bug#61258: 29.0.60; pgtk build from git, WSLg, slow, heavy cpu use

[Ruijie Yu]

On Feb 4, 2023, at 02:53, J. Scott Berg <jsberg-bnl@outlook.com> wrote:
> 
> Emacs built with pgtk. Editing in f90 mode, though I don't think this is
> important. Display is WSLg. Severe input lag, to the point off becoming
> unusable, gets worse with more frames (or just time?). Heavy CPU usage by
> emacs while doing anything. Problem not seen when not built with pgtk.

Hello,

Last time I checked, PGTK only aims to support Wayland -- while incidentally 
also *usually but not always* work in X -- and WSLg is an X server/client 
thing.  There is even a warning shown when I run my PGTK build on an X DE.  So, 
intuitively, if my information is correct and up to date, you are not expected 
to run PGTK build on WSLg and you would need to disable the PGTK flag during 
config. 

> In GNU Emacs 29.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version
> 3.24.36, cairo version 1.17.6) of 2023-02-01 built on LAD-158343
> Repository revision: f91bf9df892417a2e4add6d0d77ac5123a579bfc
> Repository branch: emacs-29
> System Description: Arch Linux
> 
> Configured using:
> 'configure --prefix=/home/jsberg/opt/emacs-230201-f91bf9df892
> --with-pgtk --with-native-compilation'
> 
> Configured features:
> ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
> JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY INOTIFY
> PDUMPER PGTK PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
> TOOLKIT_SCROLL_BARS WEBP XIM GTK3 ZLIB

Best,


RY