Package: wpasupplicant
Version: 2:2.6-18

As title suggests, in the latest version (as of the date and time of
this email), libvte-based terminal like xfce4-terminal and
gnome-terminal experiencing slowness during startup.

Expectation: launching the terminal INSTANTLY when pressing the
shortcut Ctrl+Alt+t or lauching the terminal from an icon in the
xfce4-panel.

Experience: The launching speed varies across different laptops of
mine, on a laptop with I7-7700HQ with HDD, it's around 4 seconds,
whereas on a laptop with I5 450M with HDD, it could be 25 seconds to
more than 2 minutes.

However, if messing around the desktop or opening up Thunar File
Manager, the terminal will open up on the side normally.

Have been experience this issue since 1-2 months ago, I suspect that
It could be due to the June release, wpa (2:2.6-17)
  * Remove dbus changes to StaAuthorized/StaDeauthorized after discussions
    with the upstream.

http://metadata.ftp-master.debian.org/changelogs//main/w/wpa/wpa_2.6-18_changelog

My 1st workaround currently is disabling wpa_supplicant.service. With
network-manager installed, I have to disable network-manager.service
as well to prevent it from calling wpa_supplicant.service. Hence, I
have to start network-manager manually during startup.

2nd workaround (this works or not has to depend on how early I unlock
the display manager) is to delay network-manager.service, as follows,

/lib/systemd/system/network-manager.service
...
#After=network-pre.target dbus.service
#Before=network.target
After=display-manager.service

[Service]
ExecStartPre=/bin/sleep 25
Type=dbus
...

end of file

I have tried googling for solutions but the results are related to
dbus-user-session or dbus-launch, which may link to network-manager as
dependencies.

On the other hand, what I have found out from by installing and
reinstalling packages, and a new minimal installation of debian
buster, is pointing to wpasupplicant instead of other packages.

example of googled results:
https://bbs.archlinux.org/viewtopic.php?id=219817

I am using Debian GNU/Linux buster, kernel 4.17.14-1 and libc6 2.27-5.

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