Hello, On 2012 I bought a PCI-E 4 SATA 6.0Gbps Syba SI-PEX40064 which comes with a Marvell chipset 88SE9215. This card seems not being supported yet in Linux kernel; it behaves bad on some circumstances that aren't clear to me. I experience some errors with hard drives and optical drives. Never it writes optical media. My mobo is a Gigabyte GA-A75-UD4H. I can't write optical media and sometimes reading/writing to hard disks is slow and faulty. I've disabled the Native Command Queue and also I've forced the speed of all ATA controllers to 1.5Gbps. There is no difference. The problem persists. If I can help improving something I'll do whatever steps necessary to provide debug information to the kernel developers and apply kernel patches. Thanks in advance, All the best Emilio. *** Output of lspci -v *** 0a:00.0 SATA controller: Marvell Technology Group Ltd. Device 9215 (rev 11) (prog-if 01 [AHCI 1.0]) Subsystem: Marvell Technology Group Ltd. Device 9215 Flags: bus master, fast devsel, latency 0, IRQ 30 I/O ports at 7f00 [size=8] I/O ports at 7e00 [size=4] I/O ports at 7d00 [size=8] I/O ports at 7c00 [size=4] I/O ports at 7b00 [size=32] Memory at fd1ff000 (32-bit, non-prefetchable) [size=2K] [virtual] Expansion ROM at fd100000 [disabled] [size=64K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Express Legacy Endpoint, MSI 00 Capabilities: [e0] SATA HBA v0.0 Capabilities: [100] Advanced Error Reporting Kernel driver in use: ahci Kernel modules: ahci *** dmesg info *** [434967.722795] ata9: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen [434967.722807] ata9: irq_stat 0x80400040, connection status changed [434967.722815] ata9: SError: { PHYRdyChg CommWake DevExch } [434967.722827] ata9: hard resetting link [434969.192373] ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [434969.193014] ata9.00: FORCE: horkage modified (noncq) [434969.215990] ata9.00: ATA-7: WDC WD3200AAJS-22RYA0, 12.01B01, max UDMA/133 [434969.215997] ata9.00: 625142448 sectors, multi 0: LBA48 NCQ (not used) [434969.216882] ata9.00: configured for UDMA/133 [434969.216903] ata9: EH complete [434970.126924] ata9: exception Emask 0x10 SAct 0x0 SErr 0x190002 action 0xe frozen [434970.126934] ata9: irq_stat 0x80400000, PHY RDY changed [434970.126940] ata9: SError: { RecovComm PHYRdyChg 10B8B Dispar } [434970.126949] ata9: hard resetting link [434970.836345] ata9: SATA link down (SStatus 0 SControl 300) [434970.916242] ata9: hard resetting link [434974.892261] ata9: SATA link down (SStatus 0 SControl 300) [434974.892269] ata9.00: link offline, clearing class 1 to NONE [434974.892277] ata9: limiting SATA link speed to 1.5 Gbps [434975.320012] ata9: hard resetting link [434977.432186] ata9: SATA link down (SStatus 0 SControl 310) [434977.432194] ata9.00: link offline, clearing class 1 to NONE [434977.432201] ata9.00: disabled [434977.432226] ata9: EH complete [434977.432327] ata9.00: detaching (SCSI 8:0:0:0) [434977.898235] ata9: exception Emask 0x10 SAct 0x0 SErr 0x4000000 action 0xe frozen [434977.898248] ata9: irq_stat 0x80000040, connection status changed [434977.898255] ata9: SError: { DevExch } [434977.898267] ata9: hard resetting link [434983.748063] ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [434983.748703] ata9.00: FORCE: horkage modified (noncq) [434983.771571] ata9.00: ATA-7: WDC WD3200AAJS-22RYA0, 12.01B01, max UDMA/133 [434983.771579] ata9.00: 625142448 sectors, multi 0: LBA48 NCQ (not used) [434983.772480] ata9.00: configured for UDMA/133 [434983.772501] ata9: EH complete [435061.615367] ata9: exception Emask 0x10 SAct 0x0 SErr 0x190002 action 0xe frozen [435061.615378] ata9: irq_stat 