Display stopped working with VGA to HDMI adapter - Raspberry Pi Forums

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i have 17 rpi stations set using vga hdmi adapters in classroom. noticed 3 of them today had lost video signal monitor, , can not come back. works when plug hdmi display no problem, monitors vga , have use adapters which, until today have worked no problem. have tried changing every setting related hdmi in config.txt file no success. did have 1 of pis start working again after booting in standard hdmi connection (my classroom projector). there else can try without having reload raspbian (this fixed same issue when had last year personal rpi). appreciate this

have tried exchanging working hdmi-vga adapter non-functioning adapter? did hdmi-vga adapters from? try swapping power supplies while ar @ it.


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