Most recent kernel where this bug did *NOT* occur: none Distribution: Fedora Core 6 x86_64 Hardware Environment: Asus P5B-E motherboard, Intel Core 2 Duo, 1gig DDR2, Seagate 320gig 7200.10 SATA Software Environment: FC6 packages, XFCE 4.4 Description of problem: I have an Asus P5B-E motherboard that has an i965 chipset with an ICH8R. I also have a Seagate 7200.10 320 gig S-ATA hard drive. Both devices support NCQ. NCQ is only being enabled on the hard drive and not on the host controller. I have a feeling that the "ahci" driver is seeing the AsusTek Subsystem ID (see lspci below) and not enabling full support of my ICH8R. Version-Release number of selected component (if applicable): 2.6.19-1.2895.fc6 How reproducible: Always Steps to Reproduce: 1. Boot with AHCI or RAID configuration. 2. AHCI is detected, but NCQ is not. 3. NCQ is not enabled. Actual results: NCQ disabled. Expected results: NCQ enabled. Additional info: lspci -vv 00:1f.2 RAID bus controller: Intel Corporation 82801HR/HO/HH (ICH8R/DO/DH) SATA RAID Controller (rev 02) Subsystem: ASUSTeK Computer Inc. Unknown device 81ec 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: 0 Interrupt: pin B routed to IRQ 2299 Region 0: I/O ports at ec00 [size=8] Region 1: I/O ports at e880 [size=4] Region 2: I/O ports at e800 [size=8] Region 3: I/O ports at e480 [size=4] Region 4: I/O ports at e400 [size=32] Region 5: Memory at febff800 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/4 Enable+ Address: fee01000 Data: 0099 Capabilities: [70] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot+,D3cold-) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities: [a8] #12 [0010] --------------------------------------------- dmesg libata version 2.00 loaded. ahci 0000:00:1f.2: version 2.0 ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 19 usb 3-1: device not accepting address 2, error -71 PCI: Setting latency timer of device 0000:00:1f.2 to 64 ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 6 ports ? Gbps 0x3f impl RAID mode ahci 0000:00:1f.2: flags: 64bit ilck stag led pmp pio The last line should be: ahci 0000:00:1f.2: flags: 64bit ncq ilck stag led pmp pio Hard drive dmesg: ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata1.00: ATA-7, max UDMA/133, 625142448 sectors: LBA48 NCQ (depth 0/32) I posted this on the redhat bugzilla, but it seems they didn't care. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=223564
Fixed for me in 2.6.20. Thanks...