Noam Postavsky <npostavs@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Noam Postavsky <npostavs@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Noam Postavsky <npostavs@HIDDEN>
to control <at> debbugs.gnu.org.
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From: Noam Postavsky <npostavs@HIDDEN>
To: Bob Hepple <bob.hepple@HIDDEN>
Subject: Re: bug#35740: 26.1; scroll bar jaggies / tearing
References: <CAHzpm2jxK0GYcBtx2QVymhbArnY6RgNcNe7EoMhd-u=zb3SVtQ@HIDDEN>
Date: Sat, 25 May 2019 17:03:59 -0400
In-Reply-To: <CAHzpm2jxK0GYcBtx2QVymhbArnY6RgNcNe7EoMhd-u=zb3SVtQ@HIDDEN> (Bob
Hepple's message of "Wed, 15 May 2019 09:06:49 +1000")
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retitle 35740 [gtk] scroll bar jaggies / tearing
severity 35740 minor
tags 35740 + confirmed
quit
Bob Hepple <bob.hepple@HIDDEN> writes:
> When I drift the sprite (mouse cursor) in and out of emacs the scroll
> bar goes a little bit crazy with animated jaggies running up and down
> its length.
> the problem is resolved with emacs compiled with the athena/motif
> or lucid toolkits
Yeah, after building with gtk I see this too.
> While an extremely minor annoyance, it remains irritating and shows
> emacs in a bad light. Is it possible that emacs is doing something weird
> / sophisticated with the scroll bar?
I don't think Emacs is doing anything especially weird with the
scrollbar. There is a comment in xg_finish_scroll_bar_creation
(src/gtkutil.c) which seems related:
/* The scroll bar widget does not draw on a window of its own. Instead
it draws on the parent window, in this case the edit widget. So
whenever the edit widget is cleared, the scroll bar needs to redraw
also, which causes flicker. Put an event box between the edit widget
and the scroll bar, so the scroll bar instead draws itself on the
event box window. */
bug-gnu-emacs@HIDDEN:bug#35740; Package emacs.
Full text available.Received: (at 35740) by debbugs.gnu.org; 15 May 2019 22:29:04 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 15 18:29:04 2019 Received: from localhost ([127.0.0.1]:53574 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1hR2OW-0003rj-Cq for submit <at> debbugs.gnu.org; Wed, 15 May 2019 18:29:04 -0400 Received: from mail-it1-f172.google.com ([209.85.166.172]:37085) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <npostavs@HIDDEN>) id 1hR2OU-0003rD-FD for 35740 <at> debbugs.gnu.org; Wed, 15 May 2019 18:29:03 -0400 Received: by mail-it1-f172.google.com with SMTP id m140so2862417itg.2 for <35740 <at> debbugs.gnu.org>; Wed, 15 May 2019 15:29:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version; bh=SoKK/kWB3sNYHE8+tiIRbH3Ytj0J2DwygFMU9U9uHMQ=; b=Tdi6lzIW0cuMkIeK7mqck5Oknwpnv9MqsljqcUcL5S+xAnZ47z1sR799rmHxorKST4 yDZRTk8ytnvPBeKpB1dezbIqkq6sjp2HxraiFmOOpQMUzrwbXF66pZCQIxuwvj7bhQy6 j1UENt2bY9yr1buLqUOLEYGDelAAAwwMeFKxcup8IU9wGzZvhSDiVWn6e0yEPjUIi5p9 eKShBpTA2JOpjeH1Bc8vjWUbfCuANO0Camw/KYvpNP/ZA6Tg/LfRfSweAez2cSDr0SDV