in every couple minutes, the message come up "cdrom_pc_intr: The drive appears confused".

I installed CentOS with "all-generic-ide noacpi nolacpi", and set the boot option to "all-generic-ide noacpi nolacpi irqpoll"
I search the internet, some post suggest update kernel to 2.6.20, I will try, but don't know will it help.

Any suggest will be appreciated.

And here is some information:

# cat /proc/interrupts
CPU0 CPU1
0: 775199 0 XT-PIC timer
1: 170 0 XT-PIC i8042
2: 0 0 XT-PIC cascade
3: 1 0 XT-PIC uhci_hcd:usb2
5: 1 0 XT-PIC uhci_hcd:usb3, uhci_hcd:usb6, ehci_hcd:usb7
6: 6 0 XT-PIC floppy
7: 1 0 XT-PIC uhci_hcd:usb4, ehci_hcd:usb8
8: 1 0 XT-PIC rtc
9: 0 0 XT-PIC acpi
11: 6394 0 XT-PIC ide4, uhci_hcd:usb1
14: 1 0 XT-PIC uhci_hcd:usb5
15: 99590 0 XT-PIC ide0
97: 938 0 PCI-MSI eth0
NMI: 177 78
LOC: 774801 774846
ERR: 0
MIS: 0

#lspci -v
00:00.0 Host bridge: Intel Corporation DRAM Controller (rev 02)
Subsystem: ASUSTeK Computer Inc. Unknown device 8276
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information

00:01.0 PCI bridge: Intel Corporation PCI Express Root Port (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fa000000-fe9fffff
Prefetchable memory behind bridge: 00000000d0000000-00000000dff00000
Capabilities: [88] #0d [0000]
Capabilities: [80] Power Management version 3
Capabilities: [90] Message Signalled Interrupts: 64bit- Queue=0/0 Enable+
Capabilities: [a0] Express Root Port (Slot+) IRQ 0

00:1a.0 USB Controller: Intel Corporation USB UHCI Controller #4 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at c800 [size=32]
Capabilities: [50] Vendor Specific Information

00:1a.1 USB Controller: Intel Corporation USB UHCI Controller #5 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 3
I/O ports at c880 [size=32]
Capabilities: [50] Vendor Specific Information

00:1a.2 USB Controller: Intel Corporation USB UHCI Controller #6 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at cc00 [size=32]
Capabilities: [50] Vendor Specific Information

00:1a.7 USB Controller: Intel Corporation USB2 EHCI Controller #2 (rev 02) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 5
Memory at f9fffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port
Capabilities: [98] Vendor Specific Information

00:1b.0 Audio device: Intel Corporation HD Audio Controller (rev 02)
Subsystem: ASUSTeK Computer Inc. Unknown device 829f
Flags: bus master, fast devsel, latency 0, IRQ 15
Memory at f9ff8000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
Capabilities: [70] Express Unknown type IRQ 0

00:1c.0 PCI bridge: Intel Corporation PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Prefetchable memory behind bridge: 00000000f8f00000-00000000f8f00000
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable+
Capabilities: [90] #0d [0000]
Capabilities: [a0] Power Management version 2

00:1c.4 PCI bridge: Intel Corporation PCI Express Port 5 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: feb00000-febfffff
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable+
Capabilities: [90] #0d [0000]
Capabilities: [a0] Power Management version 2

00:1c.5 PCI bridge: Intel Corporation PCI Express Port 6 (rev 02) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Memory behind bridge: fea00000-feafffff
Capabilities: [40] Express Root Port (Slot+) IRQ 0
Capabilities: [80] Message Signalled Interrupts: 64bit- Queue=0/0 Enable+
Capabilities: [90] #0d [0000]
Capabilities: [a0] Power Management version 2

00:1d.0 USB Controller: Intel Corporation USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 7
I/O ports at c080 [size=32]
Capabilities: [50] Vendor Specific Information

00:1d.1 USB Controller: Intel Corporation USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 14
I/O ports at c400 [size=32]
Capabilities: [50] Vendor Specific Information

00:1d.2 USB Controller: Intel Corporation USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 5
I/O ports at c480 [size=32]
Capabilities: [50] Vendor Specific Information

