Re: USB mouse and keyboard disconnected
On Thu, Nov 03, 2016 at 06:18:59PM +0200, Martin T wrote:
> Hi,
>
> looks like the problem is either with ehci_pci or ehci_hcd because if
> I do "modprobe -rv ehci_pci" and "modprobe -v ehci_pci", then both
> keyboard and mouse start to work. "ehci_hcd" is used by "ehci_pci":
>
> ehci_pci 12512 0
> ehci_hcd 69837 1 ehci_pci
>
>
Random thought -- if ehci_pci is already loaded for some other device
early in the boot process, in a way that doesn't require the ehci_hcd
module, and then udev detects the keyboard and mouse, determines it
needs ehci_pci... and concludes all is well because that module is
already loaded... But the ehci_hcd piece isn't.... And then removing it
and re-loading it looks at the dependencies again in the light of all
the hardware udev is aware of by that stage, and so loads the
sub-module, and the keyboard and mouse start working...
OR, perhaps less far-fetched, could your running kernel somehow have
access to 2 versions of the ehci_pci module, one with a dependency on
ehci_hcd and one not? And at boot it is picking up the wrong one and
when you run modprobe from the command line it is picking up the other?
Mark
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