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Re: SATA - System Freezes

Henry Ritzlmayr wrote:
Am Dienstag, den 17.06.2008, 13:25 -0400 schrieb Jorge Fábregas:
Hello Everyone,

I'm running Fedora 8 and my system freezes (for about 20 to 40 seconds) a couple of times a day. When it does I see this on /var/log/messages:

------------------------------- cut here -------------------------------------

kernel: ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
kernel: ata3.00: cmd ca/00:50:67:85:03/00:00:00:00:00/e0 tag 0 dma 40960 out
kernel:          res 40/00:00:76:6c:03/84:00:10:00:00/e0 Emask 0x4 (timeout)
kernel: ata3.00: status: { DRDY }
kernel: ata3: port is slow to respond, please be patient (Status 0xd0)
kernel: ata3: device not ready (errno=-16), forcing hardreset
kernel: ata3: soft resetting link
kernel: ata3.00: configured for UDMA/33
kernel: ata3: EH complete
kernel: sd 2:0:0:0: [sdc] 321672960 512-byte hardware sectors (164697 MB)
kernel: sd 2:0:0:0: [sdc] Write Protect is off
kernel: sd 2:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA

------------------------------- cut here -------------------------------------

/dev/sdc is my main drive. The only thing I can think of...is that this drive is actually a PATA drive connected to the SATA controller on MoBo thru a "SATA-TO-IDE Adapter" that I connect on the drive. Perhaps the converter is faulty...or could this be a known issue with libata? Anyone had same problem?


Many months ago I had the exact same output. Lots of google voodo and
try and error solved it. My issue was that on one outlet of the power
supply there where to many (3) drives connected. After recabling all
went away. Others claimed that they got rid of the problem be refitting
the sata cables.



I was just about to suggest checking the power supply. I had a power supply that wouldn't supply enough voltage on the 5V rail. My system would freeze. Turned out to be a known fault with the brand of powersupplies.

Took two power supplies to find out that it was a known fault. Argh. Warranties are useless on some products. I also learned that the sensor voltages were not accurate in the BIOS in comparison to a digital voltmeter on the actual power cable.

Robin Laing

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