00:1d.7 USB Controller: Intel Corporation USB2 EHCI Controller #1 (rev 02) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0, IRQ 7
Memory at f9fff800 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Debug port
Capabilities: [98] Vendor Specific Information

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) (prog-if 01 [Subtractive decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=32
Capabilities: [50] #0d [0000]

00:1f.0 ISA bridge: Intel Corporation Unknown device 2918 (rev 02)
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information

00:1f.2 IDE interface: Intel Corporation 2 port SATA IDE Controller (rev 02) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 15
I/O ports at b000 [size=8]
I/O ports at ac00 [size=4]
I/O ports at a880 [size=8]
I/O ports at a800 [size=4]
I/O ports at a480 [size=16]
I/O ports at a400 [size=16]
Capabilities: [70] Power Management version 3
Capabilities: [b0] Vendor Specific Information

00:1f.3 SMBus: Intel Corporation SMBus Controller (rev 02)
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: medium devsel, IRQ 14
Memory at f9fff400 (64-bit, non-prefetchable) [size=256]
I/O ports at 0400 [size=32]

00:1f.5 IDE interface: Intel Corporation 2 port SATA IDE Controller (rev 02) (prog-if 85 [Master SecO PriO])
Subsystem: ASUSTeK Computer Inc. Unknown device 8277
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 15
I/O ports at c000 [size=8]
I/O ports at bc00 [size=4]
I/O ports at b880 [size=8]
I/O ports at b800 [size=4]
I/O ports at b480 [size=16]
I/O ports at b400 [size=16]
Capabilities: [70] Power Management version 3
Capabilities: [b0] Vendor Specific Information

01:00.0 VGA compatible controller: nVidia Corporation Unknown device 0404 (rev a1) (prog-if 00 [VGA])
Subsystem: eVga.com. Corp. Unknown device c733
Flags: bus master, fast devsel, latency 0, IRQ 11
Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at fa000000 (64-bit, non-prefetchable) [size=32M]
I/O ports at dc00 [size=128]
Expansion ROM at fe9e0000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Capabilities: [68] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable-
Capabilities: [78] Express Endpoint IRQ 0

02:00.0 Ethernet controller: Attansic Technology Corp. L1 Gigabit Ethernet Adapter (rev b0)
Subsystem: ASUSTeK Computer Inc. Unknown device 8226
Flags: bus master, fast devsel, latency 0, IRQ 97
Memory at feac0000 (64-bit, non-prefetchable) [size=256K]
Expansion ROM at feaa0000 [disabled] [size=128K]
Capabilities: [40] Power Management version 2
Capabilities: [48] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable+
Capabilities: [58] Express Endpoint IRQ 0

03:00.0 IDE interface: Marvell Technology Group Ltd. Unknown device 6121 (rev b2) (prog-if 8f [Master SecP SecO PriP PriO])
Subsystem: ASUSTeK Computer Inc. Unknown device 82a2
Flags: bus master, fast devsel, latency 0, IRQ 11
I/O ports at ec00 [size=8]
I/O ports at e880 [size=4]
I/O ports at e800 [size=8]
I/O ports at e480 [size=4]
I/O ports at e400 [size=16]
Memory at febffc00 (32-bit, non-prefetchable) [size=1K]
Capabilities: [48] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: 64bit- Queue=0/0 Enable-
Capabilities: [e0] Express Legacy Endpoint IRQ 0

Hmmm.........
Quote:

Try changing this boot option, remove the all-generic-ide noacpi nolacpi parts from the kernel line in /boot/grub.conf

You should also update the system ASAP, you seem to be way out of date at least kernel wise;
https://rhn.redhat.com/errata/RHSA-2008-0154.html

FYI: just so you know the Red Hat / CentOS are patched from the upstream vanilla kernel source, do not let version numbers alone confuse the issue.

Let's see the output (both with your boot options and my suggestion) from the typed command;

cat /proc/modules | grep ata

Thanks for your response.

I've run "yum update" just now.