0x80400000, PHY RDY changed [435061.615386] ata9: SError: { RecovComm PHYRdyChg 10B8B Dispar } [435061.615396] ata9: hard resetting link [435062.326353] ata9: SATA link down (SStatus 0 SControl 300) [435067.386234] ata9: hard resetting link [435067.702284] ata9: SATA link down (SStatus 0 SControl 300) [435067.702297] ata9: limiting SATA link speed to 1.5 Gbps [435072.762107] ata9: hard resetting link [435073.078040] ata9: SATA link down (SStatus 0 SControl 310) [435073.078052] ata9.00: disabled [435073.078078] ata9: EH complete [435073.078105] ata9.00: detaching (SCSI 8:0:0:0) [435101.716072] ata8: exception Emask 0x10 SAct 0x0 SErr 0x4050000 action 0xe frozen [435101.716084] ata8: irq_stat 0x80400040, connection status changed [435101.716091] ata8: SError: { PHYRdyChg CommWake DevExch } [435101.716104] ata8: hard resetting link [435102.585464] ata8: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [435102.586086] ata8.00: FORCE: horkage modified (noncq) [435102.607691] ata8.00: ATA-7: WDC WD3200AAJS-22RYA0, 12.01B01, max UDMA/133 [435102.607699] ata8.00: 625142448 sectors, multi 0: LBA48 NCQ (not used) [435102.608621] ata8.00: configured for UDMA/133 [435102.608642] ata8: EH complete [435205.123301] ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [435205.123328] ata7.00: cmd a0/00:00:00:02:00/00:00:00:00:00/a0 tag 24 pio 16388 in [435205.123335] ata7.00: status: { DRDY } [435205.123342] ata7: hard resetting link [435205.599244] ata7: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [435205.605549] ata7.00: configured for UDMA/100 [435205.607873] ata7: EH complete [435471.690523] ata8: exception Emask 0x10 SAct 0x0 SErr 0x190002 action 0xe frozen [435471.690534] ata8: irq_stat 0x80400000, PHY RDY changed [435471.690542] ata8: SError: { RecovComm PHYRdyChg 10B8B Dispar } [435471.690552] ata8: hard resetting link [435472.401447] ata8: SATA link down (SStatus 0 SControl 300) [435477.489306] ata8: hard resetting link [435477.805479] ata8: SATA link down (SStatus 0 SControl 300) [435477.805492] ata8: limiting SATA link speed to 1.5 Gbps [435482.865194] ata8: hard resetting link [435483.181208] ata8: SATA link down (SStatus 0 SControl 310) [435483.181216] ata8.00: disabled [435483.181240] ata8: EH complete [435483.181310] ata8.00: detaching (SCSI 7:0:0:0) [435484.957529] ata9: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen [435484.957541] ata9: irq_stat 0x80000040, connection status changed [435484.957548] ata9: SError: { CommWake DevExch } [435484.957560] ata9: hard resetting link [435485.829144] ata9: SATA link up 3.0 Gbps (SStatus 123 SControl 300) [435485.829757] ata9.00: FORCE: horkage modified (noncq) [435485.852091] ata9.00: ATA-7: WDC WD3200AAJS-22RYA0, 12.01B01, max UDMA/133 [435485.852097] ata9.00: 625142448 sectors, multi 0: LBA48 NCQ (not used) [435485.852972] ata9.00: configured for UDMA/133 [435485.853104] ata9: EH complete [435491.987610] ata9: exception Emask 0x10 SAct 0x0 SErr 0x190002 action 0xe frozen [435491.987622] ata9: irq_stat 0x80400000, PHY RDY changed [435491.987629] ata9: SError: { RecovComm PHYRdyChg 10B8B Dispar } [435491.987639] ata9: hard resetting link [435492.696998] ata9: SATA link down (SStatus 0 SControl 300) [435497.712883] ata9: hard resetting link [435498.028521] ata9: SATA link down (SStatus 0 SControl 300) [435498.028534] ata9: limiting SATA link speed to 1.5 Gbps [435503.088781] ata9: hard resetting link [435503.404705] ata9: SATA link down (SStatus 0 SControl 310) [435503.404717] ata9.00: disabled [435503.404744] ata9: EH complete [435503.404862] ata9.00: detaching (SCSI 8:0:0:0) -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html