tN0g/BJ9H32tss0x7QsP41b3vG9c5ZZ4bxQ4jMjZtFkKueZdeSC4Ot8ZqX/XBP8ObGxS MCcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version; bh=SoKK/kWB3sNYHE8+tiIRbH3Ytj0J2DwygFMU9U9uHMQ=; b=HHTFNApQxiYip3vfnDIKkOylo7iJrpbEsJ2qvwX2s0nSI+WfEQoQvsmm8stfuKiom8 kcC22gYcvU2cdr8QKXimrJO6yXnOw/O62LQp2+/ZPIKwduzZJ2FlAip63tKAItoREtGd +bUaWfvkbo58na4kcQTem23E98T+SHUQfWM29nMnTlsKDd9CxXDXiOIfHE0MTaCnPQbc B/V3+/plezuE2H5NeXiQ9Y8Mpk1GmG31EV4DNJUGedKezi6VOF+lzNwzua65IJ86OMDw xxHnDn4pcgcFlucCYqmm4lBGApkLbJ7uXLeB3FAv7MUGRxNwtEflSIlAwbOw6R7PIJku wpxw== X-Gm-Message-State: APjAAAWLICtQV4ypF2TUNpWnZt2qFMvlcxpVFoBahx0U/avjFTiQ5/r/ pj0nPFO1XPQenpgNAYljJO8= X-Google-Smtp-Source: APXvYqxOE3Rl+j28YAWdsB+6hAxm7E3AjevebmpBfAWyT0hX1pd+Wc1Xi5qZJMvifrbrGhquamqzhQ== X-Received: by 2002:a02:c90a:: with SMTP id t10mr27991664jao.68.1557959336919; Wed, 15 May 2019 15:28:56 -0700 (PDT) Received: from minid (cbl-45-2-119-34.yyz.frontiernetworks.ca. [45.2.119.34]) by smtp.gmail.com with ESMTPSA id j81sm905969itj.26.2019.05.15.15.28.55 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 15 May 2019 15:28:55 -0700 (PDT) From: Noam Postavsky <npostavs@HIDDEN> To: 35740 <at> debbugs.gnu.org Subject: Re: bug#35740: 26.1; scroll bar jaggies / tearing Date: Wed, 15 May 2019 18:28:55 -0400 Message-ID: <87bm03fj2w.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 35740 Cc: Bob Hepple <bob.hepple@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --=-=-= Content-Type: text/plain [forwarding to list, please use "Reply All" to keep 35740 <at> debbugs.gnu.org on Cc] --=-=-= Content-Type: message/rfc822 Content-Disposition: inline References: <CAHzpm2jxK0GYcBtx2QVymhbArnY6RgNcNe7EoMhd-u=zb3SVtQ@HIDDEN> <85h89vwndn.fsf@HIDDEN> In-Reply-To: <85h89vwndn.fsf@HIDDEN> From: Bob Hepple <bob.hepple@HIDDEN> Date: Thu, 16 May 2019 08:11:47 +1000 Message-ID: <CAHzpm2iQ-z4if0NO=_X9s4BjtuwecAcd=joWDV5kAX_Ae69N8A@HIDDEN> Subject: Re: bug#35740: 26.1; scroll bar jaggies / tearing To: npostavs@HIDDEN MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="====-=-=" --====-=-= Content-Type: text/plain; charset=utf-8 Content-Disposition: inline > (modify-all-frames-parameters '((inhibit-double-buffering . t))) ... has no effect at all Cheers Bob --====-=-=-- --=-=-=--
bug-gnu-emacs@HIDDEN:bug#35740; Package emacs.
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From: npostavs@HIDDEN
To: Bob Hepple <bob.hepple@HIDDEN>
Subject: Re: bug#35740: 26.1; scroll bar jaggies / tearing
References: <CAHzpm2jxK0GYcBtx2QVymhbArnY6RgNcNe7EoMhd-u=zb3SVtQ@HIDDEN>
Date: Wed, 15 May 2019 15:04:04 -0400
In-Reply-To: <CAHzpm2jxK0GYcBtx2QVymhbArnY6RgNcNe7EoMhd-u=zb3SVtQ@HIDDEN> (Bob
Hepple's message of "Wed, 15 May 2019 09:06:49 +1000")
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Bob Hepple <bob.hepple@HIDDEN> writes:
> When I drift the sprite (mouse cursor) in and out of emacs the scroll
> bar goes a little bit crazy with animated jaggies running up and down
> its length. No other window (eg terminals, firefox etc) shows this
> artifact.
