On 24 November 2017 at 17:33, John Cunningham <djoh...@gmail.com> wrote: > FWIW, I have buster/xfce on a laptop and have the same problem. Backlight is > fine. I thought about the external monitor trick, too, but I haven't tried > it yet. > --John
Well I didn't manage to wake the screen (in the end, I just did a "systemctl reboot" from a different virtual terminal on the same machine). I *have*, however, worked out what the cause is: Firstly, I should explain that I prefer to work by logging-in on a virtual terminal and then, *if* I want x, I run startx myself. In order for this to work, I had changed systemd's default from graphical.target to multi-user.target by running: sudo systemctl set-default multi-user.target I've discovered that if, on the xfce power manager applet, I set "Automatically lock the session" to "Never" and I uncheck the "Lock screen when system is going for sleep", then the problem does *not* occur i.e. I can always wake up the screen by moving the mouse whenever the screen sleeps etc. Success! (Of sorts!) :-)