I remove all those boot options, then kernel panic, with following message:

Memory for crash kernel (0x0 to 0x0) notwithin permissible range
PCI: BIOS Bug: MCFG area ate0000000 is not E820-reserved
PCI: Not using MMCONFIG.
ACPI: Getting cpuindex for acpiid 0x3
ACPI: Getting cpuindex for acpiid 0x4
Red Hat nash version 5.1.19.6 starting
Unable to access resume device (LABEL=SWAP-hda2)
mount: could not find filesystem '/dev/root'
setuproot: moving /dev failed: No such file or directory
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or dirctory
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!

But, with the "all-generic-ide noapic nolapic irqpoll" options, the system could come up and works.

# uname -a
Linux JOE107 2.6.18-53.1.14.el5 #1 SMP Wed Mar 5 11:37:38 EST 2008 x86_64 x86_64 x86_64 GNU/Linux

# cat /proc/modules | grep ata
ata_piix 49861 0 - Live 0xffffffff881e6000
libata 160977 1 ata_piix, Live 0xffffffff881bd000
scsi_mod 186873 1 libata, Live 0xffffffff8814c000

#dmesg
Linux version 2.6.18-53.1.14.el5 (mockbuild@builder6.centos.org) (gcc version 4.1.2 20070626 (Red Hat 4.1.2-14)) #1 SMP Wed Mar 5 11:37:38 EST 2008
Command line: ro root=LABEL=/1 noapic nolapic all-generic-ide irqpoll rhgb quiet
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009dc00 (usable)
BIOS-e820: 000000000009dc00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 00000000cff80000 (usable)
BIOS-e820: 00000000cff80000 - 00000000cff8e000 (ACPI data)
BIOS-e820: 00000000cff8e000 - 00000000cffe0000 (ACPI NVS)
BIOS-e820: 00000000cffe0000 - 00000000d0000000 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved)
BIOS-e820: 0000000100000000 - 0000000230000000 (usable)
DMI 2.4 present.
ACPI: RSDP (v002 ACPIAM ) @ 0x00000000000fbdc0
ACPI: XSDT (v001 A_M_I_ OEMXSDT 0x07000719 MSFT 0x00000097) @ 0x00000000cff80100
ACPI: FADT (v003 A_M_I_ OEMFACP 0x07000719 MSFT 0x00000097) @ 0x00000000cff80290
ACPI: MADT (v001 A_M_I_ OEMAPIC 0x07000719 MSFT 0x00000097) @ 0x00000000cff80390
ACPI: MCFG (v001 A_M_I_ OEMMCFG 0x07000719 MSFT 0x00000097) @ 0x00000000cff80400
ACPI: OEMB (v001 A_M_I_ AMI_OEM 0x07000719 MSFT 0x00000097) @ 0x00000000cff8e040
ACPI: HPET (v001 A_M_I_ OEMHPET 0x07000719 MSFT 0x00000097) @ 0x00000000cff87fd0
ACPI: OSFR (v001 A_M_I_ OEMOSFR 0x07000719 MSFT 0x00000097) @ 0x00000000cff88010
ACPI: DSDT (v001 A0807 A0807000 0x00000000 INTL 0x20060113) @ 0x0000000000000000
No NUMA configuration found
Faking a node at 0000000000000000-0000000230000000
Bootmem setup node 0 0000000000000000-0000000230000000
Memory for crash kernel (0x0 to 0x0) notwithin permissible range
disabling kdump
On node 0 totalpages: 2064322
DMA zone: 2698 pages, LIFO batch:0
DMA32 zone: 833464 pages, LIFO batch:31
Normal zone: 1228160 pages, LIFO batch:31
ACPI: PM-Timer IO Port: 0x808
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x00] enabled)
Processor #0 6:15 APIC version 20
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x01] enabled)
Processor #1 6:15 APIC version 20
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x82] disabled)
ACPI: LAPIC (acpi_id[0x04] lapic_id[0x83] disabled)
ACPI: Skipping IOAPIC probe due to 'noapic' option.
ACPI: HPET id: 0xffffffff base: 0xfed00000
Using ACPI for processor (LAPIC) configuration information
Intel MultiProcessor Specification v1.4
Virtual Wire compatibility mode.
OEM ID: P5K-SE Product ID: APIC at: 0xFEE00000
I/O APIC #2 Version 32 at 0xFEC00000.
Setting APIC routing to physical flat
Processors: 2
Nosave address range: 000000000009d000 - 000000000009e000
Nosave address range: 000000000009e000 - 00000000000a0000
Nosave address range: 00000000000a0000 - 00000000000e4000
Nosave address range: 00000000000e4000 - 0000000000100000
Nosave address range: 00000000cff80000 - 00000000cff8e000
Nosave address range: 00000000cff8e000 - 00000000cffe0000
Nosave address range: 00000000cffe0000 - 00000000d0000000
Nosave address range: 00000000d0000000 - 00000000fee00000
Nosave address range: 00000000fee00000 - 00000000fee01000
Nosave address range: 00000000fee01000 - 00000000fff00000
