On Fri, Feb 22, 2013 at 10:51:58PM +0100, Fabio Baltieri wrote: > On Fri, Feb 22, 2013 at 03:59:54AM -0500, Dave Jones wrote: > > On Thu, Feb 21, 2013 at 10:40:10AM -0800, Greg KH wrote: > > > > It looks like every port on my laptop is powered down, as I can't > > even charge devices with it. > > I have the same problem (and almost the same laptop, Thinkpad T430 > here), all external USB ports without power - even the always-on one > :-). > > The bug seems to be ACPI related, I bisected it down to this patch: > > f95988d ACPI / scan: Treat power resources in a special way > > In the dmesg I have some error like these: > > ACPI: Power Resource [PUBS] (on) > ... > pci 0000:00:14.0: System wakeup disabled by ACPI > > for the USB controllers in the broken kernel, there are some in your > dmesg too. I'll try to come up with a fix for current mainline, but all > the acpi stuff is quite obscure to me and the patch does not revert > cleanly, maybe Rafael (in CC) has some idea! Good find. I see the same thing. [ 0.930283] ACPI _OSC control for PCIe not granted, disabling ASPM [ 0.933527] pci 0000:00:14.0: System wakeup disabled by ACPI [ 0.935982] pci 0000:00:19.0: System wakeup disabled by ACPI [ 0.937898] pci 0000:00:1a.0: System wakeup disabled by ACPI [ 0.939835] pci 0000:00:1b.0: System wakeup disabled by ACPI [ 0.940700] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP1._PRT] [ 0.942195] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP2._PRT] [ 0.943737] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP3._PRT] [ 0.944564] pci 0000:00:1c.2: System wakeup disabled by ACPI [ 0.966491] pci 0000:00:1d.0: System wakeup disabled by ACPI I must have pulled in the acpi bits the same time as the usb pull, because I don't recall seeing this problem before last night. Dave -- 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
