Is the problem really that CONFIG_PARPORT_PC_FIFO wasn't set to N, or is it actually that there's a bug in the kernel that only shows up when CONFIG_PARPORT_PC_FIFO isn't set to Y (or possibly buggy hardware)?
I have been unable to print without severe errors (http://lists.debian.org/debian-user/2006/10/msg00300.html) since I upgraded to Sarge and to kernel 2.6.8 (2.6.8-2-k7-smp, which has CONFIG_PARPORT_PC_FIFO set to Y. Here's my system's lshw information: dsb description: Tower Computer product: System Name vendor: System Manufacturer version: System Version serial: SYS-1234567890 width: 32 bits capabilities: smbios-2.3 dmi-2.3 configuration: boot=normal chassis=tower *-core description: Motherboard product: A7M266-D vendor: ASUSTeK Computer INC. physical id: 0 version: REV 1.xx serial: xxxxxxxxxxx *-firmware description: BIOS vendor: Award Software, Inc. physical id: 0 version: ASUS A7M266-D ACPI BIOS Revision 1010 (03/03/2003) size: 64KB capacity: 192KB capabilities: pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb agp *-cpu:0 description: CPU product: AMD Athlon(TM) XP vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: [EMAIL PROTECTED] version: 6.6.2 slot: SOCKET A size: 1200MHz capacity: 1600MHz 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 mp mmxext 3dnowext 3dnow *-cache:0 description: L1 cache physical id: b slot: L1 Cache size: 128KB capacity: 128KB capabilities: synchronous internal write-back data *-cache:1 description: L2 cache physical id: c slot: L2 Cache size: 256KB capacity: 8MB capabilities: pipeline-burst synchronous internal write-back data *-cpu:1 description: CPU product: AMD Athlon(TM) XP vendor: Advanced Micro Devices [AMD] physical id: 5 bus info: [EMAIL PROTECTED] version: 6.6.2 slot: SOCKET A size: 1200MHz capacity: 1600MHz 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 mp mmxext 3dnowext 3dnow *-cache:0 description: L1 cache physical id: 0 size: 128KB *-cache:1 description: L2 cache physical id: 1 size: 256KB *-memory description: System Memory physical id: 25 slot: System board or motherboard size: 1GB capacity: 1GB *-bank:0 description: DIMM DRAM Synchronous physical id: 0 slot: DIMM 1 size: 512MB width: 64 bits *-bank:1 description: DIMM DRAM Synchronous physical id: 1 slot: DIMM 2 size: 512MB width: 64 bits *-bank:2 description: DIMM DRAM Synchronous [empty] physical id: 2 slot: DIMM 3 *-bank:3 description: DIMM DRAM Synchronous [empty] physical id: 3 slot: DIMM 4 *-pci description: Host bridge product: AMD-760 MP [IGD4-2P] System Controller vendor: Advanced Micro Devices [AMD] physical id: fc000000 bus info: [EMAIL PROTECTED]:00.0 version: 11 width: 32 bits clock: 66MHz resources: iomemory:fc000000-fdffffff iomemory:fb800000-fb800fff *-pci:0 description: PCI bridge product: AMD-760 MP [IGD4-2P] AGP Bridge vendor: Advanced Micro Devices [AMD] physical id: 1 bus info: [EMAIL PROTECTED]:01.0 version: 00 width: 32 bits clock: 66MHz capabilities: pci normal_decode bus_master *-display description: VGA compatible controller product: Riva128 vendor: NVidia / SGS Thomson (Joint Venture) physical id: 5 bus info: [EMAIL PROTECTED]:05.0 version: 10 size: 16MB width: 32 bits clock: 66MHz capabilities: vga bus_master cap_list resources: iomemory:f8000000-f8ffffff iomemory:fa000000-faffffff irq:177 *-isa UNCLAIMED description: ISA bridge product: AMD-768 [Opus] ISA vendor: Advanced Micro Devices [AMD] physical id: 7 bus info: [EMAIL PROTECTED]:07.0 version: 05 width: 32 bits clock: 66MHz capabilities: isa bus_master *-ide description: IDE interface product: AMD-768 [Opus] IDE vendor: Advanced Micro Devices [AMD] physical id: 7.1 bus info: [EMAIL PROTECTED]:07.1 version: 04 width: 32 bits clock: 33MHz capabilities: ide bus_master configuration: driver=AMD IDE resources: ioport:d800-d80f *-ide:0 description: IDE Channel 0 physical id: 0 bus info: [EMAIL PROTECTED] logical name: ide0 clock: 33MHz *-disk:0 description: ATA Disk product: Maxtor 6Y160P0 vendor: Maxtor physical id: 0 bus info: [EMAIL PROTECTED] logical name: /dev/hda version: YAR41BW0 serial: Y43M1TSE size: 152GB capabilities: ata dma lba iordy smart security pm apm configuration: apm=off mode=udma5 smart=on *-disk:1 description: ATA Disk product: Maxtor 91024U4 vendor: Maxtor physical id: 1 bus info: [EMAIL PROTECTED] logical name: /dev/hdb version: VA510PF0 serial: W40JHZ8A size: 9765MB capacity: 9765MB capabilities: ata dma lba iordy smart pm apm configuration: apm=off smart=on *-ide:1 description: IDE Channel 1 physical id: 1 bus info: [EMAIL PROTECTED] logical name: ide1 clock: 33MHz *-cdrom description: CD-R/CD-RW writer product: OPTORITECD-RW CW5205 physical id: 0 bus info: [EMAIL PROTECTED] logical name: /dev/hdc version: 180E capabilities: packet atapi cdrom removable nonmagnetic dma lba iordy audio cd-r cd-rw configuration: mode=udma2 *-bridge UNCLAIMED description: Bridge product: AMD-768 [Opus] ACPI vendor: Advanced Micro Devices [AMD] physical id: 7.3 bus info: [EMAIL PROTECTED]:07.3 version: 03 width: 32 bits clock: 33MHz capabilities: bridge *-storage description: Unknown mass storage controller product: PDC20268 (Ultra100 TX2) vendor: Promise Technology, Inc. physical id: 8 bus info: [EMAIL PROTECTED]:08.0 version: 02 width: 32 bits clock: 66MHz capabilities: storage bus_master cap_list configuration: driver=Promise IDE resources: ioport:d400-d407 ioport:d000-d003 ioport:b800-b807 ioport:b400-b403 ioport:b000-b00f iomemory:f7800000-f7803fff irq:169 *-ide:0 description: IDE Channel 0 physical id: 2 bus info: [EMAIL PROTECTED] logical name: ide2 clock: 66MHz *-disk description: ATA Disk product: WDC WD2500JB-00GVC0 vendor: Western Digital physical id: 0 bus info: [EMAIL PROTECTED] logical name: /dev/hde version: 08.02D08 serial: WD-WCAL74404181 size: 232GB capabilities: ata dma lba iordy smart security pm configuration: smart=on *-ide:1 description: IDE Channel 1 physical id: 3 bus info: [EMAIL PROTECTED] logical name: ide3 clock: 66MHz *-disk description: ATA Disk product: Maxtor 54610H6 vendor: Maxtor physical id: 0 bus info: [EMAIL PROTECTED] logical name: /dev/hdg version: JAC61HU0 serial: F604G5CC size: 42GB capacity: 42GB capabilities: ata dma lba iordy smart pm apm configuration: apm=off smart=on *-pci:1 description: PCI bridge product: AMD-768 [Opus] PCI vendor: Advanced Micro Devices [AMD] physical id: 10 bus info: [EMAIL PROTECTED]:10.0 version: 05 width: 32 bits clock: 66MHz capabilities: pci normal_decode bus_master *-usb:0 description: USB Controller product: AMD-768 [Opus] USB vendor: Advanced Micro Devices [AMD] physical id: 0 bus info: [EMAIL PROTECTED]:00.0 version: 07 width: 32 bits clock: 33MHz capabilities: ohci bus_master configuration: driver=ohci_hcd resources: iomemory:f7000000-f7000fff irq:185 *-usbhost product: Advanced Micro Devices [AMD] AMD-768 [Opus] USB vendor: Linux 2.6.8-2-k7-smp ohci_hcd physical id: 1 bus info: [EMAIL PROTECTED] logical name: usb1 version: 2.06 capabilities: usb-1.10 configuration: driver=hub maxpower=0mA slots=4 speed=12.0MB/s *-multimedia description: Multimedia audio controller product: CM8738 vendor: C-Media Electronics Inc physical id: 4 bus info: [EMAIL PROTECTED]:04.0 version: 10 width: 32 bits clock: 33MHz capabilities: bus_master cap_list configuration: driver=C-Media PCI resources: ioport:a800-a8ff irq:193 *-usb:1 description: USB Controller product: USB vendor: NEC Corporation physical id: 5 bus info: [EMAIL PROTECTED]:05.0 version: 43 width: 32 bits clock: 33MHz capabilities: ohci bus_master cap_list configuration: driver=ohci_hcd resources: iomemory:f6800000-f6800fff irq:201 *-usbhost product: NEC Corporation USB vendor: Linux 2.6.8-2-k7-smp ohci_hcd physical id: 1 bus info: [EMAIL PROTECTED] logical name: usb2 version: 2.06 capabilities: usb-1.10 configuration: driver=hub maxpower=0mA slots=3 speed=12.0MB/s *-usb description: Printer product: USB Printer vendor: EPSON physical id: 1 bus info: [EMAIL PROTECTED]:1 version: 1.00 serial: L11P10505190238260 capabilities: usb-1.10 bidirectional configuration: driver=usblp maxpower=2mA speed=12.0MB/s *-usb:2 description: USB Controller product: USB vendor: NEC Corporation physical id: 5.1 bus info: [EMAIL PROTECTED]:05.1 version: 43 width: 32 bits clock: 33MHz capabilities: ohci bus_master cap_list configuration: driver=ohci_hcd resources: iomemory:f6000000-f6000fff irq:185 *-usbhost product: NEC Corporation USB (#2) vendor: Linux 2.6.8-2-k7-smp ohci_hcd physical id: 1 bus info: [EMAIL PROTECTED] logical name: usb3 version: 2.06 capabilities: usb-1.10 configuration: driver=hub maxpower=0mA slots=2 speed=12.0MB/s *-usb:3 description: USB Controller product: USB 2.0 vendor: NEC Corporation physical id: 5.2 bus info: [EMAIL PROTECTED]:05.2 version: 04 width: 32 bits clock: 33MHz capabilities: ehci bus_master cap_list configuration: driver=ehci_hcd resources: iomemory:f5800000-f58000ff irq:177 *-usbhost product: NEC Corporation USB 2.0 vendor: Linux 2.6.8-2-k7-smp ehci_hcd physical id: 1 bus info: [EMAIL PROTECTED] logical name: usb4 version: 2.06 capabilities: usb-2.00 configuration: driver=hub maxpower=0mA slots=5 speed=480.0MB/s *-scsi description: SCSI storage controller product: 53c875 vendor: LSI Logic / Symbios Logic physical id: 6 bus info: [EMAIL PROTECTED]:06.0 version: 26 width: 32 bits clock: 33MHz capabilities: scsi bus_master cap_list configuration: driver=sym53c8xx resources: ioport:a400-a4ff iomemory:f5000000-f50000ff iomemory:f4800000-f4800fff irq:193 *-network description: Ethernet interface product: 3c905C-TX/TX-M [Tornado] vendor: 3Com Corporation physical id: 8 bus info: [EMAIL PROTECTED]:08.0 logical name: eth0 version: 78 serial: 00:e0:18:d8:78:f4 width: 32 bits clock: 33MHz capabilities: bus_master cap_list ethernet physical configuration: broadcast=yes driver=3c59x driverversion=LK1.1.19 ip=192.168.2.1 multicast=yes resources: ioport:a000-a07f iomemory:f4000000-f400007f irq:185 *-scsi physical id: 1 bus info: [EMAIL PROTECTED] logical name: scsi1 capabilities: scsi-host configuration: driver=sym53c8xx 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