I confirm I have a similar problem on Ubuntu 14.04 amd64 with similar
hardware, the error is "failed to get NCQ Send/Recv Log Emask 0x1". In
my case the disk is not available, it is not listed with lshw.
My HDD Model: ATA Samsung SSD 840 Series (250GB)
My sysboard is an Asus M3N78-EM, with updated BIOS.
Some details:
$ lspci -vvnn | grep -i sata
00:09.0 IDE interface [0101]: NVIDIA Corporation MCP78S [GeForce 8200] SATA
Controller (non-AHCI mode) [10de:0ad0] (rev a2) (prog-if 85 [Master SecO PriO])
$ tail -n 2000 /var/log/syslog | grep -B 3 -A 1 -i samsung
Jul 6 16:38:08 user-pc kernel: [ 1.432094] ata4: SATA link up 3.0 Gbps
(SStatus 123 SControl 300)
Jul 6 16:38:08 user-pc kernel: [ 1.432109] ata5: SATA link up 1.5 Gbps
(SStatus 113 SControl 300)
Jul 6 16:38:08 user-pc kernel: [ 1.432638] ata4.00: failed to get NCQ
Send/Recv Log Emask 0x1
Jul 6 16:38:08 user-pc kernel: [ 1.432641] ata4.00: ATA-9: Samsung SSD 840
Series, DXT06B0Q, max UDMA/133
Jul 6 16:38:08 user-pc kernel: [ 1.432643] ata4.00: 488397168 sectors,
multi 16: LBA48 NCQ (depth 31/32)
--
Jul 6 17:27:05 user-pc kernel: [ 1.512031] ata4: SATA link up 3.0 Gbps
(SStatus 123 SControl 300)
Jul 6 17:27:05 user-pc kernel: [ 1.512051] ata3: SATA link up 3.0 Gbps
(SStatus 123 SControl 300)
Jul 6 17:27:05 user-pc kernel: [ 1.512798] ata4.00: failed to get NCQ
Send/Recv Log Emask 0x1
Jul 6 17:27:05 user-pc kernel: [ 1.512801] ata4.00: ATA-9: Samsung SSD 840
Series, DXT06B0Q, max UDMA/133
Jul 6 17:27:05 user-pc kernel: [ 1.512804] ata4.00: 488397168 sectors,
multi 16: LBA48 NCQ (depth 31/32)
***I quickly test with Ubuntu 12.04 and the Bug wasn't present:
This is from lshw output with Ubuntu 12.04 amd64:
*-disk:1
description: ATA Disk
product: Samsung SSD 840
physical id: 1
bus info: scsi@1:0.0.0
logical name: /dev/sdb
version: DXT0
serial: S14GNEACA42011P
size: 232GiB (250GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 signature=00048686
*-volume:0
description: Linux filesystem partition
vendor: Linux
physical id: 1
bus info: scsi@1:0.0.0,1
logical name: /dev/sdb1
version: 1.0
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https://bugs.launchpad.net/bugs/1269777
Title:
[ Ubuntu 14.04 - Lenovo W510 - SSD Samsung 840 PRO 512GB] Sudden Read-
Only Filesystem
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