>
> I've put up a video of the glitch at https://youtu.be/EMa1OWDhVS4. It
> shows both emacs -Q and plain emacs running.
Does disabling double buffering have any effect?
(modify-all-frames-parameters '((inhibit-double-buffering . t)))
bug-gnu-emacs@HIDDEN:bug#35740; Package emacs.
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In GNU Emacs 26.1 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.23.2)
of 2018-08-13 built on buildvm-13.phx2.fedoraproject.org
Windowing system distributor 'Fedora Project', version 11.0.12004000
System Description: Fedora release 29 (Twenty Nine)
Recent messages:
.emacs.d/modules/ohai-ido.el: =E2=80=98flet=E2=80=99 is an obsolete macro (=
as of 24.3); use
either =E2=80=98cl-flet=E2=80=99 or =E2=80=98cl-letf=E2=80=99.
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Loading /home/bhepple/.emacs.d/recentf...done
Cleaning up the recentf list...done (0 removed)
Loading /home/bhepple/.emacs.d/user.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark saved where search started
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Configured features:
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LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
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Important settings:
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/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-agenda hides
/usr/share/emacs/26.1/lisp/org/org-agenda
/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-crypt hides
/usr/share/emacs/26.1/lisp/org/org-crypt
/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-picolisp hides
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/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob hides
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/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-stan hides
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/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-scheme hides
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Features:
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ibuf-macs ibuffer-vc indent-tools yafolding indent-tools-indentation-of
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term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang
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multi-tty make-network-process emacs)
Memory information:
((conses 16 636948 101912)
(symbols 48 49456 2)
(miscs 40 1253 6535)
(strings 32 163905 48166)
(string-bytes 1 4592363)
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When I drift the sprite (mouse cursor) in and out of emacs the scroll
bar goes a little bit crazy with animated jaggies running up and down
its length. No other window (eg terminals, firefox etc) shows this
artifact.
I've put up a video of the glitch at https://youtu.be/EMa1OWDhVS4. It
shows both emacs -Q and plain emacs running.
The hardware is hardly underpowered - Dell XPS L502X i7 laptop with
intel graphics.
this is fedora-29 and emacs-26.1-6.fc29.x86_64 as well as emacs-26.2
compiled from source
the problem occurs with 'emacs -Q' as well as plain 'emacs'
the problem occurs with i3wm and lxde but is resolved with compton
or any compositing WM such as gnome
the problem is not resolved with kvm/modesetting driver instead of
xorg-x11-drv-intel
the problem is resolved with emacs compiled with the athena/motif
or lucid toolkits
the problem is slightly alleviated by using emacs compiled with the
gtk2 toolkit
the problem does not occur on my media servers - 55" TV via HDMI
with lxde on fedora-29 or raspbian
one person has reported (on /r/emacs) that they can duplicate the
problem on their laptop (an XPS 13 Haswell) as well as an AMD Vega
desktop
While an extremely minor annoyance, it remains irritating and shows
emacs in a bad light. Is it possible that emacs is doing something weird
/ sophisticated with the scroll bar?
