[Bug 501950] Re: Randomly missing harddrive on reboot : dmesg -> "model number mismatch"

[Mr. Bunny]

My optical drive is disappearing, and it seems to be persistent. This is
on Ubuntu Karmic 9.04 2.6.31-21-generic #59-Ubuntu SMP Wed Mar 24
07:28:56 UTC 2010 i686 GNU/Linux.

Relevant dmesg lines appear to be 
ata2.01: model number mismatch 'SAMSUNG CD-R/RW SW-252S' != 'SAMSUNG CD-R/RW SW-252S !'
ata2.01: revalidation failsed (errno=-19)

The other optical drive is correctly recognized. Please let me know if I
could help by providing additional information or testing.

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Randomly missing harddrive on reboot : dmesg -> "model number mismatch"
https://bugs.launchpad.net/bugs/501950
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