Bug#976235: enlightenment: e switches off screen|monitor
Ross Vandegrift
rvandegrift at debian.org
Mon Dec 7 06:25:53 GMT 2020
On Mon, Dec 07, 2020 at 12:43:35AM +0100, enno wrote:
> >>>>> "Ross" == Ross Vandegrift <rvandegrift at debian.org> writes:
> > [...] - it might be useful to run `xrandr` in
> > flwm and a bare X session to compare with E's output regarding
> > your displays.
>
> xrandr on flwm and on pure X diff -q 0:
> LVDS connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 174mm
> 1600x900 59.90*+ 39.93
> 1440x900 59.99
> 1280x854 59.95
> 1280x800 59.96
> 1280x720 59.97
> 1152x768 59.95
> 1024x768 59.95
> 800x600 59.96
> 848x480 59.94
> 720x480 59.94
> 640x480 59.94
> DisplayPort-0 disconnected (normal left inverted right x axis y axis)
> DisplayPort-1 disconnected (normal left inverted right x axis y axis)
> DisplayPort-2 disconnected (normal left inverted right x axis y axis)
> VGA-0 disconnected (normal left inverted right x axis y axis)
>
> So all three cases use LVDS and know the precise measurements of my display,
> just e seems to need something additional which alas is not in the dependency
> list i suppose.
Well, not quite - this output shows that X knows the measurements of your LVDS
display, ie, your laptop's built-in panel. The external screen are not
detected - that confirms this is not a problem in E.
Since X doesn't detect a display connected to the other outputs, E is disabling
them. I bet flwm doesn't have any knowledge of xrandr, and just runs on any X
display it finds.
I don't know why the connection would be misreported - probably a bug in the
video driver.
Ross
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