On 01/21/2019 01:37 PM, Felix Miata wrote:
> TCC -> System Administration -> Monitor & Display has nothing enabled. Thus I would
> expect no attempt from TDE to save power. Is this not the case? After 10 minutes, the
> screen blanks for several seconds, after which the desktop wallpaper reappears, but
> not the panel or open Windows. This happens whether the session is started from TDM
> or with startx. I see nothing in /etc/X11 to account for this, though I'm not sure
> what I would be looking for other than an Option "DPMS" statement in xorg.conf*. Is
> this to be expected? Should I file a TDE bug?

Hard to tell, will have to let Slavek and folks chime in, but recall several
distros removed default console blanking (which shouldn't be implicated with
TDM running, but may), but with startx, you may have DPMS configured. You can
check with

 $ xset q

I don't know what 18.04 does, but you may poke around and determine just what
is set and what isn't. Handy reference:

https://wiki.archlinux.org/index.php/Display_Power_Management_Signaling

(on your last post, TDM should always put your login on Display 1. I've had a
1920x1200 + 1680x1152 setup for years with an ancient nvida card and never had
an issue -- setup through nview. ATI should have a similar setup through
catalyst control panel. Now on monitor sleep/suspend, depending where the
focus is when the monitors go to sleep, I've had kscreensaver put the password
prompt on different monitors)

-- 
David C. Rankin, J.D.,P.E.