Trouble with HDMI - VGA adapter

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wilsonericn
 
Posts: 1
Joined: Fri Feb 08, 2013 7:22 am

Trouble with HDMI - VGA adapter

Post by wilsonericn »

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.

tetrode
 
Posts: 2
Joined: Tue Apr 30, 2013 9:17 am

Re: Trouble with HDMI - VGA adapter

Post by tetrode »

Try adaptor from Cable Experts - it works great :D

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1885
 
Posts: 94
Joined: Sun May 24, 2009 2:12 am

Re: Trouble with HDMI - VGA adapter

Post by 1885 »

Does it work with a flat screen LCD?

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adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Trouble with HDMI - VGA adapter

Post by adafruit_support_mike »

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

Code: Select all

/opt/vc/bin/tvservice -d edid.dat
/opt/vc/bin/edidparser edid.dat
to see what information the RasPi gets from your display.

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adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: Trouble with HDMI - VGA adapter

Post by adafruit_support_mike »

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.

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