Peter van Heusden pvh at
Fri Mar 17 12:14:07 UTC 2006


I have a newly installed FreeBSD 6.0 release machine on which I am
getting the following error on the console:

"ad4: req=0xc23bc258 SETFEATURES  SET TRANSFER MODE semaphore timeout !!
DANGER Will Robinson !!"

This is generally associated with heightened disk activity, but it
happens inevitably after a while (minutes or hours) if the machine is

The atacontrol list shows:

ATA channel 0:
    Master:      no device present
    Slave:       no device present
ATA channel 1:
    Master: acd0 <ATAPI CDROM 48X/V120Y> ATA/ATAPI revision 0
    Slave:       no device present
ATA channel 2:
    Master:  ad4 <ST320423A/3.02> ATA/ATAPI revision 5
    Slave:       no device present
ATA channel 3:
    Master:      no device present
    Slave:       no device present

and the ATA controller in use is a Promise PDC20262. Smartctl shows that
all values on the disk are ok - i.e. it doesn't look like the disk is
failing. Does anyone know what I can do to fix error?


Copyright (c) 1992-2005 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California. All rights reserved.
FreeBSD 6.0-RELEASE #0: Wed Mar 15 12:48:25 SAST 2006
    root at
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium II/Pentium II Xeon/Celeron (532.81-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x665  Stepping = 5

real memory  = 335478784 (319 MB)
avail memory = 318865408 (304 MB)
npx0: [FAST]
npx0: <math processor> on motherboard
npx0: INT 16 interface
acpi0: <GBT AWRDACPI> on motherboard
acpi0: Power Button (fixed)
pci_link0: <ACPI PCI Link LNKA> irq 11 on acpi0
pci_link1: <ACPI PCI Link LNKB> on acpi0
pci_link2: <ACPI PCI Link LNKC> irq 5 on acpi0
pci_link3: <ACPI PCI Link LNKD> irq 10 on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port
0xcf8-0xcff,0x4000-0x4041,0x5000-0x500f on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82443BX (440 BX) host to PCI bridge> mem
0xe0000000-0xe3ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xf000-0xf00f at device 7.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0xa000-0xa01f irq
10 at device 7.2 on pci0
usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
pci0: <bridge> at device 7.3 (no driver attached)
xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xa400-0xa47f mem
0xe9020000-0xe902007f irq 5 at device 10.0 on pci0
miibus0: <MII bus> on xl0
xlphy0: <3c905C 10/100 internal PHY> on miibus0
xlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
xl0: Ethernet address: 00:50:da:e2:35:3b
pci0: <multimedia, audio> at device 12.0 (no driver attached)
pci0: <input device> at device 12.1 (no driver attached)
atapci1: <Promise PDC20262 UDMA66 controller> port
mem 0xe9000000-0xe901ffff irq 5 at device 14.0 on pci0
ata2: <ATA channel 0> on atapci1
ata3: <ATA channel 1> on atapci1
acpi_tz0: <Thermal Zone> on acpi0
fdc0: <floppy drive controller> port 0x3f2-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
ppc0: <Standard parallel printer port> port 0x378-0x37f irq 7 on acpi0
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model NetMouse/NetScroll Optical, device ID 0
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc97ff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
uhub1: vendor 0x0000 USB HUB, class 9/0, rev 1.10/0.04, addr 2
uhub1: 4 ports with 4 removable, self powered
Timecounter "TSC" frequency 532812068 Hz quality 800
Timecounters tick every 1.000 msec
acd0: CDROM <ATAPI CDROM 48X/V120Y> at ata1-master UDMA33
ad4: 19536MB <Seagate ST320423A 3.02> at ata2-master UDMA66
Trying to mount root from ufs:/dev/ad4s1a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted

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