Lamentandolo mucho no existe un medidor de velocidad de conexión para KDE con Plasma 5 como lo hay para Gnome 3. La unica alternativa para KDE era
Yet Another Netspeed Plasmoid pero cuando intentes instalarlo te encontraras con un dolor de cabeza.
La otra opción es instalar conky y colocarlo en el panel deseado.
Este es mi fichero conky.conf para configurarlo como en la imagen:
# set to yes if you want Conky to be forked in the background
background no
# Use Xft?
use_xft yes
# Xft font when Xft is enabled
xftfont Liberation Mono:bold:size=20
# Text alpha when using Xft
xftalpha 1
# Update interval in seconds
update_interval 1
# This is the number of times Conky will update before quitting.
# Set to zero to run forever.
total_run_times 0
# Create own window instead of using desktop (required in nautilus)
own_window no
# Use double buffering (reduces flicker, may not work for everyone)
double_buffer yes
# Minimum size of text area
minimum_size 310 0
maximum_width 310
# Draw shades?
draw_shades yes
# Draw outlines?
draw_outline no
# Draw borders around text
draw_borders no
draw_graph_borders no
# Stippled borders?
stippled_borders 1
# border margins
border_margin 1
# border width
border_width 0
# Default colors and also border colors
default_color 00539C
default_shade_color black
default_outline_color white
# own window options
own_window
yes
own_window_transparent
yes
own_window_type
override
own_window_hints
undecorated,below,sticky,skip_taskbar,skip_pager
own_window_argb_value 0
own_window_argb_visual yes
# Text alignment, other possible values are commented
#alignment top_left
alignment top_right
#alignment bottom_left
#alignment bottom_right
# Gap between borders of screen and text
# same thing as passing -x at command line
gap_x -100
gap_y 2
# Subtract file system buffers from used memory?
no_buffers yes
# set to yes if you want all text to be in uppercase
uppercase no
# number of cpu samples to average
# set to 1 to disable averaging
cpu_avg_samples 2
# number of net samples to average
# set to 1 to disable averaging
net_avg_samples 2
# Force UTF8? note that UTF8 support required XFT
override_utf8_locale yes
# Add spaces to keep things from moving about? This only affects certain objects.
use_spacer right
text_buffer_size 2048
# variable is given either in format $variable or in ${variable}. Latter
# allows characters right after the variable and must be used in network
# stuff because of an argument
# stuff after 'TEXT' will be formatted on screen
color0 1799F7
# Dark blue
color1 ffffff
# Light blue
TEXT
#${color0} Networking
#-------------------
${color0}${downspeed enp1s0}
#${color0}Total: ${color1}${totaldown enp1s0}S
##${color0} Up: ${color1}${upspeed enp1s0}
#${color0}Total: ${color1}${totalup enp1s0}
