binhoker wrote: ↑
Sat Jan 13, 2018 7:36 pm
the monitor is a samsung syncmaster 940 lcd tv moitor... raspian stretch and ubuntu mate both work exactly the same the boot up i get a 1sec glimpse of the desk top and then black. video works with CLI. i am now gona blame the monitor which i got specially for this project as i didnt have any thing with a hdmi in.
Unless the monitor is defective, I would say that's not your problem. I've had a Samsung Syncmaster 940 on my Pi3 for the past year or so without any issues. It works great, actually.
iam using a hdmi cable whit a dvi adapter in the end.
This is more likely the source of your problem. I have used HDMI-DVI adapters successfully, but I have seen a lot of posts on these forums from people who have had trouble with them. Unfortunately both HDMI cables and those adapters can vary in quality a lot. I have 2 HDMI-DVI adapters. One is Monster Cable brand (given to me by a rep), the other is a no-name ebay adapter that looks like this:
Try adding config_hdmi_boost=7 to your config.txt file, and increase it to a higher value if that doesn't work (up to 11).
my power supply is a no name 5v 2a it has a fairly decent cable hard wired. have tried several other usb power supplies and leads with similar specs. but not a branded or pi specific one.
5V/2A should be enough for a Pi3 for most normal use. The recommended PSU is 2.5A, but that would only be needed for a fully loaded Pi3 (running hard with power hungry USB devices). However, many so called 5V power supplies are actually just phone chargers, which can have poor voltage regulation and not maintain 5V under load. I have a 5V/2.4A charger that dips well below 5V at only a 1A load. Most phones will charge fine at 4.5V, but that won't run a Pi3.
Have you noticed any blinking or flickering of the red power LED? If so, then you definitely have a power problem. A bright steady red LED is what you should see with good power, but the LED won't react to fast transients, so a steady power LED is not a guarantee of good power.
this looks now more like a hard ware problem than soft ware. intrestingly the first time i pluged the pi in it worked perfectly and i was exited by the possibilties. after an hour i shut it down buy pulling the cord (i have since read this is a bad tecnique) next day i was in the dark.
Pulling power without a proper shutdown could corrupt the software on the SD card, but it won't damage the Pi hardware.
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?