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

[R33D3M33R]

Same bug here. Kubuntu 10.04, 64-bit, optical drive dissapeared today.
Dmesg says:

[ 6035.780513] ata1.00: model number mismatch 'MATSHITADVD-RAM UJ-861H' != 'MATSHITADVD-RAM UJm8v1H ` ` ` ` ` ` ` `'
[ 6035.780529] ata1.00: revalidation failed (errno=-19)
[ 6035.780542] ata1.00: disabled
[ 6040.900641] ata1.00: ATAPI: MATSHITADVD-RAM UJ-861H, 1.50, max MWDMA2
[ 6040.940513] ata1.00: model number mismatch 'MATSHITADVD-RAM UJ-861H' != 'MATSHITADVD-RAM UJm8v1H ` ` ` ` ` ` ` `'
[ 6040.940526] ata1.00: revalidation failed (errno=-19)
[ 6040.940545] ata1.00: limiting speed to MWDMA2:PIO3

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