Local display function fails with HDMI in moOde 7.0.1

[pmartin]

Try Firefox to solve the Chromium memory bug
Note: this is only a try and is working with one Raspberry Pi 4B whith 2GB of RAM, an Allo Boss DAC Hat, Rotary encoder for volume with button for play/pause (mpc toggle) and a 3,5" HDMI display.

I checked Firefox-esr and this browser is not affected by the memory leak.
I checked for 2 days and still works stable.
Firefox includes a kiosk mode but does not use the whole screen when invoked from .xinitrc, leaving a vertical black border on the right and another one at the bottom of the screen.

When Firefox runs from a window manager it works right in kiosk mode filling all the diaplay. The lightest window manager I know is awesome.

I tested to start localui running awesome. In awesome config I put autostart of Firefox in kiosk mode.

To check  firefox  with the localui service:


Open a console and install Firefox:

Code:

sudo apt update
sudo apt-get install firefox-esr

Install the awesome window manager

Code:

sudo apt-get install awesome

Modify the .xinitrc to run awesome only

Code:

sudo nano /home/pi/.xinitrc

Comment with # chromium command and write as last line:
  
awesome
 
Type  CTRL+0 enter CTRLX to save and close nano editor

Modify /etc/xdg/awesome/awesome/rc.lua to start Firefox with the awesome session

Code:

sudo nano /etc/xdg/awesome/rc.lua

 Paste  this code at the end of file:

Code:

autorun = true
autorunApps =
{
  "/usr/bin/firefox-esr --kiosk --private-window http://localhost",
}
if autorun then
  for app = 1, #autorunApps do
      awful.util.spawn(autorunApps[app])
  end
end

Type  CTRL+0 enter CTRLX to save file and close nano editor

Test the new localui with Firefox typing:
sudo systemctl stop localui
sudo systemctl start localui

If Firefox show bookmarks or other tabs, stop localui and Firefox and just delete all files in folder /home/pi/.mozilla