4 01:24:33 ubuntu kernel: [22122.261560] sd 0:0:0:0: [sda] CDB: Read(10): 
28 00 19 01 33 58 00 00 08 00
Oct  4 01:24:33 ubuntu kernel: [22122.261574] end_request: I/O error, dev sda, 
sector 419509080
Oct  4 01:24:33 ubuntu kernel: [22122.261603] ata1: EH complete
Oct  4 01:24:33 ubuntu kernel: [22122.261947] EXT4-fs error (device sda1): 
ext4_find_entry:933: inode #13110689: comm fontconfig-vood: reading directory 
lblock 0
Oct  4 01:24:33 ubuntu kernel: [22122.261956] Aborting journal on device sda1-8.
Oct  4 01:24:33 ubuntu kernel: [22122.262378] EXT4-fs (sda1): Remounting 
filesystem read-only

It seems that there is a hardware problem with your hard drive. Please check 
your drive or retry your installation with a new drive. 
Thanks and good luck!


** Changed in: ubiquity (Ubuntu)
       Status: New => Invalid

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Title:
  ubiquity-dm crashed with ValueError in command(): invalid literal for
  int() with base 10: ''

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