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Re: Bug#947955: general: Windows on second (external) screen are blurry after notebook sleep



On Thu, 02 Jan 2020 at 20:15:29 +0100, Samuel Thibault wrote:
> Hello,
> 
> Matthias Brennwald, le jeu. 02 janv. 2020 20:06:27 +0100, a ecrit:
> > the windows that have been opened before activating sleep mode are
> > blurry. Newly opened windows are not affected.
> > The issue happens with windows from all programs, not just a specific program.
> > Moving or resizing the windows does not change the blurry appearance.
> 
> Oh, that's very odd. Are you running X or wayland? Better reassign
> to either xorg-server or weston.

GNOME in Wayland mode is nothing to do with Weston, apart from using the
same protocol, so if there are bugs in its window compositing they'd be
to do with either gnome-shell or libmutter-5-0.

If those windows look blurry, one possible reason would be that the
compositor is somehow drawing them at a position that is not correctly
aligned to the pixel grid, or placing the external screen at a position
that is not correctly aligned.

The mentions of sleep mode and an external screen make me wonder whether
this is to do with the external screen being re-detected after waking up.

    smcv


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