Raspberry PI Kiosk does not detect plugged in display

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I have many Raspberry PIs setup as Kiosks. I install Raspberry Lite Debian version, then install openbox and use autostart script to run chromium. It all works great "if" the display is plugged in and on when the PI starts up. If the display is turned on after the PI is already on the PI does NOT automatically connect to it. Is there a Linux package I need to install to auto connect to display? Or maybe a udev script?

Thanks.

asked Oct 22 at 13:53

Peter Quiring

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Thanks.

asked Oct 22 at 13:53

Peter Quiring

1167

add a comment |

up vote
0
down vote

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Thanks.

asked Oct 22 at 13:53

Peter Quiring

1167

Thanks.

linux debian xorg raspberry-pi openbox

asked Oct 22 at 13:53

Peter Quiring

1167

asked Oct 22 at 13:53

Peter Quiring

1167

asked Oct 22 at 13:53

Peter Quiring

1167

asked Oct 22 at 13:53

Peter Quiring

1167

asked Oct 22 at 13:53

Peter Quiring

1167

add a comment |

1 Answer
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I found a simple solution. On the Raspberry PI you can edit options in /boot/config.txt

hdmi_force_hotplug=1

This will enable hot plugging HDMI but this only detects 656 x 416 resolution which can be fixed with:

hdmi_group=1

hdmi_mode=16

Available modes are available here :

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

The only drawback is that this forces the video mode to one mode so if you swap the TV/monitor and the new display does not support the video mode you will have troubles changing it.

answered Dec 3 at 14:46

Peter Quiring

1167

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

accepted

I found a simple solution. On the Raspberry PI you can edit options in /boot/config.txt

hdmi_force_hotplug=1

This will enable hot plugging HDMI but this only detects 656 x 416 resolution which can be fixed with:

hdmi_group=1

hdmi_mode=16

Available modes are available here :

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

The only drawback is that this forces the video mode to one mode so if you swap the TV/monitor and the new display does not support the video mode you will have troubles changing it.

answered Dec 3 at 14:46

Peter Quiring

1167

add a comment |

up vote
0
down vote

accepted

I found a simple solution. On the Raspberry PI you can edit options in /boot/config.txt

hdmi_force_hotplug=1

This will enable hot plugging HDMI but this only detects 656 x 416 resolution which can be fixed with:

hdmi_group=1

hdmi_mode=16

Available modes are available here :

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

The only drawback is that this forces the video mode to one mode so if you swap the TV/monitor and the new display does not support the video mode you will have troubles changing it.

answered Dec 3 at 14:46

Peter Quiring

1167

add a comment |

up vote
0
down vote

accepted

I found a simple solution. On the Raspberry PI you can edit options in /boot/config.txt

hdmi_force_hotplug=1

This will enable hot plugging HDMI but this only detects 656 x 416 resolution which can be fixed with:

hdmi_group=1

hdmi_mode=16

Available modes are available here :

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

The only drawback is that this forces the video mode to one mode so if you swap the TV/monitor and the new display does not support the video mode you will have troubles changing it.

answered Dec 3 at 14:46

Peter Quiring

1167

I found a simple solution. On the Raspberry PI you can edit options in /boot/config.txt

hdmi_force_hotplug=1

This will enable hot plugging HDMI but this only detects 656 x 416 resolution which can be fixed with:

hdmi_group=1

hdmi_mode=16

Available modes are available here :

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

The only drawback is that this forces the video mode to one mode so if you swap the TV/monitor and the new display does not support the video mode you will have troubles changing it.

answered Dec 3 at 14:46

Peter Quiring

1167

answered Dec 3 at 14:46

Peter Quiring

1167

answered Dec 3 at 14:46

Peter Quiring

1167

answered Dec 3 at 14:46

Peter Quiring

1167

add a comment |

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