HD constantly spinning down (and up)

I have an Asus F201E installed with arch and laptop-mode-tools.
No matter how I configure laptop mode, the HD is constantly spinning down.
I can be working on something and literally within several seconds hear the HD spin up twice
I don't care about battery life at this point, I'm afraid this will literally kill my HD.
My current laptop-mode.conf:
LM_BATT_MAX_LOST_WORK_SECONDS=600
LM_AC_MAX_LOST_WORK_SECONDS=360
CONTROL_READAHEAD=1
LM_READAHEAD=3072
NOLM_READAHEAD=128
CONTROL_NOATIME=0
USE_RELATIME=1
CONTROL_HD_IDLE_TIMEOUT=1
LM_AC_HD_IDLE_TIMEOUT_SECONDS=200
LM_BATT_HD_IDLE_TIMEOUT_SECONDS=200
NOLM_HD_IDLE_TIMEOUT_SECONDS=7200
CONTROL_HD_POWERMGMT=1
BATT_HD_POWERMGMT=254
LM_AC_HD_POWERMGMT=254
NOLM_AC_HD_POWERMGMT=254
CONTROL_HD_WRITECACHE=1
NOLM_AC_HD_WRITECACHE=1
NOLM_BATT_HD_WRITECACHE=0
LM_HD_WRITECACHE=0
Last edited by yuvadm (2013-08-22 10:26:08)

If you do hdparm -B /dev/sdX then what does it tell you the APM is set to?  I have never used laptop-mode-tools, so I cannot help you with that specifically.  But what happens if you set the Advanced Power Mode specifcally?  That is, do something like hdparm -B 254 /dev/sdX.  I chose 254 because 255 will completely disable APM, but this feature is not supported by all drives.  So typically a value of 254 will achieve the same thing.  You might also want to try using something almost as high, but not quite (like 250), as that should still prevent your drive from spinning down.

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    21/05/2013 23:31:26.583 mDNSResponder[39]: mDNS_RegisterInterface: Frequent transitions for interface en1 (192.168.1.47)
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    21/05/2013 23:31:26.596 configd[18]: network changed: v4(en1!:192.168.1.47) DNS Proxy SMB
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    21/05/2013 23:31:27.000 kernel[0]: nd6_na_input: duplicate IP6 address fe80:0005::22c9:d0ff:fe8f:b1eb
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    21/05/2013 23:31:28.803 mDNSResponder[39]: mDNS_RegisterInterface: Frequent transitions for interface en0 (192.168.1.190)
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    21/05/2013 23:31:28.819 mDNSResponder[39]:  78: DNSServiceGetAddrInfo      v4v6 13-courier.push.apple.com. PID[-1]()
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    21/05/2013 23:31:41.088 WindowServer[93]: Display 0x78c8d2fe: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferTable (256, 3)
    21/05/2013 23:31:41.089 WindowServer[93]: Display 0x78c8d1b0: MappedDisplay Unit 0; ColorProfile { 3, "HD 709-A Calibrated"}; TransferTable (256, 3)
    21/05/2013 23:31:41.103 WindowServer[93]: Display 0x78c8d2fe: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferTable (256, 3)
    21/05/2013 23:31:41.104 WindowServer[93]: Display 0x78c8d1b0: MappedDisplay Unit 0; ColorProfile { 3, "HD 709-A Calibrated"}; TransferTable (256, 3)
    21/05/2013 23:31:41.843 WindowServer[93]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.
    21/05/2013 23:31:41.846 WindowServer[93]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.
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