On Wed, Mar 27, 2024 at 10:30:32AM +0200, Mika Westerberg wrote: > Probably due to a firmware bug Dell TB16 dock announces that one of its > DisplayPort adapters is actually DP IN. Now this is possible and used > with some external GPUs but not likely in this case as we are dealing > with a dock. Anyways the problem is that the driver tries to create a > DisplayPort tunnel between adapters of the same router which then shows > to user that there is no picture on the display (because there are no > available DP OUT adapters on the dock anymore). > > Fix this by not creating DisplayPort tunnels between adapters that are > on the same router. > > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10265 > Fixes: 274baf695b08 ("thunderbolt: Add DP IN added last in the head of the list of DP resources") > Cc: Gil Fine <gil.fine@xxxxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Applied to fixes.
