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Trouble with HDMI - VGA adapter

by wilsonericn on Thu Mar 21, 2013 8:22 pm

I purchased a HDMI/VGA adapter, and I'm not able to get it to work.

I've tried with various monitors, and various VGA cables, and various config.txt settings.

In particular, I've tried:

hdmi_safe=1

and

hdmi_force_hotplug=1

and

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=16 # and 17 & 18

Each time I change the config.txt and reboot, the monitor wakes up, but never displays anything. (Unless connected via DVI).

What should I try? If you can get this working for me consistently (on various monitors) I'll likely order another 8 or so.
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Re: Trouble with HDMI - VGA adapter

by tetrode on Tue Apr 30, 2013 8:29 am

Try adaptor from Cable Experts - it works great :D
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Re: Trouble with HDMI - VGA adapter

by cwc1885 on Tue Apr 30, 2013 10:41 am

Does it work with a flat screen LCD?
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Re: Trouble with HDMI - VGA adapter

by adafruit_support_mike on Tue Apr 30, 2013 6:06 pm

As I mentioned in another thread (viewtopic.php?f=50&t=39473), this is an area where the RasPi sees a lot of edge cases. Try running:

Code: Select all | TOGGLE FULL SIZE
/opt/vc/bin/tvservice -d edid.dat
/opt/vc/bin/edidparser edid.dat

to see what information the RasPi gets from your display.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.
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Re: Trouble with HDMI - VGA adapter

by adafruit_support_mike on Tue Apr 30, 2013 6:46 pm

tetrode wrote:Try adaptor from Cable Experts - it works great :D

Just a heads-up: you're kind of walking the boundary between feedback and product spam.

I realize you've found a solution that works for you, you're enthusiastic about it, and that's great. A little searching here or in the Raspberry Pi forums will show that people get different results from the same adapter/config settings when connecting to different monitors though. Please be careful about posting one-size-fits-all solutions if you aren't in a position to give people refunds or support when they have trouble.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.
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