Re: XHCI port shutting down on new laptop while on battery power

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On Thu, Jan 12, 2023 at 05:18:29PM +0100, Oliver Neukum wrote:
> Hi,
> 
> this is my new laptop and I am fishing for ideas.

> [  417.961840] xhci_hcd 0000:06:00.3: PME# enabled
> [  417.961853] xhci_hcd 0000:06:00.3: Requested to go to 0
> 
> _That_ I do not understand
> 
> I can trigger the same effect by putting a connected mouse (usbhid) into
> autosuspend while and only while the laptop is on battery.
> The port works if I prevent a suspend.
> This looked like an ACPI issue to me, but I do not understand
> why there is a request to put the HC into D0.
> 
> Any ideas?

Have you tried asking on the linux-pci and linux-acpi mailing lists?

Alan Stern



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