Comment 99 for bug 550559

Acer 5750z same issue

00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04) (prog-if 01 [AHCI 1.0])
 Subsystem: Acer Incorporated [ALI] Device 0504
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
 Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0
 Interrupt: pin B routed to IRQ 40
 Region 0: I/O ports at 2088 [size=8]
 Region 1: I/O ports at 209c [size=4]
 Region 2: I/O ports at 2080 [size=8]
 Region 3: I/O ports at 2098 [size=4]
 Region 4: I/O ports at 2060 [size=32]
 Region 5: Memory at c0608000 (32-bit, non-prefetchable) [size=2K]
 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
  Address: fee0100c Data: 4159
 Capabilities: [70] Power Management version 3
  Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-)
  Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
 Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
 Capabilities: [b0] PCI Advanced Features
  AFCap: TP+ FLR+
  AFCtrl: FLR-
  AFStatus: TP-
 Kernel driver in use: ahci
 Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04)
 Subsystem: Acer Incorporated [ALI] Device 0504
 Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Interrupt: pin C routed to IRQ 7
 Region 0: Memory at c0606000 (64-bit, non-prefetchable) [size=256]
 Region 4: I/O ports at 2040 [size=32]
 Kernel modules: i2c-i801

[ 97.695518] ata1.00: exception Emask 0x0 SAct 0x59 SErr 0x0 action 0x0
[ 97.695571] ata1.00: irq_stat 0x40000008
[ 97.695609] ata1.00: failed command: READ FPDMA QUEUED
[ 97.695645] ata1.00: cmd 60/08:30:38:41:2f/00:00:20:00:00/40 tag 6 ncq 4096 in
[ 97.695646] res 41/40:08:38:41:2f/00:00:20:00:00/60 Emask 0x409 (media error) <F>
[ 97.695723] ata1.00: status: { DRDY ERR }
[ 97.695744] ata1.00: error: { UNC }
[ 97.697629] ata1.00: configured for UDMA/100
[ 97.697657] ata1: EH complete
[ 101.612365] ata1.00: exception Emask 0x0 SAct 0x1f SErr 0x0 action 0x0
[ 101.612418] ata1.00: irq_stat 0x40000008
[ 101.612456] ata1.00: failed command: READ FPDMA QUEUED
[ 101.612493] ata1.00: cmd 60/08:00:38:41:2f/00:00:20:00:00/40 tag 0 ncq 4096 in
[ 101.612494] res 41/40:08:38:41:2f/00:00:20:00:00/60 Emask 0x409 (media error) <F>
[ 101.612570] ata1.00: status: { DRDY ERR }
[ 101.612591] ata1.00: error: { UNC }
[ 101.614473] ata1.00: configured for UDMA/100
[ 101.614502] ata1: EH complete
... and so on

And I don't think this should stay in "undecided". This looks scary.