[kwlug-disc] Constant freezups

Fri Dec 11 10:46:57 EST 2009

I am having an issue with a desktop computer running Ubuntu 9.10.  I've
tried asking this question in the forum and in the mailing list and I
have yet to get a response so I was hoping that some here locally would
know!

I'm sure it is a hardware issue with my hard drive but I've tried
scanning it and nothing is found to be wrong.

It all began with a power failure.  After that one user has very
frequent system freezes.  In fact, exactly every half hour the system
will freeze for about 3-5 minutes.

The same messages keep appearing in the system log as follows:

Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6500.453221] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6500.454344] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6500.454348] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6500.454362] ata1: EH
complete
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6503.536428] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6503.537382] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6503.537387] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6503.537409] ata1: EH
complete
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6506.944669] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6506.945608] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6506.945611] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6506.945629] ata1: EH
complete
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6510.194468] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6510.195427] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6510.195431] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6510.195454] ata1: EH
complete
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6513.277728] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6513.278670] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6513.278674] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6513.278694] ata1: EH
complete
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.519196] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520165] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520168] ata1.00:
configured for UDMA/133
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520192] sd 0:0:0:0:
[sda] Unhandled sense code
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520194] sd 0:0:0:0:
[sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520197] sd 0:0:0:0:
[sda] Sense Key : Medium Error [current] [descriptor]
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520201] Descriptor
sense data with sense descriptors (in hex):
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520202]         72
03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520209]         1b
8b 23 22 
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520212] sd 0:0:0:0:
[sda] Add. Sense: Unrecovered read error - auto reallocate failed
Dec 11 10:23:32 bookworm-acerdesktop kernel: [ 6516.520232] ata1: EH
complete
Dec 11 10:23:35 bookworm-acerdesktop kernel: [ 6520.402370] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:35 bookworm-acerdesktop kernel: [ 6520.403308] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:35 bookworm-acerdesktop kernel: [ 6520.403312] ata1.00:
configured for UDMA/133
Dec 11 10:23:35 bookworm-acerdesktop kernel: [ 6520.403328] ata1: EH
complete
Dec 11 10:23:39 bookworm-acerdesktop kernel: [ 6523.810616] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:39 bookworm-acerdesktop kernel: [ 6523.811856] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:39 bookworm-acerdesktop kernel: [ 6523.811860] ata1.00:
configured for UDMA/133
Dec 11 10:23:39 bookworm-acerdesktop kernel: [ 6523.811874] ata1: EH
complete
Dec 11 10:23:42 bookworm-acerdesktop kernel: [ 6526.893816] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:42 bookworm-acerdesktop kernel: [ 6526.894755] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:42 bookworm-acerdesktop kernel: [ 6526.894759] ata1.00:
configured for UDMA/133
Dec 11 10:23:42 bookworm-acerdesktop kernel: [ 6526.894778] ata1: EH
complete
Dec 11 10:23:45 bookworm-acerdesktop kernel: [ 6529.977101] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:45 bookworm-acerdesktop kernel: [ 6529.978090] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:45 bookworm-acerdesktop kernel: [ 6529.978096] ata1.00:
configured for UDMA/133
Dec 11 10:23:45 bookworm-acerdesktop kernel: [ 6529.978122] ata1: EH
complete
Dec 11 10:23:48 bookworm-acerdesktop kernel: [ 6533.218629] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:48 bookworm-acerdesktop kernel: [ 6533.219620] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:48 bookworm-acerdesktop kernel: [ 6533.219626] ata1.00:
configured for UDMA/133
Dec 11 10:23:48 bookworm-acerdesktop kernel: [ 6533.219653] ata1: EH
complete
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.469355] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470330] ata1.00:
SB600 AHCI: limiting to 255 sectors per cmd
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470337] ata1.00:
configured for UDMA/133
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470373] sd 0:0:0:0:
[sda] Unhandled sense code
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470378] sd 0:0:0:0:
[sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470385] sd 0:0:0:0:
[sda] Sense Key : Medium Error [current] [descriptor]
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470394] Descriptor
sense data with sense descriptors (in hex):
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470399]         72
03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00 
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470416]         1b
8b 23 22 
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470423] sd 0:0:0:0:
[sda] Add. Sense: Unrecovered read error - auto reallocate failed
Dec 11 10:23:51 bookworm-acerdesktop kernel: [ 6536.470460] ata1: EH
complete

This is a production machine and has become almost unusable.  Any help
would be appreciated.

Thanks,

Keith