I have recently updated and rebuilt my MM installation.
I can browse to my MM via a remote web browser and things display fine, however on the HDMI output of the PI itself I just have a black screen.

In the logs I see,

[1502:0115/164948.881957:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
[1538:0115/164949.052412:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
[1507:0115/164949.107262:ERROR:command_buffer_proxy_impl.cc(128)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.

I wonder if anyone might be able to point me in the right direction.

I’ve written my own module to display a set of family tasks which rotate each week.
Once I’ve done some javascript to build a string of HTML, I display with.

        var element = document.createElement("div")
        element.className = "myContent
        element.innerHTML = output;
        return element

I just want to format this element with an existing magic mirror class so that the text doesn’t look massive and out of place, say “title” for example. But I can’t work out how to actually achieve that.

@MikeBishop I’m running MMM-Calendar3 and the default modules only.

@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

@sdetweil said in Black screen on HMDI output, content on remote browser:

pm2 stop all
cd ~/MagicMirror
npm start >somefile.txt 2>&1

Errors 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:

lsb_release -a

Distributor ID: Raspbian
Description: Raspbian GNU/Linux 10 (buster)
Release: 10
Codename: buster

I 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

@sdetweil I am running the full desktop. yes.
This used to work but following a Magic Mirror and pi system update it no longer does.
I can see the desktop on boot up, but when pm2 runs the mirror then I get the blank screen.

@sdetweil
The platform failed to initialize.Missing X server or $DISPLAY

does electron window come up?

No. I get ./node_modules/.bin.electron: No such file or directory

@sdetweil That didn’t seem to work. It did eliminate any errors on startup, but the screen remainis blank.
the command to start in mm.sh is

DISPLAY=:0 npm start

I have recently updated and rebuilt my MM installation.
I can browse to my MM via a remote web browser and things display fine, however on the HDMI output of the PI itself I just have a black screen.

In the logs I see,

[1502:0115/164948.881957:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
[1538:0115/164949.052412:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
[1507:0115/164949.107262:ERROR:command_buffer_proxy_impl.cc(128)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.

I wonder if anyone might be able to point me in the right direction.