see below On Mon, Jul 2, 2018 at 2:25 AM, Duncan <1i5t5.duncan@xxxxxxx> wrote: > Bug Reporter posted on Sun, 01 Jul 2018 21:17:29 -0400 as excerpted: > This is likely the kscreen component, or libkscreen ... > I finally unmerged/uninstalled those two components To clarify, you removed kscreen and libkscreen? I'm running Arch Linux, so I can probably uninstall those packages as well. > And if I /do/ want to change the layout or resolution on-the-fly, I can use xrandr to do it, or simply > change the xorg.conf configuration and restart x/kde/plasma to have it take effect. It would be really helpful to find some examples of exactly how to apply your approach to a laptop which docks and undocks to/from a dock with multiple external displays. I would like to try your approach, but I don't have any experience with xrandr at all, and it has been an incredibly long time since I messed with xorg.conf. Any instructions or links are appreciated. > The trouble in this case seems to be that kscreen assumes a laptop with a monitor attached... Thanks for the clue. Knowing that this is related dto kscreen, I reported a bug here: 396071 – plasma5 screen management going wrong https://bugs.kde.org/show_bug.cgi?id=396071 > There's no real way to tell it "hey, this is an xorg-preconfigured > desktop system, use it as-is and don't bother it". It worked fairly well for the last two years. I agree with you that it has never been perfect or totally robust, but it was good enough not to interfere with our work in a major way until it became broken in the last couple weeks. Now it is a serious problem. I need some help with further testing. In particular, could someone tell me which configuration files are involved in the System Settings > "Display and Monitor" settings? In particular, where does KDE store the screen geometry and relative placement (and primary display)? And which config files are involved in the desktop background and panel placement for each screen? These are the main settings that are getting lost. > set plain text for mailing lists Done. But in Gmail, I will have to remember to toggle it every single time I send a mail to this list. As you suggested, a better solution is needed. Gmail also defaults to toip-posting, which seems to be a bad decision by Google...