Crash while copying files

[Matthew Paul Thomas]

Natty alpha 2
Natty daily 20110210

"We're sorry; the installer crashed ... To help the developers understand what went wrong, include the following detail in your bug report, and attach the files /var/log/syslog and /var/log/partman:"

Ubuntu 10.10 and Mac OS X install fine on the same computer.

[Evan (ev)]

I'm becoming increasingly convinced there is a problem with your CD drive. The following is from the syslog you posted:

Feb 9 18:17:04 ubuntu kernel: [ 723.219899] sr 0:0:0:0: [sr0] Unhandled sense code
Feb 9 18:17:04 ubuntu kernel: [ 723.219906] sr 0:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Feb 9 18:17:04 ubuntu kernel: [ 723.219912] sr 0:0:0:0: [sr0] Sense Key : Hardware Error [current]
Feb 9 18:17:04 ubuntu kernel: [ 723.219920] Info fld=0x8154
Feb 9 18:17:04 ubuntu kernel: [ 723.219923] sr 0:0:0:0: [sr0] Add. Sense: Logical unit communication CRC error (Ultra-DMA/32)
Feb 9 18:17:04 ubuntu kernel: [ 723.219932] sr 0:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 85 53 00 00 0a 00
Feb 9 18:17:04 ubuntu kernel: [ 723.219948] end_request: I/O error, dev sr0, sector 136524
Feb 9 18:17:04 ubuntu kernel: [ 723.219956] Buffer I/O error on device sr0, logical block 34131
Feb 9 18:17:04 ubuntu kernel: [ 723.219962] Buffer I/O error on device sr0, logical block 34132
Feb 9 18:17:04 ubuntu kernel: [ 723.219967] Buffer I/O error on device sr0, logical block 34133
Feb 9 18:17:04 ubuntu kernel: [ 723.219970] Buffer I/O error on device sr0, logical block 34134
Feb 9 18:17:04 ubuntu kernel: [ 723.219975] Buffer I/O error on device sr0, logical block 34135
Feb 9 18:17:04 ubuntu kernel: [ 723.219979] Buffer I/O error on device sr0, logical block 34136
Feb 9 18:17:04 ubuntu kernel: [ 723.219983] Buffer I/O error on device sr0, logical block 34137
Feb 9 18:17:04 ubuntu kernel: [ 723.219987] Buffer I/O error on device sr0, logical block 34138
Feb 9 18:17:04 ubuntu kernel: [ 723.219991] Buffer I/O error on device sr0, logical block 34139
Feb 9 18:17:04 ubuntu kernel: [ 723.488043] SQUASHFS error: squashfs_read_data failed to read block 0x20d96f2
Feb 9 18:17:04 ubuntu kernel: [ 723.488050] SQUASHFS error: Unable to read fragment cache entry [20d96f2]
Feb 9 18:17:04 ubuntu kernel: [ 723.488055] SQUASHFS error: Unable to read page, block 20d96f2, size 8e1a
Feb 9 18:17:04 ubuntu kernel: [ 723.488062] SQUASHFS error: Unable to read fragment cache entry [20d96f2]
Feb 9 18:17:04 ubuntu kernel: [ 723.488066] SQUASHFS error: Unable to read page, block 20d96f2, size 8e1a

[Matthew Paul Thomas (mpt)]

It was indeed a problem with the CD drive; Ubuntu Natty was apparently just more sensitive to it.

However, it seems rather unfortunate that the kernel knows it's a hardware error but Ubiquity does not. It would be more useful (not to mention making Ubuntu seem more reliable) if Ubiquity itself could say "Hey, there's a problem with this drive".