On 2012-11-19 17:41, Alan Stern wrote:
>> How to proceed next?
>
> Firstly, what does /proc/interrupts say?
# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 39 0 0 0 IO-APIC-edge timer
1: 716 721 730 687 IO-APIC-edge i8042
4: 1631 1603 1713 1914 IO-APIC-edge serial
9: 0 0 0 0 IO-APIC-fasteoi acpi
16: 427 437 443 447 IO-APIC-fasteoi
snd_hda_intel
17: 0 0 3 1 IO-APIC-fasteoi
ehci_hcd:usb4, ehci_hcd:usb5
18: 100443 100710 103881 116011 IO-APIC-fasteoi
ohci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3
20: 8049 8235 8456 9657 IO-APIC-fasteoi serial
40: 0 0 0 0 PCI-MSI-edge AMD-Vi
43: 47534 47847 49501 52187 PCI-MSI-edge ahci
44: 118811 119571 123111 134412 PCI-MSI-edge eth0
45: 0 0 0 0 PCI-MSI-edge
xhci_hcd
46: 0 0 0 0 PCI-MSI-edge
xhci_hcd
47: 0 0 0 0 PCI-MSI-edge
xhci_hcd
48: 0 0 0 0 PCI-MSI-edge
xhci_hcd
49: 0 0 0 0 PCI-MSI-edge
xhci_hcd
50: 0 0 0 0 PCI-MSI-edge
xhci_hcd
51: 0 0 0 0 PCI-MSI-edge
xhci_hcd
52: 0 0 0 0 PCI-MSI-edge
xhci_hcd
53: 0 0 0 0 PCI-MSI-edge
xhci_hcd
54: 0 0 0 0 PCI-MSI-edge
xhci_hcd
55: 0 0 0 0 PCI-MSI-edge
xhci_hcd
56: 33 28 36 28 PCI-MSI-edge
snd_hda_intel
57: 52846 53825 56666 64450 PCI-MSI-edge radeon
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 381988 405614 348070 323872 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance
monitoring interrupts
IWI: 0 0 0 0 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 1166893 1184781 1089048 1016935 Rescheduling interrupts
CAL: 34472 32009 62610 50241 Function call interrupts
TLB: 0 0 0 0 TLB shootdowns
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 8 8 8 8 Machine check polls
ERR: 4
MIS: 0
> Secondly, try building a kernel with the patch below and
> CONFIG_USB_DEBUG enabled. Let's see what the dmesg log says when the
> problem occurs.
Will do!
Udo
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