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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><div dir=3D"ltr">In GNU Emacs 2=
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g/ox-publish<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-i=
nlinetask hides /usr/share/emacs/26.1/lisp/org/org-inlinetask<br>/home/bhep=
ple/.emacs.d/elpa/org-plus-contrib-20181230/org-pcomplete hides /usr/share/=
emacs/26.1/lisp/org/org-pcomplete<br>/home/bhepple/.emacs.d/elpa/org-plus-c=
ontrib-20181230/org-src hides /usr/share/emacs/26.1/lisp/org/org-src<br>/ho=
me/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ox hides /usr/share/emac=
s/26.1/lisp/org/ox<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230=
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p/org/ox-beamer<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/or=
g-protocol hides /usr/share/emacs/26.1/lisp/org/org-protocol<br>/home/bhepp=
le/.emacs.d/elpa/org-plus-contrib-20181230/org-docview hides /usr/share/ema=
cs/26.1/lisp/org/org-docview<br>/home/bhepple/.emacs.d/elpa/org-plus-contri=
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macs/26.1/lisp/org/org-feed<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib=
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ome/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-list hides /usr/sha=
re/emacs/26.1/lisp/org/org-list<br>/home/bhepple/.emacs.d/elpa/org-plus-con=
trib-20181230/ob-plantuml hides /usr/share/emacs/26.1/lisp/org/ob-plantuml<=
br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-lisp hides /usr=
/share/emacs/26.1/lisp/org/ob-lisp<br>/home/bhepple/.emacs.d/elpa/org-plus-=
contrib-20181230/ob-java hides /usr/share/emacs/26.1/lisp/org/ob-java<br>/h=
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e/emacs/26.1/lisp/org/ob-clojure<br>/home/bhepple/.emacs.d/elpa/org-plus-co=
ntrib-20181230/ob-C hides /usr/share/emacs/26.1/lisp/org/ob-C<br>/home/bhep=
ple/.emacs.d/elpa/org-plus-contrib-20181230/ob-core hides /usr/share/emacs/=
26.1/lisp/org/ob-core<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181=
230/ob-ocaml hides /usr/share/emacs/26.1/lisp/org/ob-ocaml<br>/home/bhepple=
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cs/26.1/lisp/org/ob-emacs-lisp<br>/home/bhepple/.emacs.d/elpa/org-plus-cont=
rib-20181230/org-plot hides /usr/share/emacs/26.1/lisp/org/org-plot<br>/hom=
e/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ox-ascii hides /usr/share=
/emacs/26.1/lisp/org/ox-ascii<br>/home/bhepple/.emacs.d/elpa/org-plus-contr=
ib-20181230/org-bibtex hides /usr/share/emacs/26.1/lisp/org/org-bibtex<br>/=
home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-info hides /usr/sh=
are/emacs/26.1/lisp/org/org-info<br>/home/bhepple/.emacs.d/elpa/org-plus-co=
ntrib-20181230/org-rmail hides /usr/share/emacs/26.1/lisp/org/org-rmail<br>=
/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-footnote hides /u=
sr/share/emacs/26.1/lisp/org/org-footnote<br>/home/bhepple/.emacs.d/elpa/or=
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roovy<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-w3m hide=
s /usr/share/emacs/26.1/lisp/org/org-w3m<br>/home/bhepple/.emacs.d/elpa/org=
-plus-contrib-20181230/org-clock hides /usr/share/emacs/26.1/lisp/org/org-c=
lock<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-screen hid=
es /usr/share/emacs/26.1/lisp/org/ob-screen<br>/home/bhepple/.emacs.d/elpa/=
org-plus-contrib-20181230/ob-J hides /usr/share/emacs/26.1/lisp/org/ob-J<br=
>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ox-texinfo hides /us=
