https://bugs.kde.org/show_bug.cgi?id=510077
--- Comment #2 from J. B. Crawford <[email protected]> --- Did some further poking around today. First thing: I noticed that in Display Configuration, both monitors are displayed with the same serial number. That seems suspicious and like it might be contributing to the problem. I will attach a couple of screenshots of Display Configuration before/after sleep because I'm not totally sure if the serial number that shows up is "stable" either. I wanted to check and make sure that something bizarre wasn't happening with my dock or video adapter, so I checked the EDID by hand (e.g. cat /sys/class/drm/card1-DP-3/edid | edid-decode). That way, DP-2 and DP-3 indeed have to different serial numbers... but the one displayed by Display Configuration for both monitors is the serial number on DP-2 (they are identical monitors so EDID data is otherwise the same). And here's what's interesting: I disconnected and reconnected the dock, and now see two different serial numbers in Display Configuration. The problem hasn't recurred; I'm getting consistent monitor layout and custom tiling setups each time. So I think the root cause of this might be mixing up EDID info on the two devices so that they both have the same serial number as far as KDE is concerned, and can't be told apart. Later when I have some time I am going to do some repeated dock/undock cycles to see if the serial number confusion is consistent. -- You are receiving this mail because: You are watching all bug changes.