Nosave address range: 00000000fff00000 - 0000000100000000
Allocating PCI resources starting at d4000000 (gap: d0000000:2ee00000)
SMP: Allowing 4 CPUs, 2 hotplug CPUs
Built 1 zonelists. Total pages: 2064322
Kernel command line: ro root=LABEL=/1 noapic nolapic all-generic-ide irqpoll rhgb quiet
IDE generic will claim all unknown PCI IDE storage controllers.
Misrouted IRQ fixup and polling support enabled
This may significantly impact system performance
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 32768 bytes)
Console: colour VGA+ 80x25
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
Checking aperture...
PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
Placing software IO TLB between 0x1c3b000 - 0x5c3b000
Memory: 8176248k/9175040k available (2439k kernel code, 211452k reserved, 1234k data, 192k init)
Calibrating delay using timer specific routine.. 4020.23 BogoMIPS (lpj=2010116)
Security Framework v1.0.0 initialized
SELinux: Initializing.
SELinux: Starting in permissive mode
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 1024K
using mwait in idle threads.
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 0
CPU0: Thermal monitoring enabled (TM2)
SMP alternatives: switching to UP code
ACPI: Core revision 20060707
ACPI: setting ELCR to 0200 (from cca8)
Using local APIC timer interrupts.
result 12537372
Detected 12.537 MHz APIC timer.
SMP alternatives: switching to SMP code
Booting processor 1/2 APIC 0x1
Initializing CPU#1
Calibrating delay using timer specific routine.. 4011.93 BogoMIPS (lpj=2005966)
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 1024K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
CPU1: Thermal monitoring enabled (TM2)
Intel(R) Pentium(R) Dual CPU E2180 @ 2.00GHz stepping 0d
Brought up 2 CPUs
testing NMI watchdog ... OK.
time.c: Using 14.318180 MHz WALL HPET GTOD HPET/TSC timer.
time.c: Detected 2005.981 MHz processor.
sizeof(vma)=176 bytes
sizeof(page)=56 bytes
sizeof(inode)=560 bytes
sizeof(dentry)=216 bytes
sizeof(ext3inode)=760 bytes
sizeof(buffer_head)=96 bytes
sizeof(skbuff)=240 bytes
migration_cost=13
checking if image is initramfs... it is
Freeing initrd memory: 2243k freed
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: BIOS Bug: MCFG area at e0000000 is not E820-reserved
PCI: Not using MMCONFIG.
PCI: Using configuration type 1
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
Boot video device is 0000:01:00.0
PCI: Transparent bridge - 0000:00:1e.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P2._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P1._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P8._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P9._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.P0P4._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11 12 14 15)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 *5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 11 12 *14 15)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs *3 4 5 6 7 10 11 12 14 15)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 11 12 14 *15)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 *7 10 11 12 14 15)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 15 devices
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report
NetLabel: Initializing
NetLabel: domain hash size = 128
NetLabel: protocols = UNLABELED CIPSOv4
NetLabel: unlabeled traffic allowed by default
hpet0: at MMIO 0xfed00000 (virtual 0xffffffffff5fe000), IRQs 2, 8, 0, 0
hpet0: 4 64-bit timers, 14318180 Hz
PCI-GART: No AMD northbridge found.
pnp: 00:07: ioport range 0x290-0x297 has been reserved
PCI: Bridge: 0000:00:01.0
IO window: d000-dfff
MEM window: fa000000-fe9fffff
PREFETCH window: d0000000-dfffffff
PCI: Bridge: 0000:00:1c.0
IO window: disabled.
MEM window: disabled.
PREFETCH window: f8f00000-f8ffffff
PCI: Bridge: 0000:00:1c.4
IO window: e000-efff
MEM window: feb00000-febfffff
PREFETCH window: disabled.
PCI: Bridge: 0000:00:1c.5
IO window: disabled.
MEM window: fea00000-feafffff