r/share/emacs/26.1/lisp/org/ox-texinfo<br>/home/bhepple/.emacs.d/elpa/org-p=
lus-contrib-20181230/ob-tangle hides /usr/share/emacs/26.1/lisp/org/ob-tang=
le<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-octave hides=
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br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-habit hides /u=
sr/share/emacs/26.1/lisp/org/org-habit<br>/home/bhepple/.emacs.d/elpa/org-p=
lus-contrib-20181230/ob-ledger hides /usr/share/emacs/26.1/lisp/org/ob-ledg=
er<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ox-md hides /us=
r/share/emacs/26.1/lisp/org/ox-md<br>/home/bhepple/.emacs.d/elpa/org-plus-c=
ontrib-20181230/ob-matlab hides /usr/share/emacs/26.1/lisp/org/ob-matlab<br=
>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-install hides /u=
sr/share/emacs/26.1/lisp/org/org-install<br>/home/bhepple/.emacs.d/elpa/org=
-plus-contrib-20181230/ob-ruby hides /usr/share/emacs/26.1/lisp/org/ob-ruby=
<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-shen hides /us=
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-contrib-20181230/ob-org hides /usr/share/emacs/26.1/lisp/org/ob-org<br>/ho=
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pple/.emacs.d/elpa/org-plus-contrib-20181230/org-agenda hides /usr/share/em=
acs/26.1/lisp/org/org-agenda<br>/home/bhepple/.emacs.d/elpa/org-plus-contri=
b-20181230/org-crypt hides /usr/share/emacs/26.1/lisp/org/org-crypt<br>/hom=
e/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-picolisp hides /usr/sh=
are/emacs/26.1/lisp/org/ob-picolisp<br>/home/bhepple/.emacs.d/elpa/org-plus=
-contrib-20181230/ob hides /usr/share/emacs/26.1/lisp/org/ob<br>/home/bhepp=
le/.emacs.d/elpa/org-plus-contrib-20181230/ob-stan hides /usr/share/emacs/2=
6.1/lisp/org/ob-stan<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-201812=
30/ob-vala hides /usr/share/emacs/26.1/lisp/org/ob-vala<br>/home/bhepple/.e=
macs.d/elpa/org-plus-contrib-20181230/ob-io hides /usr/share/emacs/26.1/lis=
p/org/ob-io<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-sch=
eme hides /usr/share/emacs/26.1/lisp/org/ob-scheme<br>/home/bhepple/.emacs.=
d/elpa/org-plus-contrib-20181230/ox-latex hides /usr/share/emacs/26.1/lisp/=
org/ox-latex<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-m=
acs hides /usr/share/emacs/26.1/lisp/org/org-macs<br>/home/bhepple/.emacs.d=
/elpa/org-plus-contrib-20181230/org-irc hides /usr/share/emacs/26.1/lisp/or=
g/org-irc<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-mscge=
n hides /usr/share/emacs/26.1/lisp/org/ob-mscgen<br>/home/bhepple/.emacs.d/=
elpa/org-plus-contrib-20181230/ob-ebnf hides /usr/share/emacs/26.1/lisp/org=
/ob-ebnf<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-id hi=
des /usr/share/emacs/26.1/lisp/org/org-id<br>/home/bhepple/.emacs.d/elpa/or=
g-plus-contrib-20181230/ob-R hides /usr/share/emacs/26.1/lisp/org/ob-R<br>/=
home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ox-man hides /usr/shar=
e/emacs/26.1/lisp/org/ox-man<br>/home/bhepple/.emacs.d/elpa/org-plus-contri=
b-20181230/org-macro hides /usr/share/emacs/26.1/lisp/org/org-macro<br>/hom=
e/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/org-attach hides /usr/sha=
re/emacs/26.1/lisp/org/org-attach<br>/home/bhepple/.emacs.d/elpa/org-plus-c=
ontrib-20181230/ox-html hides /usr/share/emacs/26.1/lisp/org/ox-html<br>/ho=
me/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-keys hides /usr/share=
/emacs/26.1/lisp/org/ob-keys<br>/home/bhepple/.emacs.d/elpa/org-plus-contri=
