Hi Tejun, My laptop seems to suffer from too frequent head unloads, thus I find your workaround hack useful, wish to add my information to it as well as a small patch, a manpage and a Makefile (which may encourage you to run 'make dist' and put a proper versioned and released tarball somehwere). Attached is dmidecode and hdparm -I output. Thanks, Kel.
/dev/sda: ATA device, with non-removable media Model Number: ST9200420AS Serial Number: 5SH07BHD Firmware Revision: 3.AAA Standards: Supported: 7 6 5 4 Likely used: 8 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 390721968 device size with M = 1024*1024: 190782 MBytes device size with M = 1000*1000: 200049 MBytes (200 GB) Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, no device specific minimum R/W multiple sector transfer: Max = 16 Current = 16 Advanced power management level: 254 Recommended acoustic management value: 254, current value: 0 DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * SMART feature set Security Mode feature set * Power Management feature set * Write cache * Look-ahead * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * DOWNLOAD_MICROCODE * Advanced Power Management feature set SET_MAX security extension * 48-bit Address feature set * Device Configuration Overlay feature set * Mandatory FLUSH_CACHE * FLUSH_CACHE_EXT * SMART error logging * SMART self-test * IDLE_IMMEDIATE with UNLOAD * SATA-I signaling speed (1.5Gb/s) * Native Command Queueing (NCQ) * Phy event counters Device-initiated interface power management * Software settings preservation * SMART Command Transport (SCT) feature set Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count not supported: enhanced erase Checksum: correct
# dmidecode 2.9 SMBIOS 2.4 present. 34 structures occupying 1772 bytes. Table at 0x000FC640. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: American Megatrends Inc. Version: 303 Release Date: 03/31/2008 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 1024 kB Characteristics: ISA is supported PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed ESCD support is available Boot from CD is supported Selectable boot is supported EDD is supported 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 KB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Printer services are supported (int 17h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported Smart battery is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported BIOS Revision: 3.3 Firmware Revision: 161.11 Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: ASUSTeK Computer Inc. Product Name: F6S Version: 1.0 Serial Number: NF1S8308820003 UUID: FE3E81DC-ED18-6C86-2180-001FC632F7CC Wake-up Type: Power Switch SKU Number: Family: Handle 0x0002, DMI type 2, 15 bytes Base Board Information Manufacturer: ASUSTeK Computer Inc. Product Name: F6S Version: 1.0 Serial Number: BSN12345678901234567 Asset Tag: ATN12345678901234567 Features: Board is a hosting board Board requires at least one daughter board Board is replaceable Location In Chassis: MIDDLE Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 Handle 0x0003, DMI type 3, 21 bytes Chassis Information Manufacturer: ASUSTeK Computer Inc. Type: Notebook Lock: Not Present Version: 1.0 Serial Number: CSN12345678901234567 Asset Tag: ATN12345678901234567 Boot-up State: Safe Power Supply State: Safe Thermal State: Other Security Status: Other OEM Information: 0x00000000 Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 Handle 0x0004, DMI type 4, 35 bytes Processor Information Socket Designation: Socket 478 Type: Central Processor Family: Pentium M Manufacturer: Intel ID: 76 06 01 00 FF FB EB BF Signature: Type 0, Family 6, Model 23, Stepping 6 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) CMOV (Conditional move instruction supported) PAT (Page attribute table) PSE-36 (36-bit page size extension) CLFSH (CLFLUSH instruction supported) DS (Debug store) ACPI (ACPI supported) MMX (MMX technology supported) FXSR (Fast floating-point save and restore) SSE (Streaming SIMD extensions) SSE2 (Streaming SIMD extensions 2) SS (Self-snoop) HTT (Hyper-threading technology) TM (Thermal monitor supported) PBE (Pending break enabled) Version: Intel(R) Core(TM)2 Duo CPU T8300 @ 2.40GHz Voltage: 1.2 V External Clock: 200 MHz Max Speed: 2400 MHz Current Speed: 2400 MHz Status: Populated, Enabled Upgrade: Socket 423 L1 Cache Handle: 0x0005 L2 Cache Handle: 0x0006 L3 Cache Handle: Not Provided Serial Number: PSN12345678901234567 Asset Tag: PATN1234567890123456 Part Number: PPN12345678901234567 Handle 0x0005, DMI type 7, 19 bytes Cache Information Socket Designation: L1-Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Back Location: Internal Installed Size: 32 KB Maximum Size: 32 KB Supported SRAM Types: Other Installed SRAM Type: Other Speed: Unknown Error Correction Type: Parity System Type: Data Associativity: 8-way Set-associative Handle 0x0006, DMI type 7, 19 bytes Cache Information Socket Designation: L2-Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Back Location: Internal Installed Size: 3072 KB Maximum Size: 3072 KB Supported SRAM Types: Other Installed SRAM Type: Other Speed: Unknown Error Correction Type: Single-bit ECC System Type: Unified Associativity: Other Handle 