GNU bug report logs - #18912
24.4; mode-line corruption on graphical frames in dual-headed display

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Bruno Félix Rezende Ribeiro <oitofelix <at> gnu.org>
Cc: 18912 <at> debbugs.gnu.org
Subject: bug#18912: 24.4; mode-line corruption on graphical frames in dual-headed display
Date: Mon, 03 Nov 2014 23:19:19 +0200

> Date: Mon, 03 Nov 2014 19:01:43 -0200
> From: Bruno Félix Rezende Ribeiro <oitofelix <at> gnu.org>
> CC: 18912 <at> debbugs.gnu.org
> 
> >   M-: (pos-visible-in-window-p t nil t) RET
> > 
> > Please invoke this after "C-x d" in each case.
> 
> In the *good* configuration: (0 594 0 17 1 33)
> In the *bad* configuration: (0 594 0 17 1 33)

Again identical.  Looks like indeed it's some problem with your
graphics card, because Emacs gets the same information in both cases:
in both cases, only 1 pixel of the last line is visible.

I'll try to think about additional tests, but meanwhile I suggest that
you try lowering the level of the acceleration of your card, and see
if that helps.

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