Re: [PATCH 2/3] HID: valve-index: Reboot headset on system power transitions

[Michal Pecio]

On Thu, 10 Sep 2026 15:43:18 -0500, Mario Limonciello wrote:
> >> +/*
> >> + * The headset's EDID service is lost when the host disables the DisplayPort
> >> + * PHY during system suspend, so it needs the reboot on the way out of
> >> + * suspend.  Doing it on the way in does not work: the headset dropping off
> >> + * USB is a remote-wakeup event from its hub and aborts the suspend.
> >> + */  
> > 
> > The internal hub which will be quirked by the next patch, or its parent?  
> 
> It has to be the internal hub if quirking it works, no?

I believe there are two separate problems here:

1. resetting the device at suspend causes instant wakeup
2. a few seconds later the system wakes up anyway

1. is solved by resetting on resume rather than suspend
2. is solved by the quirk

Questions:

Any chance that 2 also solves 1?
Would resetting on suspend be preferable, as the comment suggests?
Maybe it would, if the reset can race with DP seeing empty EDID? 

Regards,
Michal