Re: USB devices on Dell TB16 dock stop working after resuming

[Mika Westerberg]

On Mon, Nov 04, 2019 at 04:25:03PM +0200, Mika Westerberg wrote:
> Hi,
> 
> On Mon, Nov 04, 2019 at 02:13:13PM +0100, Paul Menzel wrote:
> > Dear Linux folks,
> > 
> > On the Dell XPS 13 9380 with Debian Sid/unstable with Linux 5.3.7
> > suspending the system, and resuming with Dellâs Thunderbolt TB16
> > dock connected, the USB input devices, keyboard and mouse,
> > connected to the TB16 stop working. They work for a few seconds
> > (mouse cursor can be moved), but then stop working. The laptop
> > keyboard and touchpad still works fine. All firmware is up-to-date
> > according to `fwupdmgr`.
> 
> What are the exact steps to reproduce? Just "echo mem >
> /sys/power/state" and then resume by pressing power button?

I tried v5.4-rc6 on my 9380 with TB16 dock connected and did a couple of
suspend/resume cycles (to s2idle) but I don't see any issues.

I may have older/different firmware than you, though.