PREFETCH window: disabled.
PCI: Bridge: 0000:00:1e.0
IO window: disabled.
MEM window: disabled.
PREFETCH window: disabled.
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI Interrupt 0000:00:01.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:01.0 to 64
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:1c.0[A] -> Link [LNKB] -> GSI 10 (level, low) -> IRQ 10
PCI: Setting latency timer of device 0000:00:1c.0 to 64
ACPI: PCI Interrupt 0000:00:1c.4[A] -> Link [LNKB] -> GSI 10 (level, low) -> IRQ 10
PCI: Setting latency timer of device 0000:00:1c.4 to 64
ACPI: PCI Interrupt 0000:00:1c.5[B] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:1c.5 to 64
PCI: Setting latency timer of device 0000:00:1e.0 to 64
NET: Registered protocol family 2
IP route cache hash table entries: 262144 (order: 9, 2097152 bytes)
TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 262144 bind 65536)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1205270550.606:1): initialized
Total HugeTLB memory allocated, 0
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
SELinux: Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key F8170EB5CF71EF90
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
PCI: Setting latency timer of device 0000:00:01.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:01.0:pcie00]
PCI: Setting latency timer of device 0000:00:1c.0 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.0:pcie00]
Allocate Port Service[0000:00:1c.0:pcie02]
PCI: Setting latency timer of device 0000:00:1c.4 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.4:pcie00]
Allocate Port Service[0000:00:1c.4:pcie02]
PCI: Setting latency timer of device 0000:00:1c.5 to 64
assign_interrupt_mode Found MSI capability
Allocate Port Service[0000:00:1c.5:pcie00]
Allocate Port Service[0000:00:1c.5:pcie02]
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ AMI] OemTableId [ CPU1PM] [20060707]
ACPI (exconfig-0455): Dynamic SSDT Load - OemId [ AMI] OemTableId [ CPU2PM] [20060707]
ACPI Exception (acpi_processor-0681): AE_NOT_FOUND, Processor Device is not present [20060707]
ACPI: Getting cpuindex for acpiid 0x3
ACPI Exception (acpi_processor-0681): AE_NOT_FOUND, Processor Device is not present [20060707]
ACPI: Getting cpuindex for acpiid 0x4
Real Time Clock Driver v1.12ac
hpet_resources: 0xfed00000 is busy
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
00:0a: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
Unknown: IDE controller at PCI slot 0000:00:1f.2
ACPI: PCI Interrupt Link [LNKG] enabled at IRQ 15
PCI: setting IRQ 15 as level-triggered
ACPI: PCI Interrupt 0000:00:1f.2[B] -> Link [LNKG] -> GSI 15 (level, low) -> IRQ 15
Unknown: chipset revision 2
Unknown: 100% native mode on irq 15
ide0: BM-DMA at 0xa480-0xa487, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xa488-0xa48f, BIOS settings: hdc:pio, hdd:pio
Probing IDE interface ide0...
hda: ST3160815AS, ATA DISK drive
ide0 at 0xb000-0xb007,0xac02 on irq 15
Probing IDE interface ide1...
Unknown: IDE controller at PCI slot 0000:00:1f.5
ACPI: PCI Interrupt 0000:00:1f.5[B] -> Link [LNKG] -> GSI 15 (level, low) -> IRQ 15
Unknown: chipset revision 2
Unknown: 100% native mode on irq 15
ide2: BM-DMA at 0xb480-0xb487, BIOS settings: hde:pio, hdf:pio
ide3: BM-DMA at 0xb488-0xb48f, BIOS settings: hdg:pio, hdh:pio
Probing IDE interface ide2...
Probing IDE interface ide3...
Unknown: IDE controller at PCI slot 0000:03:00.0
ACPI: PCI Interrupt 0000:03:00.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
Unknown: chipset revision 178
Unknown: 100% native mode on irq 11
ide4: BM-DMA at 0xe400-0xe407, BIOS settings: hdi:DMA, hdj:DMA
ide5: BM-DMA at 0xe408-0xe40f, BIOS settings: hdk:DMA, hdl:DMA
Probing IDE interface ide4...
hdj: HL-DT-ST DVD-ROM GDR-H30N, ATAPI CD/DVD-ROM drive
ide4 at 0xec00-0xec07,0xe882 on irq 11
Probing IDE interface ide5...
Probing IDE interface ide1...
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide5...
hda: max request size: 512KiB
irq 15: nobody cared (try booting with the "irqpoll" option)

