bug#26990: 25.2; Text refresh delay upon moving text or scrolling

[Eli Zaretskii]

> From: Chris Seifried <seifried.chris@gmail.com>
> Date: Thu, 18 May 2017 23:00:53 -0400
> 
> I'm having a strange issue where upon scrolling or shifting text up or
> down with ENTER/BACKSPACE/C-k, lines of text that are supposed to be
> shifted will appear to stay there for a second or two. While this
> artifacting/delay is happening, any keyboard input seems to "refresh"
> the buffer and the text returns to normal. This happens with
> 'emacs -q' as well but it seems less noticeable than running Emacs
> normally. Note that I'm running X.org and Compton. This issue does not
> occur with 'emacs-nox'.
> 
> System:
> - x86-64 Arch-Linux on linux-lts kernel, latest updates
> - Lenovo ThinkPad T550, Intel Core i7 vPro, 16 GB RAM
> - X.org, Compton, GTK+ 3.22.10

Thanks.

Does someone else here use Compton?

Chris, is it possible for you to try without Compton?