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I have an old VGA monitor (Xerox XM7-19w which has its prime resolution as 1440x900 (i.e. WXGA) at 60Hz. I've connected my recently purchased Pi 3 (and recently purchased sdcard with Rasbian on it) using a PiHut hdmi to vga converter without using the audio out as the monitor has no built in speakers and I only have usb speakers. Only my mouse & keyboard are connected by usb (directly to the Pi) and my internet is connected by ethernet cable.

Booting up is Ok (whether I have the monitor switched on before booting or after booting to Raspbian GUI). The monitor displays Ok but goes blank when I move the mouse. I can get the display on by powering it on and off but it happens again when I move the mouse. I've successfully installed Raspbian from the above mentioned sdcard and upgraded the software Ok, with lots of monitor switching off & on.

I've tried adding to the config.txt (just containing hdmi_force_hotplug=1) e.g. hdmi_ignore_edid=oxa5000080, hdi_drive=2, hdmi_group=2, hdmi_mode=47. But still no improvement.

  • How is it working with an other mouse (different product)? Same mouse on different USB port? – Fabian Apr 13 '18 at 13:04
  • @Fabian No change with same mouse on different USB port. – John Rose Apr 13 '18 at 14:11
  • No change with different mouse. I've tested the Pi with another VGA monitor and it's Ok with that. So problem is the monitor. – John Rose Apr 17 '18 at 6:08
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I've tested the Pi with another VGA monitor and it's Ok with that. So problem is the monitor.

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I don't think mouse will do anything with display, both should be unrelated. Is the mouse a wireless mouse, have you tried with a different HDMI to VGA adapter. Mainly check with a secondary display. For example a TV.

I don't think if the mouse is wired, it can mess up hardware. But I guess if your raspberry pi is not having enough power, it can turn off.

Check if the red led light is on and steady

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