Call Trace:
<IRQ> [<ffffffff800b703a>] __report_bad_irq+0x30/0x7d
[<ffffffff800b726d>] note_interrupt+0x1e6/0x227
[<ffffffff800b677f>] __do_IRQ+0xc7/0x105
[<ffffffff8006b3bd>] do_IRQ+0xe7/0xf5
[<ffffffff8005c615>] ret_from_intr+0x0/0xa
[<ffffffff80011cba>] __do_softirq+0x53/0xd5
[<ffffffff8005d2fc>] call_softirq+0x1c/0x28
[<ffffffff8006b53a>] do_softirq+0x2c/0x85
[<ffffffff80054f0c>] mwait_idle+0x0/0x4a
[<ffffffff8005cc8e>] apic_timer_interrupt+0x66/0x6c
<EOI> [<ffffffff80054f42>] mwait_idle+0x36/0x4a
[<ffffffff80046fb1>] cpu_idle+0x95/0xb8
[<ffffffff803d3806>] start_kernel+0x220/0x225
[<ffffffff803d3237>] _sinittext+0x237/0x23e

handlers:
[<ffffffff8000d147>] (ide_intr+0x0/0x1df)
Disabling IRQ #15
hda: 312581808 sectors (160041 MB) w/8192KiB Cache, CHS=19457/255/63
hda: cache flushes supported
hda: hda1 hda2 hda3
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
PNP: PS/2 controller doesn't have AUX irq; using default 12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
ACPI: (supports S0 S1 S3 S4 S5)
Freeing unused kernel memory: 192k freed
Write protecting the kernel read-only data: 469k
input: AT Translated Set 2 keyboard as /class/input/input0
USB Universal Host Controller Interface driver v3.0
ACPI: PCI Interrupt 0000:00:1a.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11
PCI: Setting latency timer of device 0000:00:1a.0 to 64
uhci_hcd 0000:00:1a.0: UHCI Host Controller
uhci_hcd 0000:00:1a.0: new USB bus registered, assigned bus number 1
uhci_hcd 0000:00:1a.0: irq 11, io base 0x0000c800
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKF] enabled at IRQ 3
PCI: setting IRQ 3 as level-triggered
ACPI: PCI Interrupt 0000:00:1a.1[B] -> Link [LNKF] -> GSI 3 (level, low) -> IRQ 3
PCI: Setting latency timer of device 0000:00:1a.1 to 64
uhci_hcd 0000:00:1a.1: UHCI Host Controller
uhci_hcd 0000:00:1a.1: new USB bus registered, assigned bus number 2
uhci_hcd 0000:00:1a.1: irq 3, io base 0x0000c880
usb usb2: configuration #1 chosen from 1 choice
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 5
PCI: setting IRQ 5 as level-triggered
ACPI: PCI Interrupt 0000:00:1a.2[C] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5
PCI: Setting latency timer of device 0000:00:1a.2 to 64
uhci_hcd 0000:00:1a.2: UHCI Host Controller
uhci_hcd 0000:00:1a.2: new USB bus registered, assigned bus number 3
uhci_hcd 0000:00:1a.2: irq 5, io base 0x0000cc00
usb usb3: configuration #1 chosen from 1 choice
hub 3-0:1.0: USB hub found
hub 3-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 7
PCI: setting IRQ 7 as level-triggered
ACPI: PCI Interrupt 0000:00:1d.0[A] -> Link [LNKH] -> GSI 7 (level, low) -> IRQ 7
PCI: Setting latency timer of device 0000:00:1d.0 to 64
uhci_hcd 0000:00:1d.0: UHCI Host Controller
uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 4
uhci_hcd 0000:00:1d.0: irq 7, io base 0x0000c080
usb usb4: configuration #1 chosen from 1 choice
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 2 ports detected
ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 14
PCI: setting IRQ 14 as level-triggered
ACPI: PCI Interrupt 0000:00:1d.1[B] -> Link [LNKD] -> GSI 14 (level, low) -> IRQ 14
PCI: Setting latency timer of device 0000:00:1d.1 to 64
uhci_hcd 0000:00:1d.1: UHCI Host Controller
uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 5
uhci_hcd 0000:00:1d.1: irq 14, io base 0x0000c400
