Knowledge Base (Posts about trayicon)

Found! Oneliner for nvidia display settings

bgstack15 — Sat, 09 Dec 2023 13:53:30 GMT

tl;dr

I finally found a oneliner method for controlling which monitors are actively used for my NVIDIA graphics card after using it for years. Xrandr doesn't cut it when using nvidia.

nvidia-settings --assign "CurrentMetaMode=DPY-4: nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DPY-1: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}"

Of course the exact settings depend on your setup. You need all the contents after the colons, ::, from this command:

$ nvidia-settings -q CurrentMetaMode

  Attribute 'CurrentMetaMode' (pcb-009:0.0): id=50, switchable=no, source=nv-control :: DPY-4: nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DPY-1: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}

That's it. I've pondered this ease of use for years, and had actually started an xdotool wrapper but one final Internet search led to this great discovery.

File listings

I of course wrote a script that takes a limited input, "both" or "right" to use those monitors.

files/2023/12/listings/switch-monitors.sh (Source)

#!/bin/sh
# File: switch-monitors.sh
# Location: /usr/local/bin
# Author: bgstack15
# SPDX-License-Identifier: GPL-3.0
# Startdate: 2023-12-05-3 16:15
# Title: Switch monitor config for NVIDIA graphics card
# Purpose: easily switch between 1 monitor and 2 monitors on pcb-009.
# History: attempt 2. The first was attemping to read nvidia-settings -q dpys and parsing enabled/connected, but I didn't know how to use the derived values
# Usage: Called by tray icon
# Reference:
#    https://wiki.archlinux.org/title/NVIDIA#Using_nvidia-settings
# Improve:
# Documentation:
#    Configure `nvidia-settings` as desired. Print metamode value with following command.
#    nvidia-settings -q CurrentMetaMode
#    Use everything after the `::`

test -z "${DESIRED}" && test -n "${1}" && DESIRED="${1}"
desired="$( echo "${DESIRED}" | tr 'A-Z' 'a-z' )"
case "${desired}" in
   "both"|"left+right"|"left,right","double")
      echo "Using both monitors."
      nvidia-settings --assign "CurrentMetaMode=DPY-4: nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DPY-1: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}"
      ;;
   "one"|"right"|"single")
      nvidia-settings --assign "CurrentMetaMode=DPY-4: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}"
      ;;
   *) echo "Unknown option: ${desired}. Aborted." ;
      exit 1 ;
      ;;
esac

And then I wrote a tray icon so it's easy to get to these.

files/2023/12/listings/switch-monitors-trayicon.sh (Source)

#!/usr/bin/env sh
# File: switch-monitors-trayicon.sh
# Location: /usr/local/bin
# Author: bgstack15
# SPDX-License-Identifier: GPL-3.0
# Startdate: 2023-12-05-3 16:29
# Title: Trayicon for switching monitor config
# Purpose: Provide easy drop-down for pcb-009 for monitor control
# History:
# Usage:
# Reference:
#    Heavily ripped keyboard-leds-trayicons
# Improve:
#    There is no loop, so manually touching the kill file does not stop the process like it should.
# Dependencies:
#    raw: mktrayicon, awk, switch-monitors.sh
#    devuan: mktrayicon, mawk | gawk, x11-xserver-utils

# CONFIG FILES
test -z "${SWITCH_MONITORS_CONF}" && SWITCH_MONITORS_CONF="${HOME}/.config/switch-monitors.conf"

# FUNCTIONS

get_conf() {
   # Ripped from framework.sh
   # call: get_conf "${conffile}"
   local _infile="$1"
   local _tmpfile1="$( mktemp )"
   sed -e 's/^\s*//;s/\s*$//;/^[#$]/d;s/\s*[^\]#.*$//;' "${_infile}" | grep -viE "^$" | while read _line ;
   do
      local _left="$( echo "${_line}" | cut -d'=' -f1 )"
      eval "_thisval=\"\${${_left}}\""
      test -z "${_thisval}" && echo "${_line}" >> "${_tmpfile1}"
   done
   test -f "${_tmpfile1}" && { . "${_tmpfile1}" 1>/dev/null 2>&1 ; }
   /bin/rm -rf "${_tmpfile1}" 1>/dev/null 2>&1
}

clean_switch_monitors_trayicon() {
   { test -e "${switch_monitors_icon}" && echo "q" > "${switch_monitors_icon}" ; } 1>/dev/null 2>&1 &
   sleep 1 && rm -f "${switch_monitors_icon}" "${SMT_KILLFILE}"
}

# LOAD CONFIGS
# order is important! The last one called gets precedence.
# instead of simply dot-sourcing the conf file, pass it to get_conf which only applies new values, so this process's environment is preserved
for thisconf in "${SMT_CONF}" "${SMT_USER_CONF}" "${SMT_GLOBAL_CONF}" ;
do
   test -r "${thisconf}" && get_conf "${thisconf}"
done

