I haven't used the system with these errors in a day or two and I came back and noticed 5 exceptions in dmesg. These are all the same: ata1: exception Emask 0x10 SAct 0x0 SErr 0x90200 action 0xe frozen ata1: irq_stat 0x00400000, PHY RDY changed ata1: SError: { Persist PHYRdyChg 10B8B } ata1: hard resetting link ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: configured for UDMA/133 ata1: EH complete sd 0:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Any idea what caused these? This is on a ATI SB600 SATA controller: 00:12.0 SATA controller [0106]: ATI Technologies Inc SB600 Non-Raid-5 SATA [1002:4380] (prog-if 01 [AHCI 1.0]) Subsystem: Albatron Corp. Unknown device [17f2:5999] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 64 Interrupt: pin A routed to IRQ 18 Region 0: I/O ports at ff00 [size=8] Region 1: I/O ports at fe00 [size=4] Region 2: I/O ports at fd00 [size=8] Region 3: I/O ports at fc00 [size=4] Region 4: I/O ports at fb00 [size=16] Region 5: Memory at fe02f000 (32-bit, non-prefetchable) [size=1K] Capabilities: [60] Power Management version 2 Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [70] #12 [0010] >From boot time: ata1: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f100 irq 18 ata2: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f180 irq 18 ata3: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f200 irq 18 ata4: SATA max UDMA/133 abar m1024@0xfe02f000 port 0xfe02f280 irq 18 ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata1.00: ATA-7: HDT722525DLA380, V44OA96A, max UDMA/133 ata1.00: 488397168 sectors, multi 16: LBA48 NCQ (depth 31/32) ata1.00: configured for UDMA/133 ata2: SATA link down (SStatus 0 SControl 300) ata3: SATA link down (SStatus 0 SControl 300) ata4: SATA link down (SStatus 0 SControl 300) scsi 0:0:0:0: Direct-Access ATA HDT722525DLA380 V44O PQ: 0 ANSI: 5 sd 0:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 0:0:0:0: [sda] 488397168 512-byte hardware sectors (250059 MB) sd 0:0:0:0: [sda] Write Protect is off sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00 sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sd 0:0:0:0: [sda] Attached SCSI disk Thanks, -Andrew - 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