b-20181230/ob-awk hides /usr/share/emacs/26.1/lisp/org/ob-awk<br>/home/bhep=
ple/.emacs.d/elpa/org-plus-contrib-20181230/ob-maxima hides /usr/share/emac=
s/26.1/lisp/org/ob-maxima<br>/home/bhepple/.emacs.d/elpa/org-plus-contrib-2=
0181230/org-loaddefs hides /usr/share/emacs/26.1/lisp/org/org-loaddefs<br>/=
home/bhepple/.emacs.d/elpa/org-plus-contrib-20181230/ob-dot hides /usr/shar=
e/emacs/26.1/lisp/org/ob-dot<br>/home/bhepple/.emacs.d/elpa/org-plus-contri=
b-20181230/ob-asymptote hides /usr/share/emacs/26.1/lisp/org/ob-asymptote<b=
r><br>Features:<br>(shadow sort mail-extr emacsbug sendmail smex misearch m=
ulti-isearch<br>add-log vc-src org-eldoc org-eww org-rmail org-mhe org-irc =
org-info<br>org-gnus nnir gnus-sum gnus-group gnus-undo gnus-start gnus-clo=
ud nnimap<br>nnmail mail-source tls gnutls utf7 netrc nnoo parse-time gnus-=
spec<br>gnus-int gnus-range message rmc puny rfc822 mml mml-sec epa epg<br>=
mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils<br>ma=
ilheader gnus-win gnus nnheader gnus-util rmail rmail-loaddefs rfc2047<br>r=
fc2045 ietf-drums mail-utils mm-util mail-prsvr org-docview doc-view<br>jka=
-compr org-bibtex bibtex org-bbdb org-w3m .emacs vc vc-dispatcher<br>popwin=
windmove hl-line ps-ccrypt server recentf tree-widget gk-ibuffer<br>ibuf-m=
acs ibuffer-vc indent-tools yafolding indent-tools-indentation-of<br>ohai-s=
mart-mode-line smart-mode-line-light-theme smart-mode-line<br>rich-minority=
ohai-help which-key ohai-orgmode org-cliplink<br>org-cliplink-transport or=
g-cliplink-string em-glob esh-util org-element<br>avl-tree generator org ob=
ob-tangle ob-ref ob-lob ob-table ob-exp<br>org-macro org-footnote org-src =
ob-comint ob-keys org-pcomplete pcomplete<br>org-list org-faces org-entitie=
s noutline outline org-version<br>ob-emacs-lisp ob-core ob-eval org-compat =
org-macs org-loaddefs find-func<br>cal-menu calendar cal-loaddefs ohai-proj=
ect projectile grep compile<br>comint ansi-color ibuf-ext ibuffer ibuffer-l=
oaddefs ohai-dired dired+<br>image-dired image-mode format-spec image-file =
bookmark+ bookmark+-key<br>derived bookmark+-1 bookmark+-bmu bookmark+-lit =
bookmark pp dired-x<br>dired-aux dired dired-loaddefs ohai-codestyle ethan-=
wspace ohai-complete<br>company-emoji company-emoji-list company-quickhelp =
pos-tip<br>company-oddmuse company-keywords company-etags etags xref projec=
t<br>company-gtags company-dabbrev-code company-dabbrev company-files<br>co=
mpany-capf company-cmake company-xcode company-clang company-semantic<br>co=
mpany-eclim company-template company-bbdb company pcase ohai-editing<br>ele=
c-pair ohai-navigation anzu thingatpt avy ohai-ido flx-ido flx<br>ido-verti=
cal-mode ido-completing-read+ memoize minibuf-eldef ido<br>ohai-general aut=
orevert filenotify delsel iso-transl ohai-fonts<br>ohai-appearance advice d=
iminish which-func imenu hlinum linum term<br>disp-table ehelp ohai-set-pat=
h exec-path-from-shell ohai-startup-wizard<br>ohai-personal-taste ohai-upda=
te ohai-module-selector cus-edit wid-edit<br>ohai-module-index ohai-lib f d=
ash s ohai-package use-package<br>use-package-ensure use-package-delight us=
e-package-diminish<br>use-package-bind-key bind-key easy-mmode use-package-=
core paradox<br>paradox-menu paradox-commit-list hydra ring lv paradox-exec=
ute<br>paradox-github paradox-core spinner subr-x cl-extra help-mode cl par=
en<br>cus-start cus-load finder-inf info edmacro kmacro package easymenu<br=
>epg-config url-handlers url-parse auth-source cl-seq eieio eieio-core<br>c=
l-macs eieio-loaddefs password-cache url-vars seq byte-opt gv bytecomp<br>b=
