Hi there, I use a Gigabyte GA7-VAXP motherboard that has been fine for more than 2 years with 2.4 series kernels, and that gives trouble with 2.6.12 (and previous) kernels.
The problem seems to sit between the UP IO-APIC and USB uhci_hcd driver. The GA7-VAXP MB is equipped with an Athlon 2000+ XP and a VIA KT400 chipset. Using 2.4 series kernel the IO-APIC is used just fine. Was never source of any kind of problem. Using 2.6.12 kernel, if the IO-APIC is enabled in the kernel configuration, then the interrupt controlling the uhci_hcd USB controller gets disabled as soon as uhci_hcd is initialized. This however doesn't happen all the times. I would say that it happens at bootup about 50% of the times. However, if the uhci_hcd happened to initialize OK, then it will work just good until the machine is rebooted. When it fails, I get the following messages in syslog: Jul 9 12:28:06 totor kernel: usbcore: registered new driver usbfs Jul 9 12:28:06 totor kernel: usbcore: registered new driver hub Jul 9 12:28:06 totor kernel: USB Universal Host Controller Interface driver v2.2 Jul 9 12:28:06 totor kernel: PCI: Via IRQ fixup for 0000:00:10.0, from 10 to 5 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.0: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.0: new USB bus registered, assigned bus number 1 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.0: irq 21, io base 0x0000ac00 Jul 9 12:28:06 totor kernel: hub 1-0:1.0: USB hub found Jul 9 12:28:06 totor kernel: hub 1-0:1.0: 2 ports detected Jul 9 12:28:06 totor kernel: PCI: Via IRQ fixup for 0000:00:10.1, from 10 to 5 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.1: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#2) Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.1: new USB bus registered, assigned bus number 2 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.1: irq 21, io base 0x0000b000 Jul 9 12:28:06 totor kernel: hub 2-0:1.0: USB hub found Jul 9 12:28:06 totor kernel: hub 2-0:1.0: 2 ports detected Jul 9 12:28:06 totor kernel: PCI: Via IRQ fixup for 0000:00:10.2, from 10 to 5 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.2: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (#3) Jul 9 12:28:06 totor kernel: usb 1-1: new low speed USB device using uhci_hcd and address 2 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.2: new USB bus registered, assigned bus number 3 Jul 9 12:28:06 totor kernel: uhci_hcd 0000:00:10.2: irq 21, io base 0x0000b400 Jul 9 12:28:06 totor kernel: hub 3-0:1.0: USB hub found Jul 9 12:28:06 totor kernel: hub 3-0:1.0: 2 ports detected Jul 9 12:28:06 totor kernel: PCI: Via IRQ fixup for 0000:00:10.3, from 11 to 3 Jul 9 12:28:06 totor kernel: ehci_hcd 0000:00:10.3: VIA Technologies, Inc. USB 2.0 Jul 9 12:28:06 totor kernel: ehci_hcd 0000:00:10.3: new USB bus registered, assigned bus number 4 Jul 9 12:28:06 totor kernel: ehci_hcd 0000:00:10.3: irq 19, io mem 0xe3006000 Jul 9 12:28:06 totor kernel: ehci_hcd 0000:00:10.3: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 Jul 9 12:28:06 totor kernel: usbcore: registered new driver hiddev Jul 9 12:28:06 totor kernel: hub 4-0:1.0: USB hub found Jul 9 12:28:06 totor kernel: hub 4-0:1.0: 6 ports detected Jul 9 12:28:06 totor kernel: usbhid: probe of 1-1:1.0 failed with error -5 Jul 9 12:28:06 totor kernel: usbcore: registered new driver usbhid Jul 9 12:28:06 totor kernel: drivers/usb/input/hid-core.c: v2.01:USB HID core driver Jul 9 12:28:06 totor kernel: usb 1-1: USB disconnect, address 2 Jul 9 12:28:06 totor kernel: irq 21: nobody cared! Jul 9 12:28:06 totor kernel: [__report_bad_irq+42/144] __report_bad_irq+0x2a/0x90 Jul 9 12:28:06 totor kernel: [<c0136e5a>] __report_bad_irq+0x2a/0x90 Jul 9 12:28:06 totor kernel: [handle_IRQ_event+57/112] handle_IRQ_event+0x39/0x70 Jul 9 12:28:06 totor kernel: [<c01368f9>] handle_IRQ_event+0x39/0x70 Jul 9 12:28:06 totor kernel: [note_interrupt+163/208] note_interrupt+0xa3/0xd0 Jul 9 12:28:06 totor kernel: [<c0136f83>] note_interrupt+0xa3/0xd0 Jul 9 12:28:06 totor kernel: [__do_IRQ+240/256] __do_IRQ+0xf0/0x100 Jul 9 12:28:06 totor kernel: [<c0136a20>] __do_IRQ+0xf0/0x100 Jul 9 12:28:06 totor kernel: [do_IRQ+54/112] do_IRQ+0x36/0x70 Jul 9 12:28:06 totor kernel: [<c01050e6>] do_IRQ+0x36/0x70 Jul 9 12:28:06 totor kernel: [common_interrupt+26/32] common_interrupt+0x1a/0x20 Jul 9 12:28:06 totor kernel: [<c0103526>] common_interrupt+0x1a/0x20 Jul 9 12:28:06 totor kernel: handlers: Jul 9 12:28:06 totor kernel: [pg0+947137696/1069564928] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: [<f8b3cca0>] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: [pg0+947137696/1069564928] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: [<f8b3cca0>] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: [pg0+947137696/1069564928] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: [<f8b3cca0>] (usb_hcd_irq+0x0/0x90 [usbcore]) Jul 9 12:28:06 totor kernel: Disabling IRQ #21 Jul 9 12:28:06 totor kernel: usb 1-1: new low speed USB device using uhci_hcd and address 3 Jul 9 12:28:06 totor kernel: input: USB HID v1.10 Mouse [Logitech USB Receiver] on usb-0000:00:10.0-1 Jul 9 12:28:06 totor kernel: usb 3-2: new full speed USB device using uhci_hcd and address 2 Starting there, USB devices cause trouble -- including my mouse that responds very slowly and erratically, probably because its interrupt got disabled ? If the kernel is compiled without support for UP IO-APIC (CONFIG_X86_UP_IOAPIC), or booted with the "noapic" option, then this trouble doesn't happen -- but the system doesn't use its IO-APIC, which is annoying. Here follows other syslog boot messages that may be relevant to this IRQ problem. Any clue ? N.B.: I'm not subscribed to the Linux-kernel ML. Please copy me on answers. TIA, cheers. Jul 9 12:28:06 totor kernel: Linux version 2.6.12-3mib4v ([EMAIL PROTECTED]) (gcc version 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)) #6 Sat Jul 9 12:16:43 CEST 2005 Jul 9 12:28:06 totor kernel: BIOS-provided physical RAM map: Jul 9 12:28:06 totor kernel: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) Jul 9 12:28:06 totor kernel: BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) Jul 9 12:28:06 totor kernel: BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) Jul 9 12:28:06 totor kernel: BIOS-e820: 0000000000100000 - 000000003fff0000 (usable) Jul 9 12:28:06 totor kernel: BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS) Jul 9 12:28:06 totor kernel: BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data) Jul 9 12:28:06 totor kernel: BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved) Jul 9 12:28:06 totor kernel: BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) Jul 9 12:28:06 totor kernel: BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved) Jul 9 12:28:06 totor kernel: 127MB HIGHMEM available. Jul 9 12:28:06 totor kernel: 896MB LOWMEM available. Jul 9 12:28:06 totor kernel: found SMP MP-table at 000f4c50 Jul 9 12:28:06 totor kernel: DMI 2.3 present. Jul 9 12:28:06 totor kernel: Intel MultiProcessor Specification v1.4 Jul 9 12:28:06 totor kernel: Virtual Wire compatibility mode. Jul 9 12:28:06 totor kernel: OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000 Jul 9 12:28:06 totor kernel: Processor #0 6:6 APIC version 17 Jul 9 12:28:06 totor kernel: I/O APIC #2 Version 17 at 0xFEC00000. Jul 9 12:28:06 totor kernel: Enabling APIC mode: Flat. Using 1 I/O APICs Jul 9 12:28:06 totor kernel: Processors: 1 Jul 9 12:28:06 totor kernel: Allocating PCI resources starting at 40000000 (gap: 40000000:bec00000) Jul 9 12:28:06 totor kernel: Built 1 zonelists Jul 9 12:28:06 totor kernel: Initializing CPU#0 Jul 9 12:28:06 totor kernel: Kernel command line: root=/dev/evms/lv_racine ro devfs=nomount noquiet vga=791 Jul 9 12:28:06 totor kernel: PID hash table entries: 4096 (order: 12, 65536 bytes) Jul 9 12:28:06 totor kernel: Detected 1674.892 MHz processor. Jul 9 12:28:06 totor kernel: Using tsc for high-res timesource Jul 9 12:28:06 totor kernel: Console: colour dummy device 80x25 Jul 9 12:28:06 totor kernel: Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Jul 9 12:28:06 totor kernel: Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Jul 9 12:28:06 totor kernel: Memory: 1032408k/1048512k available (1820k kernel code, 15220k reserved, 740k data, 196k init, 131008k highmem, 0k BadRAM) Jul 9 12:28:06 totor kernel: Checking if this processor honours the WP bit even in supervisor mode... Ok. Jul 9 12:28:06 totor kernel: Security Framework v1.0.0 initialized Jul 9 12:28:06 totor kernel: Capability LSM initialized Jul 9 12:28:06 totor kernel: Mount-cache hash table entries: 512 Jul 9 12:28:06 totor kernel: CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) Jul 9 12:28:06 totor kernel: CPU: L2 Cache: 256K (64 bytes/line) Jul 9 12:28:06 totor kernel: Intel machine check architecture supported. Jul 9 12:28:06 totor kernel: Intel machine check reporting enabled on CPU#0. Jul 9 12:28:06 totor kernel: CPU: AMD Athlon(tm) XP 2000+ stepping 02 Jul 9 12:28:06 totor kernel: Enabling fast FPU save and restore... done. Jul 9 12:28:06 totor kernel: Enabling unmasked SIMD FPU exception support... done. Jul 9 12:28:06 totor kernel: Checking 'hlt' instruction... OK. Jul 9 12:28:06 totor kernel: ENABLING IO-APIC IRQs Jul 9 12:28:06 totor kernel: ..TIMER: vector=0x31 pin1=2 pin2=0 Jul 9 12:28:06 totor kernel: checking if image is initramfs...it isn't (no cpio magic); looks like an initrd Jul 9 12:28:06 totor kernel: Freeing initrd memory: 3097k freed Jul 9 12:28:06 totor kernel: NET: Registered protocol family 16 Jul 9 12:28:06 totor kernel: PCI: PCI BIOS revision 2.10 entry at 0xf9ea0, last bus=1 Jul 9 12:28:06 totor kernel: PCI: Using configuration type 1 Jul 9 12:28:06 totor kernel: mtrr: v2.0 (20020519) Jul 9 12:28:06 totor kernel: Linux Plug and Play Support v0.97 (c) Adam Belay Jul 9 12:28:06 totor kernel: PnPBIOS: Disabled Jul 9 12:28:06 totor kernel: PCI: Probing PCI hardware Jul 9 12:28:06 totor kernel: PCI: Probing PCI hardware (bus 00) Jul 9 12:28:06 totor kernel: PCI: Using IRQ router default [1106/3189] at 0000:00:00.0 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:0a.0[A] -> IRQ 18 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:0b.0[A] -> IRQ 19 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:0f.0[A] -> IRQ 19 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:10.0[A] -> IRQ 21 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:10.1[B] -> IRQ 21 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:10.2[C] -> IRQ 21 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:10.3[D] -> IRQ 19 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:11.1[A] -> IRQ 22 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:11.5[C] -> IRQ 22 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:00:13.0[A] -> IRQ 18 Jul 9 12:28:06 totor kernel: PCI->APIC IRQ transform: 0000:01:00.0[A] -> IRQ 16 Jul 9 12:28:06 totor kernel: Machine check exception polling timer started. Jul 9 12:28:06 totor kernel: apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16ac) Jul 9 12:28:06 totor kernel: audit: initializing netlink socket (disabled) Jul 9 12:28:06 totor kernel: audit(1120904798.619:0): initialized Jul 9 12:28:06 totor kernel: highmem bounce pool size: 64 pages Jul 9 12:28:06 totor kernel: inotify device minor=63 [...] -- Michel Bouissou <[EMAIL PROTECTED]> OpenPGP ID 0xDDE8AC6E - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