usb usb5: configuration #1 chosen from 1 choice
hub 5-0:1.0: USB hub found
hub 5-0:1.0: 2 ports detected
ACPI: PCI Interrupt 0000:00:1d.2[C] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5
PCI: Setting latency timer of device 0000:00:1d.2 to 64
uhci_hcd 0000:00:1d.2: UHCI Host Controller
uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 6
uhci_hcd 0000:00:1d.2: irq 5, io base 0x0000c480
usb usb6: configuration #1 chosen from 1 choice
hub 6-0:1.0: USB hub found
hub 6-0:1.0: 2 ports detected
ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ACPI: PCI Interrupt 0000:00:1a.7[C] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5
PCI: Setting latency timer of device 0000:00:1a.7 to 64
ehci_hcd 0000:00:1a.7: EHCI Host Controller
ehci_hcd 0000:00:1a.7: new USB bus registered, assigned bus number 7
ehci_hcd 0000:00:1a.7: debug port 1
PCI: cache line size of 32 is not supported by device 0000:00:1a.7
ehci_hcd 0000:00:1a.7: irq 5, io mem 0xf9fffc00
ehci_hcd 0000:00:1a.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb7: configuration #1 chosen from 1 choice
hub 7-0:1.0: USB hub found
hub 7-0:1.0: 6 ports detected
ACPI: PCI Interrupt 0000:00:1d.7[A] -> Link [LNKH] -> GSI 7 (level, low) -> IRQ 7
PCI: Setting latency timer of device 0000:00:1d.7 to 64
ehci_hcd 0000:00:1d.7: EHCI Host Controller
ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 8
ehci_hcd 0000:00:1d.7: debug port 1
PCI: cache line size of 32 is not supported by device 0000:00:1d.7
ehci_hcd 0000:00:1d.7: irq 7, io mem 0xf9fff800
ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
usb usb8: configuration #1 chosen from 1 choice
hub 8-0:1.0: USB hub found
hub 8-0:1.0: 6 ports detected
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
audit(1205270565.148:2): enforcing=1 old_enforcing=0 auid=4294967295
security: 3 users, 6 roles, 1660 types, 210 bools, 1 sens, 1024 cats
security: 61 classes, 57758 rules
SELinux: Completing initialization.
SELinux: Setting up existing superblocks.
SELinux: initialized (dev hda1, type ext3), uses xattr
SELinux: initialized (dev usbfs, type usbfs), uses genfs_contexts
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev debugfs, type debugfs), uses genfs_contexts
SELinux: initialized (dev selinuxfs, type selinuxfs), uses genfs_contexts
SELinux: initialized (dev mqueue, type mqueue), uses transition SIDs
SELinux: initialized (dev hugetlbfs, type hugetlbfs), uses genfs_contexts
SELinux: initialized (dev devpts, type devpts), uses transition SIDs
SELinux: initialized (dev eventpollfs, type eventpollfs), uses task SIDs
SELinux: initialized (dev inotifyfs, type inotifyfs), uses genfs_contexts
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
SELinux: initialized (dev futexfs, type futexfs), uses genfs_contexts
SELinux: initialized (dev pipefs, type pipefs), uses task SIDs
SELinux: initialized (dev sockfs, type sockfs), uses task SIDs
SELinux: initialized (dev cpuset, type cpuset), uses genfs_contexts
SELinux: initialized (dev proc, type proc), uses genfs_contexts
SELinux: initialized (dev bdev, type bdev), uses genfs_contexts
SELinux: initialized (dev rootfs, type rootfs), uses genfs_contexts
SELinux: initialized (dev sysfs, type sysfs), uses genfs_contexts
audit(1205270565.347:3): policy loaded auid=4294967295
input: PC Speaker as /class/input/input1
shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