yte-compile cconv cl-loaddefs cl-lib time-date mule-util tooltip eldoc<br>e=
lectric uniquify ediff-hook vc-hooks lisp-float-type mwheel term/x-win<br>x=
-win term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe<br>=
tabulated-list replace newcomment text-mode elisp-mode lisp-mode<br>prog-mo=
de register page menu-bar rfn-eshadow isearch timer select<br>scroll-bar mo=
use jit-lock font-lock syntax facemenu font-core<br>term/tty-colors frame c=
l-generic cham georgian utf-8-lang misc-lang<br>vietnamese tibetan thai tai=
-viet lao korean japanese eucjp-ms cp51932<br>hebrew greek romanian slovak =
czech european ethiopic indian cyrillic<br>chinese composite charscript cha=
rprop case-table epa-hook jka-cmpr-hook<br>help simple abbrev obarray minib=
uffer cl-preloaded nadvice loaddefs<br>button faces cus-face macroexp files=
text-properties overlay sha1 md5<br>base64 format env code-pages mule cust=
om widget hashtable-print-readable<br>backquote dbusbind inotify lcms2 dyna=
mic-setting system-font-setting<br>font-render-setting xwidget-internal mov=
e-toolbar gtk x-toolkit x<br>multi-tty make-network-process emacs)<br><br>M=
emory information:<br>((conses 16 636948 101912)<br>=C2=A0(symbols 48 49456=
2)<br>=C2=A0(miscs 40 1253 6535)<br>=C2=A0(strings 32 163905 48166)<br>=C2=
=A0(string-bytes 1 4592363)<br>=C2=A0(vectors 16 84249)<br>=C2=A0(vector-sl=
ots 8 2127567 299808)<br>=C2=A0(floats 8 303 477)<br>=C2=A0(intervals 56 44=
48 2270)<br>=C2=A0(buffers 992 14))<br><br>When I drift the sprite (mouse c=
ursor) in and out of emacs the scroll<br>bar goes a little bit crazy with a=
nimated jaggies running up and down<br>its length. No other window (eg term=
inals, firefox etc) shows this<br>artifact.<br><br>I've put up a video =
of the glitch at <a href=3D"https://youtu.be/EMa1OWDhVS4">https://youtu.be/=
EMa1OWDhVS4</a>. It<br>shows both emacs -Q and plain emacs running.<br><br>=
The hardware is hardly underpowered - Dell XPS L502X i7 laptop with<br>inte=
l graphics.<br><br>=C2=A0=C2=A0=C2=A0 this is fedora-29 and emacs-26.1-6.fc=
29.x86_64 as well as emacs-26.2<br>=C2=A0=C2=A0=C2=A0 compiled from source<=
br><br>=C2=A0=C2=A0=C2=A0 the problem occurs with 'emacs -Q' as wel=
l as plain 'emacs'<br><br>=C2=A0=C2=A0=C2=A0 the problem occurs wit=
h i3wm and lxde but is resolved with compton<br>=C2=A0=C2=A0=C2=A0 or any c=
ompositing WM such as gnome<br><br>=C2=A0=C2=A0=C2=A0 the problem is not re=
solved with kvm/modesetting driver instead of<br>=C2=A0=C2=A0=C2=A0 xorg-x1=
1-drv-intel<br><br>=C2=A0=C2=A0=C2=A0 the problem is resolved with emacs co=
mpiled with the athena/motif<br>=C2=A0=C2=A0=C2=A0 or lucid toolkits<br><br=
>=C2=A0=C2=A0=C2=A0 the problem is slightly alleviated by using emacs compi=
led with the<br>=C2=A0=C2=A0=C2=A0 gtk2 toolkit<br><br>=C2=A0=C2=A0=C2=A0 t=
he problem does not occur on my media servers - 55" TV via HDMI<br>=C2=
=A0=C2=A0=C2=A0 with lxde on fedora-29 or raspbian<br><br>=C2=A0=C2=A0=C2=
=A0 one person has reported (on /r/emacs) that they can duplicate the<br>=
=C2=A0=C2=A0=C2=A0 problem on their laptop (an XPS 13 Haswell) as well as a=
n AMD Vega<br>=C2=A0=C2=A0=C2=A0 desktop<br><br>While an extremely minor an=
noyance, it remains irritating and shows<br>emacs in a bad light. Is it pos=
sible that emacs is doing something weird<br>/ sophisticated with the scrol=
l bar?<br><br></div></div>
--0000000000002157160588e11756--
Bob Hepple <bob.hepple@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#35740; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.