Bash script for KDeplasma login.

Neljor · 04-01-2021, 04:15 PM

Dear people,
Created a script to be executed at KDE login, the script works fine after login but cannot be executed at login (autostart), likely because pulse is not loaded completely yet.

Do you have any advice on this?
Thanks in advantage!

Code:

FILE="/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.2/interface"
SCARLETT="Scarlett 2i2 USB"

test -f "$FILE" && head -n 1 "$FILE" | while read -r name
        do
         if  [ "$name" = "$SCARLETT" ]; then
        pacmd load-module module-remap-source source_name=mono master=alsa_input.usb-Focusrite_Scarlett_2i2_USB_Y81V7690CABC66-00.analog-stereo master_channel_map=front-left,front-right channel_map=mono,mono
        fi
       done

exit 0

frankbell · 04-02-2021, 07:31 PM

You could add a sleep command at the top of the script to delay execution until Plasma is fully loaded. See man sleep for more.

MadeInGermany · 04-03-2021, 08:27 AM

Perhaps with 3 delayed attempts:

Code:

FILE="/sys/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.2/interface"
SCARLETT="Scarlett 2i2 USB"
for trial in 1 2 3
do
  sleep 2
  if
    test -f "$FILE" &&
    read -r name &&
    [ "$name" = "$SCARLETT" ]
  then
    pacmd load-module module-remap-source source_name=mono master=alsa_input.usb-Focusrite_Scarlett_2i2_USB_Y81V7690CABC66-00.analog-stereo master_channel_map=front-left,front-right channel_map=mono,mono
    break
  fi
done

exit 0