I missed to mention that I also switched BIOS setting forcing AHCI mode, but the disk is not available.
$ dmesg | egrep "ata4" [ 1.195248] ata4: SATA max UDMA/133 abar m8192@0xfcf76000 port 0xfcf76180 irq 40 [ 1.512031] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 1.512798] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [ 1.512801] ata4.00: ATA-9: Samsung SSD 840 Series, DXT06B0Q, max UDMA/133 [ 1.512804] ata4.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) [ 6.512027] ata4.00: qc timeout (cmd 0x2f) [ 6.512034] ata4.00: failed to get Identify Device Data, Emask 0x5 [ 6.512043] ata4.00: failed to set xfermode (err_mask=0x40) [ 6.832022] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [ 6.832784] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [ 11.832036] ata4.00: qc timeout (cmd 0x2f) [ 11.832043] ata4.00: failed to get Identify Device Data, Emask 0x5 [ 11.832054] ata4.00: failed to set xfermode (err_mask=0x40) [ 11.832058] ata4: limiting SATA link speed to 1.5 Gbps [ 11.832060] ata4.00: limiting speed to UDMA/133:PIO3 [ 12.152021] ata4: SATA link up <unknown> (SStatus 103 SControl 310) [ 12.152182] ata4.00: failed to get NCQ Send/Recv Log Emask 0x1 [ 17.152034] ata4.00: qc timeout (cmd 0x2f) [ 17.152039] ata4.00: failed to get Identify Device Data, Emask 0x5 [ 17.152045] ata4.00: failed to set xfermode (err_mask=0x40) [ 17.152047] ata4.00: disabled [ 17.152057] ata4: hard resetting link [ 17.472022] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 17.472027] ata4: EH complete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1269777 Title: [ Ubuntu 14.04 - Lenovo W510 - SSD Samsung 840 PRO 512GB] Sudden Read- Only Filesystem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1269777/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
