On Tuesday, October 24th, 2023 at 09:36, Pekka Paalanen <ppaalanen@xxxxxxxxx> wrote: > Are DP MST port numbers guaranteed to be tied to the physical hardware > configuration (e.g. how cables are connected) and therefore stable > across reboots? What about stable across kernel upgrades? > > If I knew that, I could perhaps manufacture a stable identifier in > userspace by replacing the parent connector ID with a stable connector > designator. Hm, my assumption is that these are stable, but maybe that's also wrong? Ville, Dmitry, do you know whether the DP MST port numbers are guaranteed stable across reboots when retaining the exact same hardware configuration (not the software, maybe the user upgraded the kernel)?
