When using an HDMI to VGA adapter, converter, or adapter converter (in particular when using this one found on Amazon.com), should I use the setting for CEA (hdmi_group=1) or DMT (hdmi_group=2)? More information about config.txt and CEA and DMT can be found here.
TV screens and monitors I have:
- Dell E178WFPc VGA monitor
- Samsung LN40A550P3FXZA HDTV with HDMI, Composite Video, Component Video Y/Pb/Pr, and VGA (which is what I am trying to use)
Philips BDL4221V/27 LCD VGA 42" TV Screen - Optimum resolution: 1360 x 768 @ 60Hz, highest number video format: 1080i
I will be using the Tendak HDMI to VGA cable (amazon.com/Tendak-Converter-External-Projector-Supporting/dp/B00P6GSL54) with the Philips VGA TV screen.
Toshiba HDTV screen with 4 HDMI ports and a VGA port (which is what I am trying to use)
- Another VGA TV screen (may be Samsung and may be High Definition)
I ask this question because I saw at elinux.org/RPi_VerifiedPeripherals under Display Adapters,
and then under HDMI->VGA converter boxes,
and then under HDMI to VGA adapter from amazon - USA,
After "The adapter is very compact and low-power, unlike some of the other adapters. My ViewSonic VA702b monitor required:",
it says "hdmi_group=2 -- indicates VGA".
I am also curious why "hdmi_group=2" indicates VGA.
So if I have an HDTV screen (or just a TV Screen) with VGA, I would think to use hdmi_group=1,
and if I have a computer monitor with VGA, I would think to use hdmi_group=2.
Any help would be appreciated. Thank you.