Read the statement by Michael Teeuw here.
Black screen on HMDI output, content on remote browser
-
@sdetweil said in Black screen on HMDI output, content on remote browser:
lsb_release -a
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 10 (buster)
Release: 10
Codename: busterI am using ssh to remote into the pi
The following thread seems similar, but does not offer a solution
https://forum.magicmirror.builders/topic/17211/having-trouble-with-launch-perhaps-display-value?page=1 -
@chris_d interesting. I ssh into my mirror systems all the time and never have trouble.
do
pm2 stop all cd ~/MagicMirror npm start >somefile.txt 2>&1
wait til the black screen
ctrl-c in the ssh terminalthen nano somefile.txt, scroll down
see if there are any errors reported…the package.json will set DISPLAY if not set
-
@sdetweil said in Black screen on HMDI output, content on remote browser:
pm2 stop all
cd ~/MagicMirror
npm start >somefile.txt 2>&1Errors are:
[2883:0119/213451.321388:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
[2916:0119/213451.509005:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported. -
-
@sdetweil said in Black screen on HMDI output, content on remote browser:
export ELECTRON_DISABLE_GPU=1
No error now, but still a black screen
-
@chris_d on the black screen press ctrl-shift-i to open the developers window, then select the console tab and scroll up for any errors usually red text
-
I’m having what appears to be the same problem – HDMI is black (but apparently happy from the log output), while browser access is fine. I can’t get the dev tools to come up in Electron; perhaps unsurprisingly, the browser dev tools don’t show any errors that weren’t there on my old instance.
-
@MikeBishop are you also running on buster?
-
@chris_d try npm start dev to open dev window on startup
also can u try the npm start on the pi desktop, not over ssh?
-
Bullseye, looks like. Whatever’s in the newest RPi OS release, anyway.
For the moment, I’ve swapped back to the other SD card that’s working. System’s been a little flaky the last few days, figured I’d try a fresh install on a new card in case that’s starting to go; hit this issue on the new one. When I have a few minutes to pull the Pi from the mirror and bring it back to my desk, I’ll give
npm start dev
a try on the newer one.