Linux i3WM and clipboard/drag-n-drop support

The clipboard & drag and drop features work in the default Ubuntu GUI environment, but not in i3WM. I'm wondering if there need to be any specific background processes running on Linux for these features to work. I've tried comparing the process list between the two environments, but the diff command yields a daunting list that has been too difficult to parse on my own. For those curious, the ps -A diff looks like this (note the side with i3, i3bar, i3status is the i3WM environment):

Code:

6c6
< kworker/0:0-kec_query
---
> kworker/0:0-events
8,9d7
< kworker/0:1-events
< kworker/u64:0-events_unbound
22d19
< kworker/1:0-pm
28,30c25,26
< kworker/1:1-rcu_par_gp
< kworker/1:2-events
< kworker/0:2-rcu_par_gp
---
> kworker/1:2-kec_query
> kworker/0:2-cgroup_destroy
52,54d47
< kworker/u64:2-events_unbound
< kworker/u64:3-events_freezable_power_
< kworker/0:3-events
64d56
< kworker/u64:6
69c61
< kworker/1:3-events
---
> kworker/1:3-inet_frag_wq
82d73
< kworker/u64:7
123d113
< ModemManager
137,138d126
< packagekitd
< gdm-session-wor
141,142c129,134
< pulseaudio
< tracker-miner-f
---
> aptd
> ModemManager
> kworker/0:1-rcu_par_gp
> kworker/u64:0-writeback
> packagekitd
> kworker/1:0-events
143a136,137
> geoclue
> gdm-session-wor
145,154d138
< gvfsd
< gvfsd-fuse
< gvfs-udisks2-vo
< gvfs-goa-volume
< goa-daemon
< goa-identity-se
< gvfs-mtp-volume
< gvfs-afc-volume
< gvfs-gphoto2-vo
< tumblerd
157,209c141,145
< gnome-session-b
< ssh-agent
< at-spi-bus-laun
< dbus-daemon
< gnome-session-c
< gnome-session-b
< gnome-shell
< ibus-daemon
< ibus-memconf
< ibus-extension-
< ibus-x11
< ibus-portal
< at-spi2-registr
< xdg-permission-
< gnome-shell-cal
< evolution-sourc
< dconf-service
< evolution-calen
< evolution-addre
< gjs
< gvfsd-trash
< gsd-a11y-settin
< gsd-color
< gsd-datetime
< gsd-housekeepin
< gsd-keyboard
< gsd-media-keys
< gsd-power
< gsd-print-notif
< gsd-rfkill
< gsd-screensaver
< gsd-sharing
< gsd-smartcard
< gsd-sound
< gsd-usb-protect
< gsd-wacom
< gsd-wwan
< gsd-disk-utilit
< gsd-xsettings
< prlcc
< prldnd
< prlcp
< prlsga
< prlshprof
< evolution-alarm
< gsd-printer
< ibus-engine-sim
< gvfsd-metadata
< seahorse
< gnome-calendar
< update-notifier
< update-manager
< deja-dup-monito
---
> i3
> i3bar
> sh
> i3status
> bash
211a148
> kworker/1:1-events

 

It appears the following processes have something to do with parallels:

Code:

prlcc
prldnd
prlcp
prlsga
prlshprof

I'm guessing prlcp has something to do with the clipboard - but that's just a guess. I ran all of these and put them into the background. The clipboard seems to be working now, but drag-and-drop isn't working fully. Is there an official list of programs I should add to my start-up scripts to achieve optimal feature support?

 

Thanks for the followup and the breadcrumbs!
I was able to get copy-and-paste working with Parallels + Ubuntu 20.04 + i3 windows manager by adding those programs to my i3/config file.