# DEFAULTS in case configs did not have these values
test -z "${SMT_ICON}" && SMT_ICON=display
test -z "${SMT_KILLFILE}" && SMT_KILLFILE="/tmp/kill-all-switch-monitors-trayicons"

# INITIALIZATION

switch_monitors_icon="/var/run/user/$( id -u )/${$}.switch_monitors.icon"

mkfifo "${switch_monitors_icon}"
mktrayicon "${switch_monitors_icon}" &
{
   echo "i ${SMT_ICON}"
   echo "t pcb-009 easy display settings"
   echo "m right,switch-monitors.sh right|both,switch-monitors.sh both|-----|quit,echo 'q' > ${switch_monitors_icon} ; touch "${SMT_KILLFILE}""
} > "${switch_monitors_icon}"

rm -f "${SMT_KILLFILE}"

trap 'trap "" 2 ; touch "${SMT_KILLFILE}" '  2 # CTRL-C
wait %1

# safety shutoff
clean_switch_monitors_trayicon

References

Weblinks

NVIDIA - ArchWiki#Using_nvidia-settings

Arandr-trayicon

bgstack15 — Wed, 07 Dec 2022 14:29:45 GMT

I use fluxbox window manager, and a set of small/minimal applications to make my desktop experience. I wrote a small utility that facilitates changing which displays are enabled. It of course sits in the system tray, and uses arandr as a base program.

Arandr saves configurations to ~/.screenlayout, so this project arandr-trayicon (which is entirely unrelated to arandr itself) reads that directory, as well as /etc/screenlayouts, to list any existing configs on a menu for the tray icon.

Obviously this program is not necessary if you are using a full DE like XFCE.

I don't have any packaging recipe for it yet, but eventually I will add a debian/ build recipe.

Quick tray icon for wireguard

bgstack15 — Tue, 28 Dec 2021 14:24:25 GMT

I have been setting up more and more wireguard endpoints for myself. On the most recent, I actually have a desktop environment. I want to control the vpn status from the graphical environment. I use Devuan Ceres and they dropped wicd just like Debian Sid did. I switched over to ConnMan, and so I investigated connman-vpn, but it doesn't have anything to do with wireguard, at least not the version in Ceres. Debian Sid's connman version is 1.36-2.3, and a quick Internet search shows that ConnMan supports wireguard starting with 1.38.

So I wrote a quick and dirty shell script utility that uses mktrayicon. I chose some very simple icons, stylized lower- and upper-case letter "V." I got the icons under a linkware license: https://visualpharm.com/free-icons/v-595b40b65ba036ed117d4d2e.

Here's my file /usr/local/bin/vpn-trayicon

#!/bin/sh
# Startdate: 2021-12-26 21:10
# Reference: keyboard-leds-trayicons
# Documentation:
#    for some stupid reason sudo /usr/local/bin/vpn-on doesn't work, so I just use the real commands here.

clean_vpn_trayicon() {
   { test -e "${vpn_trayicon}" && echo "q" > "${vpn_trayicon}" ; } 1>/dev/null 2>&1 &
   sleep 1 && rm -f "${vpn_trayicon}" "${vpn_KILLFILE}"
}

export vpn_trayicon="/var/run/user/$( id -u )/${$}.vpn.icon"
export vpn_KILLFILE=/tmp/kill-all-vpn-trayicons

test "ON" = "ON" && {
   mkfifo "${vpn_trayicon}"
   mktrayicon "${vpn_trayicon}" &
   echo "m Turn vpn on,sudo wg-quick up wg0|Turn vpn off,sudo wg-quick down wg0|quit,echo 'q' > ${vpn_trayicon} ; touch \"${vpn_KILLFILE}\"" > "${vpn_trayicon}"
   echo "i networkmanager" > "${vpn_trayicon}"
}

rm -f "${vpn_KILLFILE}"

trap 'trap "" 2 ; touch "${vpn_KILLFILE}" '  2 # CTRL-C

while ! test -e "${vpn_KILLFILE}" 2>/dev/null ;
do
   ip -o a s wg0 1>/dev/null 2>&1 ; status_now=$? ;
   if test "${status_now}" != "${status_old}" ;
   then
      test -p "${vpn_trayicon}" && case "${status_now}" in
         0) # vpn is on now
            test -n "${VPN_DEBUG}" && echo "vpn is on (icon file ${vpn_trayicon})" 1>&2
            echo "i /usr/local/share/vpn-on.svg" > "${vpn_trayicon}"
            echo "t vpn is on" > "${vpn_trayicon}"
            ;;
         1) # vpn is off now
            test -n "${VPN_DEBUG}" && echo "vpn is off (icon file ${vpn_trayicon})" 1>&2
            echo "i /usr/local/share/vpn-off.svg" > "${vpn_trayicon}"
            echo "t vpn is off" > "${vpn_trayicon}"
            ;;
      esac
   fi
   status_old="${status_now}"
   sleep 1
done

# safety shutoff
clean_vpn_trayicon

So when I right-click the icon, I can choose "vpn on", "vpn off", or "quit". That's about it.