<![CDATA[Raspberry Pi display not autostarting magic mirror]]>My Raspberry Pi isn’t autostarting Magic Mirror with the 7 inch display connected. It autostarts correctly when connected to a monitor however. Is there something in the pm2 script that I have to do?

]]>https://forum.magicmirror.builders/topic/17010/raspberry-pi-display-not-autostarting-magic-mirrorRSS for NodeFri, 04 Sep 2026 20:16:32 GMTFri, 22 Jul 2022 12:51:45 GMT60<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 16:36:52 GMT]]>@EphraimB I got it to work now. Thank you.

]]>https://forum.magicmirror.builders/post/103002https://forum.magicmirror.builders/post/103002Fri, 22 Jul 2022 16:36:52 GMT<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 17:53:06 GMT]]>@EphraimB what did u change?

]]>https://forum.magicmirror.builders/post/103005https://forum.magicmirror.builders/post/103005Fri, 22 Jul 2022 17:53:06 GMT<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 16:36:52 GMT]]>@EphraimB I got it to work now. Thank you.

]]>https://forum.magicmirror.builders/post/103002https://forum.magicmirror.builders/post/103002Fri, 22 Jul 2022 16:36:52 GMT<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 13:22:41 GMT]]>@EphraimB https://youtu.be/7VVcJsOaJJc

]]>https://forum.magicmirror.builders/post/102997https://forum.magicmirror.builders/post/102997Fri, 22 Jul 2022 13:22:41 GMT<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 13:10:49 GMT]]>@sdetweil

/home/ephraimb/.pm2/logs/mm-error.log last 15 lines:
0|mm       | [8401:0722/083808.387458:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
0|mm       | [8449:0722/083808.554707:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
0|mm       | [8410:0722/083808.663954:ERROR:command_buffer_proxy_impl.cc(126)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.
0|mm       | /home/ephraimb/MagicMirror/node_modules/electron/dist/electron exited with signal SIGINT
0|mm       | [8816:0722/083948.777454:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
0|mm       | [8860:0722/083948.944901:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
0|mm       | [8825:0722/083949.008201:ERROR:command_buffer_proxy_impl.cc(126)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.
0|mm       | /home/ephraimb/MagicMirror/node_modules/electron/dist/electron exited with signal SIGINT
0|mm       | [9539:0722/084423.587492:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
0|mm       | [9583:0722/084423.754159:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
0|mm       | [9546:0722/084423.836816:ERROR:command_buffer_proxy_impl.cc(126)] ContextResult::kTransientFailure: Failed to send GpuControl.CreateCommandBuffer.
0|mm       | /home/ephraimb/MagicMirror/node_modules/electron/dist/electron exited with signal SIGINT
0|mm       | [1692:0722/090756.740898:ERROR:viz_main_impl.cc(186)] Exiting GPU process due to errors during initialization
0|mm       | [1734:0722/090757.250763:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
0|mm       | /home/ephraimb/MagicMirror/node_modules/electron/dist/electron exited with signal SIGINT

^C
ephraimb@raspberrypi:~ $ echo $DISPLAY

ephraimb@raspberrypi:~ $
]]>https://forum.magicmirror.builders/post/102996https://forum.magicmirror.builders/post/102996Fri, 22 Jul 2022 13:10:49 GMT<![CDATA[Reply to Raspberry Pi display not autostarting magic mirror on Fri, 22 Jul 2022 13:00:44 GMT]]>@EphraimB when the 7 in is used open a terminal session ctrl-alt-t

and do

echo $DISPLAY

the line in package.json used for npm start, checks for DISPLAY set in the env, and if not uses :0

this is needed by x-windows

you might need to add

export DISPLAY=:?

to the installers/mm.sh, before the npm start line

where ? is the display number used for the 7in

]]>https://forum.magicmirror.builders/post/102995https://forum.magicmirror.builders/post/102995Fri, 22 Jul 2022 13:00:44 GMT