Disk freezes but passes SMART test hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error }

Hi --

I have a Seagate hda: ST380020A, ATA DISK drive. The drive passes the
SMART test, but will freeze after sometime. Dmesg says this:


hda: DMA disabled
hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hda: drive_cmd: error=0x04 { DriveStatusError }
ide: failed opcode was: 0xef
hda: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
hda: drive_cmd: error=0x04 { DriveStatusError }
ide: failed opcode was: 0xfb
hda: DMA disabled

-----------------------------------------------

This the information from hdparm:

sudo hdparm -i /dev/hda

/dev/hda:

Model=ST380020A, FwRev=3.64, SerialNo=5GCMHYQK
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=unknown, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=4317/15/255, CurSects=16512525, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: device does not report version:

* signifies the current active mode

-----------------------------------------------------------

The drive is "healthy" according to the SMART test:

sudo smartctl -Hc /dev/hda
smartctl version 5.32 Copyright (C) 2002-4 Bruce Allen
Home page is http://smartmontools.sourceforge.net/

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: ( 420) seconds.
Offline data collection
capabilities: (0x1d) SMART execute Offline immediate.
No Auto Offline data collection support.
Abort Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
No Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
No General Purpose Logging support.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 82) minutes.

--------------------------------------------------------------

I can't figure out what's going on...I noticed that when I'm using the
browser, the machine doesn't freeze. When I stop, in a few minutes it
freezes. It's as if the disk goes to sleep, but I've set thos
configurations of on /etc/hdparm.conf

Any ideas?
TIA

SD


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