Hi, I have a problem getting my Linux kernel (2.6.30.5 and 2.6.37) to run on a Lenovo Thinkpad x201i laptop(Intel QM57 chipset) when I enable APIC in the kernel configuration. I get the following errors in dmesg, and USB does not work. pci <some number>: can't find IRQ for PCI INT A: probably buggy MP table ata_piix <some number>: can't find IRQ for PCI INT C: probably buggy MP table ehci_hcd <some number>: can't find IRQ for PCI INT D: probably buggy MP table I'm also getting a lot of these errors: usb 1-1: new high speed device using ehci_hcd and address 2 usb 1-1: device not accepting address 2, error -110 When I either pass the "noapic" kernel option during boot time, or disable APIC in the kernal configuration (CONFIG_X86_UP_APIC), I don't get these errors, and I also see the EHCI controller properly detected in dmesg as follows: usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: EHCI Host Controller usb usb1: Manufacturer: Linux 2.6.30.5 ehci_hcd usb usb1: SerialNumber: 0000:00:1a.0 usb usb1: Configuration #1 chosen from 1 choice usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 usb usb1: Product: EHCI Host Controller usb usb1: Manufacturer: Linux 2.6.30.5 ehci_hcd usb usb1: SerialNumber: 0000:00:1d.0 usb usb1: Configuration #1 chosen from 1 choice So far, this seems to happen only on this particular laptop. While I can get by without APIC, I'm aware this isn't an ideal setup. Is there any way I get get APIC to work on all systems? Perhaps some other kernel configuration settings that needs to be enabled/disabled? Thanks! -- - Goi Sihan goister@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
