Can't edit boot/config.txt

DarkWolf

Ok so what you have to do:

connect via ssh over network (you need a console for this, however you get to it)
type

sudo nano /boot/config.txt

Remove the # in front of

hdmi_force_hotplug=1

press ctrl+x, enter and than y,enter to save the file
restart your pie with

sudo reboot

if you get no output:
Remove the # in front of

hdmi_safe=1

as well and reboot

Now the hdmi port is forced to be activated and outputting at any time.
This diables composite output, but I guess you don't want to use it.

Hope that helps

bradleyhollander

Composit the yellow plug?

DarkWolf

@bradleyhollander yeah, I guess that was it

DarkWolf

One important thing left:
As the hdmi safe mode is disabled, it could happen that the pi overheats, so keep an eye on it ;-)

I found a great thread for this, so if you need more information you can probably look it up here.

bradleyhollander

@DarkWolf can I do this by editing the config.txt on the sd card

DarkWolf

@bradleyhollander the config.txt file is located on the boot partition of the sd card
you can find the config.txt file at the root

Edit:
Another addition:
First remove the # of

hdmi_force_hotplug=1

and try it out, if you get no output remove the # of

hdmi_safe=1

bradleyhollander

Should I rather get a Vga to composit converter ?

AlexMurphy

@bradleyhollander I'm sorry. I can't help you. I only use HDMI screens.

DarkWolf

@bradleyhollander The result with hdmi to vga will be be much better thatn composite to vga. If you use the composite video output it could output a really low resolution and the quality is kinda bad...
So try the hdmi "fix" and if this doesn't work at all, I would recoment using a hdmi screen more than using the composite output

bradleyhollander

Ok will do thx

edmaul69

Why are people saying to run in safe mode? I understand to troubleshoot but what you really need to do is set the vga to the correct settings for your monitor.

hdmi_group=2

and whatever hdmi_mode for whatever resolution your monitor is. For me my monitor is 1024x768 so mine is set to:

hdmi_mode=16

DarkWolf

@edmaul69 That could be a better solution! I just shared what I die some months ago when I had the same problem.

bradleyhollander

Could it be my power supply I use a Samsung 0.7 amp. will that power a rasp pi B

DarkWolf

@bradleyhollander You should use a power supply with a minimum of 1A (bare minimum). I would recomment using a 1,5A power supply.

bradleyhollander

That's probably my problem

bradleyhollander

@DarkWolf thanks for the help! do you think this was my problem?

edmaul69

@bradleyhollander that could be your issue. But if you are using an hdmi to vga addapter you still want to do what i mention.