Atheros(R) L1 Ethernet Network Driver - version 1.2.40.2
Copyright (c) 2007 Atheros Corporation.
ACPI: PCI Interrupt 0000:02:00.0[A] -> Link [LNKB] -> GSI 10 (level, low) -> IRQ 10
PCI: Setting latency timer of device 0000:02:00.0 to 64
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
SCSI subsystem initialized
hdj: ATAPI 52X DVD-ROM drive, 198kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
libata version 2.21 loaded.
ACPI: PCI Interrupt 0000:00:1f.3[C] -> Link [LNKC] -> GSI 5 (level, low) -> IRQ 5
ACPI: PCI Interrupt 0000:00:1b.0[A] -> Link [LNKG] -> GSI 15 (level, low) -> IRQ 15
PCI: Setting latency timer of device 0000:00:1b.0 to 64
hda_codec: Unknown model for ALC883, trying auto-probe from BIOS...
lp: driver loaded but no devices found
ACPI: Power Button (FF) [PWRF]
ACPI: Power Button (CM) [PWRB]
ibm_acpi: ec object not found
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised: dm-devel@redhat.com
device-mapper: multipath: version 1.0.5 loaded
EXT3 FS on hda1, internal journal
kjournald starting. Commit interval 5 seconds
EXT3 FS on hda3, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
SELinux: initialized (dev hda3, type ext3), uses xattr
SELinux: initialized (dev tmpfs, type tmpfs), uses transition SIDs
Adding 8193140k swap on /dev/hda2. Priority:-1 extents:1 across:8193140k
SELinux: initialized (dev binfmt_misc, type binfmt_misc), uses genfs_contexts
IA-32 Microcode Update Driver: v1.14a <tigran@veritas.com>
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
ip6_tables: (C) 2000-2006 Netfilter Core Team
ip_tables: (C) 2000-2006 Netfilter Core Team
Netfilter messages via NETLINK v0.30.
ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per conntrack
ADDRCONF(NETDEV_UP): eth0: link is not ready
ATL1: eth0 NIC Link is Up<100 Mbps Full Duplex>
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
ATL1: eth0 NIC Link is Down
ATL1: eth0 NIC Link is Up<100 Mbps Full Duplex>
ATL1: eth0 NIC Link is Down
ATL1: eth0 NIC Link is Up<100 Mbps Full Duplex>
ATL1: eth0 NIC Link is Down
eth0: no IPv6 routers present
ATL1: eth0 NIC Link is Up<10 Mbps Full Duplex>
SELinux: initialized (dev rpc_pipefs, type rpc_pipefs), uses genfs_contexts
Bluetooth: Core ver 2.10
NET: Registered protocol family 31
Bluetooth: HCI device and connection manager initialized
Bluetooth: HCI socket layer initialized
Bluetooth: L2CAP ver 2.8
Bluetooth: L2CAP socket layer initialized
Bluetooth: RFCOMM socket layer initialized
Bluetooth: RFCOMM TTY layer initialized
Bluetooth: RFCOMM ver 1.8
Bluetooth: HIDP (Human Interface Emulation) ver 1.1
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
SELinux: initialized (dev autofs, type autofs), uses genfs_contexts
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.
hdj: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request.

Yuck! What a mess (the /var/log/messages file)!!

As a suggestion install the plus kernel

yum install kernel-2.6.18-53.1.14.el5.centos.plus --disablerepo=\* --enablerepo=centosplus
(check your /etc/yum.repos.d/CentOS-Base.repo file for the correct name of the plus repo first)

Then try booting with your options in place.

Also try booting with the options irqpoll iommu=off, you will likely get an error about the swap partition [ Unable to access resume device (LABEL=SWAP-hda2) ] which is expected as the partitioning may switch to sda