0x0007, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J1A1 Internal Connector Type: None External Reference Designator: PS2Mouse External Connector Type: PS/2 Port Type: Mouse Port Handle 0x0008, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J1A1 Internal Connector Type: None External Reference Designator: Keyboard External Connector Type: PS/2 Port Type: Keyboard Port Handle 0x0009, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J2A2 Internal Connector Type: None External Reference Designator: USB1 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x000A, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J2A2 Internal Connector Type: None External Reference Designator: USB2 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x000B, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J4A1 Internal Connector Type: None External Reference Designator: LPT 1 External Connector Type: DB-25 male Port Type: Parallel Port ECP/EPP Handle 0x000C, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J2A1 Internal Connector Type: None External Reference Designator: COM A External Connector Type: DB-9 male Port Type: Serial Port 16550A Compatible Handle 0x000D, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J6A1 Internal Connector Type: None External Reference Designator: Audio Mic In External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x000E, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J6A1 Internal Connector Type: None External Reference Designator: Audio Line In External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x000F, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J6A1 Internal Connector Type: None External Reference Designator: Audio Line Out External Connector Type: Mini Jack (headphones) Port Type: Audio Port Handle 0x0010, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: USB3 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0011, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: USB4 External Connector Type: Access Bus (USB) Port Type: USB Handle 0x0012, DMI type 8, 9 bytes Port Connector Information Internal Reference Designator: J5A1 Internal Connector Type: None External Reference Designator: LAN External Connector Type: RJ-45 Port Type: Network Port Handle 0x0013, DMI type 9, 13 bytes System Slot Information Designation: PCIE1 Type: x1 PCI Express Current Usage: Available Length: Short ID: 1 Characteristics: 3.3 V is provided PME signal is supported Handle 0x0014, DMI type 10, 6 bytes On Board Device Information Type: Video Status: Enabled Description: To Be Filled By O.E.M. Handle 0x0015, DMI type 10, 6 bytes On Board Device Information Type: SCSI Controller Status: Disabled Description: To Be Filled By O.E.M. Handle 0x0016, DMI type 10, 6 bytes On Board Device Information Type: Ethernet Status: Enabled Description: To Be Filled By O.E.M. Handle 0x0017, DMI type 10, 6 bytes On Board Device Information Type: Token Ring Status: Enabled Description: To Be Filled By O.E.M. Handle 0x0018, DMI type 13, 22 bytes BIOS Language Information Installable Languages: 1 en|US|iso8859-1 Currently Installed Language: en|US|iso8859-1 Handle 0x0019, DMI type 16, 15 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 8 GB Error Information Handle: Not Provided Number Of Devices: 2 Handle 0x001A, DMI type 19, 15 bytes Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000FFFFFFFF Range Size: 4 GB Physical Array Handle: 0x0019 Partition Width: 0 Handle 0x001B, DMI type 17, 27 bytes Memory Device Array Handle: 0x0019 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 2048 MB Form Factor: SODIMM Set: None Locator: SODIMM0 Bank Locator: BANK0 Type: DDR2 Type Detail: Synchronous Speed: 667 MHz (1.5 ns) Manufacturer: N/A Serial Number: N/A Asset Tag: N/A Part Number: N/A Handle 0x001C, DMI type 20, 19 bytes Memory Device Mapped Address Starting Address: 0x00000000400 Ending Address: 0x000032E87FF Range Size: 52129 kB Physical Device Handle: 0x001B Memory Array Mapped Address Handle: 0x001A Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x001D, DMI type 17, 27 bytes Memory Device Array Handle: 0x0019 Error Information Handle: Not Provided Total Width: 64 bits Data Width: 64 bits Size: 2048 MB Form Factor: SODIMM Set: None Locator: SODIMM1 Bank Locator: BANK1 Type: DDR2 Type Detail: Synchronous Speed: 667 MHz (1.5 ns) Manufacturer: N/A Serial Number: N/A Asset Tag: N/A Part Number: N/A Handle 0x001E, DMI type 20, 19 bytes Memory Device Mapped Address Starting Address: 0x00000000800 Ending Address: 0x000033173FF Range Size: 52315 kB Physical Device Handle: 0x001D Memory Array Mapped Address Handle: 0x001A Partition Row Position: Unknown Interleave Position: Unknown Interleaved Data Depth: Unknown Handle 0x001F, DMI type 22, 26 bytes Portable Battery Location: Left side of System Manufacturer: Nikon Battery Manufacture Date: 08/11/97 Serial Number: NI00123 Name: Nikon Ultra Plus Chemistry: Nickel Cadmium Design Capacity: Unknown Design Voltage: Unknown SBDS Version: SMART Ver 0123 Maximum Error: Unknown OEM-specific Information: 0x00000000 Handle 0x0020, DMI type 200, 27 bytes OEM-specific Type Header and Data: C8 1B 20 00 01 02 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Strings: ASUSTeK Computer Inc. Notebook 1.0 Handle 0x0021, DMI type 127, 4 bytes End Of Table
