Small update:
I couldn't find any 3.3v level serial adapter so I connected it to the UART on a Raspberry Pi which didn't help much: on reset, the CPU on the SSD apparently sends SysRQ-compatible bits out the line as I get a SysRq Help page spammed every time I reset the thing. But at least I know I have the serial port connected right. No console I/O so far, it doesn't seem to take any command.
Since I had it connected to a USB-SATA bridge for easy powering (using a battery as power source), testing went smooth until the battery went flat, I decided to connect it to a USB port on a linux box here and I suddenly have SATA comms back! It's not doing any disk I/O, so still something wrong, but the CPU must be working. I can do Identify and SMART read. Logs and output:
dmesg:
Code:
[1309699.609845] usb 1-6: new high-speed USB device number 58 using xhci_hcd
[1309699.739778] usb 1-6: New USB device found, idVendor=174c, idProduct=5136
[1309699.739781] usb 1-6: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[1309699.739782] usb 1-6: Product: AS2105
[1309699.739783] usb 1-6: Manufacturer: ASMedia
[1309699.739784] usb 1-6: SerialNumber: 00000000000000000000
[1309699.740410] usb-storage 1-6:1.0: USB Mass Storage device detected
[1309699.740543] scsi host14: usb-storage 1-6:1.0
[1309700.738548] scsi 14:0:0:0: Direct-Access ASMT 2105 0 PQ: 0 ANSI: 6
[1309700.738843] sd 14:0:0:0: Attached scsi generic sg13 type 0
[1309700.739213] sd 14:0:0:0: [sdn] 4032 512-byte logical blocks: (2.06 MB/1.96 MiB)
[1309700.739608] sd 14:0:0:0: [sdn] Write Protect is off
[1309700.739610] sd 14:0:0:0: [sdn] Mode Sense: 43 00 00 00
[1309700.739998] sd 14:0:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[1309700.741965] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.741968] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.741969] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.741971] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.741972] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.741975] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.742592] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.742593] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.742595] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.742596] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.742597] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.742598] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.743201] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.743202] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.743203] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.743204] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.743205] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.743206] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.743806] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.743807] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.743808] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.743809] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.743809] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.743810] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.743813] ldm_validate_partition_table(): Disk read failed.
[1309700.744431] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.744432] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.744433] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.744434] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.744435] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.744435] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.745056] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.745058] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.745059] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.745060] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.745061] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.745062] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.745681] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.745682] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.745683] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.745684] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.745684] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.745685] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.746306] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.746308] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.746309] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.746310] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.746311] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.746312] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.746324] Dev sdn: unable to read RDB block 0
[1309700.746930] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.746932] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.746933] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.746934] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.746934] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.746935] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.747555] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309700.747556] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309700.747557] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309700.747558] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309700.747559] blk_update_request: critical medium error, dev sdn, sector 0
[1309700.747560] Buffer I/O error on dev sdn, logical block 0, async page read
[1309700.748807] sdn: unable to read partition table
[1309700.750080] sd 14:0:0:0: [sdn] Attached SCSI disk
[1309776.500872] scsi_io_completion: 4 callbacks suppressed
[1309776.500877] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.500879] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.500880] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.500882] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.500883] blk_update_request: 4 callbacks suppressed
[1309776.500884] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.500886] buffer_io_error: 3 callbacks suppressed
[1309776.500887] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.501513] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.501515] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.501516] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.501518] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.501519] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.501520] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.503641] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.503643] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.503645] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.503646] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.503647] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.503649] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.504297] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.504299] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.504301] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.504302] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.504303] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.504305] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.504934] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.504936] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.504938] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.504939] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.504940] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.504942] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.505557] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.505558] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.505560] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.505561] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.505562] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.505563] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.505567] ldm_validate_partition_table(): Disk read failed.
[1309776.506180] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.506181] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.506182] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.506183] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.506184] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.506184] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.506805] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.506806] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.506807] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.506807] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.506808] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.506809] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.507409] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.507410] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.507411] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.507412] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.507413] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.507413] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.508012] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309776.508013] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309776.508015] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309776.508016] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309776.508016] blk_update_request: critical medium error, dev sdn, sector 0
[1309776.508017] Buffer I/O error on dev sdn, logical block 0, async page read
[1309776.508021] Dev sdn: unable to read RDB block 0
[1309776.510452] sdn: unable to read partition table
[1309789.514014] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 30 ep 2 with no TDs queued?
[1309789.514573] scsi_io_completion: 6 callbacks suppressed
[1309789.514577] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309789.514579] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309789.514580] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309789.514582] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 20 00
[1309789.514583] blk_update_request: 6 callbacks suppressed
[1309789.514584] blk_update_request: critical medium error, dev sdn, sector 0
[1309789.515205] sd 14:0:0:0: [sdn] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[1309789.515207] sd 14:0:0:0: [sdn] Sense Key : Medium Error [current]
[1309789.515208] sd 14:0:0:0: [sdn] Add. Sense: Unrecovered read error
[1309789.515210] sd 14:0:0:0: [sdn] CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
[1309789.515211] blk_update_request: critical medium error, dev sdn, sector 0
[1309789.515212] buffer_io_error: 5 callbacks suppressed
[1309789.515213] Buffer I/O error on dev sdn, logical block 0, async page read
smartctl -i:
Code:
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.3.0-1-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: TOSHIBA Q300
Serial Number: 75LB51AUKNRX
LU WWN Device Id: 5 00080d c0026eae6
Firmware Version: SAFM11.1
User Capacity: 2,064,384 bytes [2.06 MB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Form Factor: 2.5 inches
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Thu Mar 3 02:05:23 2016 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
smartctl -A:
Code:
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.3.0-1-amd64] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF READ SMART DATA SECTION ===
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
9 Power_On_Hours 0x0012 100 100 000 Old_age Always - 0
12 Power_Cycle_Count 0x0012 100 100 000 Old_age Always - 0
167 Unknown_Attribute 0x0022 100 100 000 Old_age Always - 0
168 Unknown_Attribute 0x0012 100 100 000 Old_age Always - 0
169 Unknown_Attribute 0x0003 000 000 010 Pre-fail Always FAILING_NOW 0
173 Unknown_Attribute 0x0012 200 200 000 Old_age Always - 0
192 Power-Off_Retract_Count 0x0012 100 100 000 Old_age Always - 0
194 Temperature_Celsius 0x0023 069 069 030 Pre-fail Always - 31 (Min/Max 0/31)
Now, I don't know in what mode the SSD booted up or if any of the values are 'real', but it seems it's not completely dead after all. Interesting...
Update:
After unplugging and plugging it back in, it shows the same data. So now it's booting in whatever mode it's in (not using the NAND flash, as the capacity now reports something like 2MB), and it's staying there. I can finally see the firmware revision, and there does seem to be an update, but I'm not going to try to flash it as-is, unless there are no more other things to try.