On Tue, 13 Jul 2010, Leandro Melo de Sales wrote: > > If you return to the older kernel version, do the problems go away? > > > > Yes! > I have noticed many people having the same/similar problem, this is > why I thought kernel developers already know this issue. This sort of problem has been reported by many people. Sometimes it turns out that the USB device doesn't work right, sometimes the USB cable or connection is bad, sometimes the USB hardware on the computer isn't working, and sometimes the problem is caused by a part of the kernel outside the USB stack. Only rarely has it turned out that something was wrong with the USB drivers. > >> What should I have to do to find a solution for my case? This is > >> happening with my laptop. I need to know if this could be a hardware > >> problem, because my laptop is still under guarantee and if it is a > >> hardware problem, I will contact the seller. > >> Please, any suggestion/tip will be greatfully accepted. Thank you! > > > > If you test several USB devices, and they all work on different > > computers but fail on your laptop, then probably there's something > > wrong with the laptop. > > > > I have only a usb mouse plugged, and even when I don't have any device > plugged I got the usb errors. Probably your laptop has a built-in USB camera, or something like that. > >> Kernel version: > >> # uname -a > >> Linux leandro-laptop 2.6.32-23-generic #37-Ubuntu SMP Fri Jun 11 > >> 08:03:28 UTC 2010 x86_64 GNU/Linux > >> > >> Example of dmes output: Let's see a complete dmesg log showing the entire boot-up sequence. > > It's possible that this is caused by bad interrupt routing. What shows > > up in /proc/interrupts? You could try booting with "acpi=off" or > > "pci=noacpi" on the boot command line. > > > > The current output for my /proc/interrupts are: > > CPU0 CPU1 > 0: 659506 727717 IO-APIC-edge timer > 1: 5 13186 IO-APIC-edge i8042 > 4: 29 8 IO-APIC-edge serial > 8: 1 0 IO-APIC-edge rtc0 > 9: 625 4 IO-APIC-fasteoi acpi > 12: 1211 53 IO-APIC-edge i8042 > 16: 1 160 IO-APIC-fasteoi uhci_hcd:usb3 > 18: 113023 1 IO-APIC-fasteoi uhci_hcd:usb8 > 19: 6 125 IO-APIC-fasteoi ehci_hcd:usb1, > uhci_hcd:usb5, uhci_hcd:usb7 > 21: 0 0 IO-APIC-fasteoi uhci_hcd:usb4, mmc0 > 22: 282 1590 IO-APIC-fasteoi yenta, HDA Intel > 23: 307 303 IO-APIC-fasteoi ehci_hcd:usb2, > uhci_hcd:usb6, ohci1394 > 26: 53117 2097 PCI-MSI-edge ahci > 27: 4 2608 PCI-MSI-edge eth0 > 28: 79216 5 PCI-MSI-edge i915 > 29: 120325 128748 PCI-MSI-edge iwlagn > Is it possible to take any conclusion for the content of my /proc/interrupts? Not directly. But maybe if we compare it with /proc/interrupts from the earlier working kernel version, there will be an obvious change. > I tried to boot with "acpi=off" and later with "pci=noacpi" but the > errors continue... What error -110 means? any other clue? -110 means timeout, that is, the computer did not receive a reply from the device after 5 seconds. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
