linux-kernel - RE: How to enable auto-suspend by default

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Message-ID: <DM6PR19MB26360A123E3BFA4741853AF5FAE90@DM6PR19MB2636.namprd19.prod.outlook.com>
Date:   Tue, 10 Nov 2020 20:45:16 +0000
From:   "Limonciello, Mario" <Mario.Limonciello@...l.com>
To:     "Theodore Y. Ts'o" <tytso@....edu>
CC:     Greg KH <gregkh@...uxfoundation.org>,
        Bastien Nocera <hadess@...ess.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Linux PM <linux-pm@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        Hans de Goede <hdegoede@...hat.com>
Subject: RE: How to enable auto-suspend by default


> One note...  I'll double check, but on my XPS 13 9380, as I recall, I
> have to manually disable autosuspend on all of the XHCI controllers
> and internal hubs after running "powertop --auto-tune", or else any
> external mouse attached to said USB device will be dead to the world
> for 2-3 seconds if the autosuspend timeout has kicked in, which was
> ***super*** annoying.
> 
> 						- Ted

Perhaps this was not XHCI controller in the system, but maybe external
one provided by ASMedia?  I've not heard anything similar for host system
yet.