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I have very interesting problem when i plug my HDMI to my monitor. It shows "No Signal" and I don't know from what is coming. Hope somebody know an resolve for this issue and answer me. First when I bought it, I installed rasbian lite and monitor worked, then i decided to reinstall the raspberry , but second time it says " no signal", I tryed to headless start and worked. Also before second reinstall I decided to change my raspberry case and added new one with fan which I connected to the GPIO pins, but finally I decided to use the normal case for now, because temperature was good and when I tryed to plug HDMI , this happened. Also I don't have micro hdmi to hdmi I use Micro HDMI Adapter, to connect it but i don't know how first time it works and second time doesn't work. I think something limits the Voltage coming from the HDMI port and can't be powered or something other. I tryed with hdmi_safe 1 // hdmi_force_hotplug=1 // config_hdmi_boost=4 // hdmi_group=2 and still no result. Hope somebody helps me. I'll be very glad.

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I fix the problem with new cable without adapter, but much smaller than my old cables, I think when your cable is long, the power supply won't work. Also keep in mind that the hdmi cable need to be plugged, before you plug power cable.

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I've faced the same problem before and managed to solve it by doing the following:

  1. Connect the pi to an HDMI monitor by using micro HDMI-HDMI cable.
  2. Power up the pi using at least a 2.1A adapter

If this didnt solve the issue, try to flash a clean raspbian to the SD card once more.

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  • I already reinstall it like 2-5 times, so you think its from the hdmi adapter ? Because its actually new one i think the voltage is low to power this adapter and go through the cable. – martink1337 May 6 at 0:59
  • I would suspect the HDMI adapter to be the issue because I have bad experience with them, especially cheap ones. Try using an actual micro HDMI cable – snowmanolaf May 6 at 2:15

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