Nietypowy problem z dyskiem Seagate Momentus SpinPoint M8 na akumulatorze

[andy]

Od jakiegoś*czasu mam dziwny problem z dyskiem:
Seagate Momentus SpinPoint M8 (AF)

Na zasilaniu z baterii (na zasilaczu ten problem nie występuje) co jakiś czas (~1 minuty) słychać jakby start dysku. Czym to może być spowodowane?

Poniżej odczyt parametrów systemu SMART:

andy@nabuchodonozor:~$ sudo smartctl --all /dev/sda
smartctl 6.4 2014-10-07 r4002 [x86_64-linux-3.16.0-4-amd64] (local build)
Copyright (C) 2002-14, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Momentus SpinPoint M8 (AF)
Device Model:     ST1000LM024 HN-M101MBB
Serial Number:    S2WZJ90C668426
LU WWN Device Id: 5 0004cf 207c30e73
Firmware Version: 2AR20002
User Capacity:    1,000,204,886,016 bytes [1,00 TB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    5400 rpm
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 6
SATA Version is:  SATA 3.0, 3.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Mon Apr  6 22:38:45 2015 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

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

General SMART Values:
Offline data collection status:  (0x00)	Offline data collection activity
					was never started.
					Auto Offline Data Collection: Disabled.
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: 		(12480) seconds.
Offline data collection
capabilities: 			 (0x5b) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					No Conveyance Self-test supported.
					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.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   2) minutes.
Extended self-test routine
recommended polling time: 	 ( 208) minutes.
SCT capabilities: 	       (0x003f)	SCT Status supported.
					SCT Error Recovery Control supported.
					SCT Feature Control supported.
					SCT Data Table supported.

SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   100   100   051    Pre-fail  Always       -       19
  2 Throughput_Performance  0x0026   252   252   000    Old_age   Always       -       0
  3 Spin_Up_Time            0x0023   089   089   025    Pre-fail  Always       -       3461
  4 Start_Stop_Count        0x0032   097   097   000    Old_age   Always       -       3200
  5 Reallocated_Sector_Ct   0x0033   252   252   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   252   252   051    Old_age   Always       -       0
  8 Seek_Time_Performance   0x0024   252   252   015    Old_age   Offline      -       0
  9 Power_On_Hours          0x0032   100   100   000    Old_age   Always       -       8228
 10 Spin_Retry_Count        0x0032   252   252   051    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       173
 12 Power_Cycle_Count       0x0032   098   098   000    Old_age   Always       -       2513
 13 Read_Soft_Error_Rate    0x003a   100   100   000    Old_age   Always       -       0
181 Program_Fail_Cnt_Total  0x0022   100   100   000    Old_age   Always       -       2214379
191 G-Sense_Error_Rate      0x0022   100   100   000    Old_age   Always       -       71
192 Power-Off_Retract_Count 0x0022   252   252   000    Old_age   Always       -       0
193 Load_Cycle_Count        0x0032   092   092   000    Old_age   Always       -       89433
194 Temperature_Celsius     0x0002   059   036   000    Old_age   Always       -       41 (Min/Max 19/67)
195 Hardware_ECC_Recovered  0x003a   100   100   000    Old_age   Always       -       0
196 Reallocated_Event_Count 0x0032   252   252   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   252   252   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   252   252   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0036   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x002a   100   100   000    Old_age   Always       -       24
240 Head_Flying_Hours       0x0032   100   100   000    Old_age   Always       -       7935
241 Total_LBAs_Written      0x0032   093   089   000    Old_age   Always       -       10125625
242 Total_LBAs_Read         0x0032   092   088   000    Old_age   Always       -       12040309
254 Free_Fall_Sensor        0x0032   252   252   000    Old_age   Always       -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      3920         -
# 2  Short offline       Aborted by host               80%      3920         -
# 3  Short offline       Interrupted (host reset)      90%       572         -
# 4  Extended offline    Interrupted (host reset)      90%        80         -
# 5  Short offline       Completed without error       00%        80         -
# 6  Short offline       Completed without error       00%        80         -
# 7  Short offline       Completed without error       00%        14         -
# 8  Short offline       Completed without error       00%        14         -
# 9  Short offline       Completed without error       00%        12         -
#10  Short offline       Completed without error       00%         1         -

SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever been run
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Completed [00% left] (0-65535)
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.

Tutaj nagranie na którym słychać to włączenie - https://www.dropbox.com/s/47mlf8rt26v5gdl/Glos00004.3gp