I'm getting this error myself while using the irqpoll option on a Breezy kernel 2.6.12-10-386. I started using the irqpoll option after a BIOS upgrade in which all my BIOS options went back to default. Upon booting up I was hit with another issue, which was a repeating 'drum beat' sound at the gdm login screen. I noticed a lot of irq related issues in the logs, so I fiddled around with pci=routeirq, noapic, nolapic, acpi=off and whatever kernel options I could think of, eventually finding the irqpoll was the only one that would get me to gdm login without getting stuck with this infinitely repeating 'drum beat' noise. Since using irqpoll, I have started noticing this 'hdc: cdrom_pc_intr: The drive appears confused (ireason = 0x01)' error and have had problems with the machine hanging when attempting to read a CD, and various writing issues when burning ISO's. My hardware is below.. description: Desktop Computer product: Uknown vendor: SOLTEK version: 1.0 serial: 00000000 width: 32 bits capabilities: smbios-2.3 dmi-2.3 configuration: chassis=desktop *-core description: Motherboard product: Uknown vendor: SOLTEK physical id: 0 version: 1.0 serial: 00000000 slot: PCI2 *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: Version 07.00T (04/02/01) size: 64KB capacity: 192KB capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int17printer int10video acpi usb agp ls120boot zipboot biosbootspecification *-cpu description: CPU product: AMD Athlon(tm) XP 2200+ vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: cpu@0 version: 6.8.0 slot: Socket-A size: 1800MHz capacity: 3GHz width: 32 bits clock: 133MHz capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow *-cache:0 description: L1 cache physical id: 5 slot: Internal Cache size: 128KB capacity: 1MB capabilities: synchronous internal write-back unified *-cache:1 description: L2 cache physical id: 6 slot: Internal Cache size: 256KB capacity: 1MB capabilities: synchronous internal write-back unified *-memory description: System memory physical id: 1 size: 511MB *-pci description: Host bridge product: VT8377 [KT400/KT600 AGP] Host Bridge vendor: VIA Technologies, Inc. physical id: e0000000 bus info: pci@00:00.0 version: 00 width: 32 bits clock: 66MHz resources: iomemory:e0000000-e3ffffff *-pci description: PCI bridge product: VT8235 PCI Bridge vendor: VIA Technologies, Inc. physical id: 1 bus info: pci@00:01.0 version: 00 width: 32 bits clock: 66MHz capabilities: pci normal_decode bus_master cap_list *-display description: VGA compatible controller product: NV34 [GeForce FX 5200] vendor: nVidia Corporation physical id: 0 bus info: pci@01:00.0 version: a1 size: 128MB width: 32 bits clock: 66MHz capabilities: vga bus_master cap_list configuration: driver=nvidia resources: iomemory:de000000-deffffff iomemory:d0000000-d7ffffff irq:16 *-multimedia description: Multimedia audio controller product: 5880 AudioPCI vendor: Ensoniq physical id: a bus info: pci@00:0a.0 version: 02 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=ENS1371 resources: ioport:ec00-ec3f irq:18 *-usb:0 description: USB Controller product: VT82xxxxx UHCI USB 1.1 Controller vendor: VIA Technologies, Inc. physical id: 10 bus info: pci@00:10.0 version: 80 width: 32 bits clock: 33MHz capabilities: uhci bus_master cap_list configuration: driver=uhci_hcd resources: ioport:e800-e81f irq:21 *-usbhost product: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller vendor: Linux 2.6.12-10-386 uhci_hcd physical id: 1 bus info: usb@1 logical name: usb1 version: 2.06 capabilities: usb-1.10 configuration: driver=hub maxpower=0mA slots=2 speed=12.0MB/s *-usb description: Mouse product: USB-PS/2 Optical Mouse vendor: B16_b_02 physical id: 2 bus info: usb@1:2 version: 98.02 capabilities: usb-2.00 configuration: driver=usbhid maxpower=98mA speed=1.5MB/s *-usb:1 description: USB Controller product: USB 2.0 vendor: VIA Technologies, Inc. physical id: 10.3 bus info: pci@00:10.3 version: 82 width: 32 bits clock: 33MHz capabilities: ehci bus_master cap_list configuration: driver=ehci_hcd resources: iomemory:dfffff00-dfffffff irq:21 *-usbhost product: VIA Technologies, Inc. USB 2.0 vendor: Linux 2.6.12-10-386 ehci_hcd physical id: 1 bus info: usb@2 logical name: usb2 version: 2.06 capabilities: usb-2.00 configuration: driver=hub maxpower=0mA slots=2 speed=480.0MB/s *-usb description: Mass storage device product: USB TO IDE vendor: Genesys Logic, Inc. physical id: 1 bus info: usb@2:1 logical name: scsi0 version: 0.33 capabilities: usb-2.00 scsi emulated scsi-host configuration: driver=usb-storage maxpower=96mA speed=480.0MB/s *-disk description: SCSI Disk product: DK14FA-20 vendor: HITACHI_ physical id: 0.0.0 bus info: scsi@0.0:0.0 logical name: /dev/sda version: 0811 size: 18GB *-isa UNCLAIMED description: ISA bridge product: VT8235 ISA Bridge vendor: VIA Technologies, Inc. physical id: 11 bus info: pci@00:11.0 version: 00 width: 32 bits clock: 33MHz capabilities: isa bus_master cap_list *-ide description: IDE interface product: VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE vendor: VIA Technologies, Inc. physical id: 11.1 bus info: pci@00:11.1 version: 06 width: 32 bits clock: 33MHz capabilities: ide bus_master cap_list configuration: driver=VIA_IDE resources: ioport:fc00-fc0f irq:255 *-ide:0 description: IDE Channel 0 physical id: 0 bus info: ide@0 logical name: ide0 clock: 33MHz *-disk:0 description: ATA Disk product: ST380011A vendor: Seagate physical id: 0 bus info: ide@0.0 logical name: /dev/hda version: 8.01 serial: 5JVTH6B9 size: 74GB capacity: 74GB capabilities: ata dma lba iordy smart security pm configuration: mode=udma5 smart=on *-disk:1 description: ATA Disk product: ST3802110A vendor: Seagate physical id: 1 bus info: ide@0.1 logical name: /dev/hdb version: 3.AAE serial: 4LR0N15G size: 74GB capacity: 74GB capabilities: ata dma lba iordy smart security pm configuration: mode=udma5 smart=on *-ide:1 description: IDE Channel 1 physical id: 1 bus info: ide@1 logical name: ide1 clock: 33MHz *-cdrom description: DVD writer product: LITE-ON DVDRW SOHW-1693S physical id: 0 bus info: ide@1.0 logical name: /dev/hdc version: KS04 capabilities: packet atapi cdrom removable nonmagnetic dma lba iordy audio cd-r cd-rw dvd dvd-r