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Maximum resolution for VGA/SVGA setting
Posted: Sun Mar 16, 2014 1:31 am
by lilzz
I do not have hdmi and so if I want maximum resolution for VGA monitor what's setting I should use?
hdmi_group=1
hdmi_mode=16
Also why there's a hdmi_ in front for via setting? I do not have hdmi.
Re: Maximum resolution for VGA/SVGA setting
Posted: Sun Mar 16, 2014 1:54 am
by mahjongg
because you (should) use a HDMI to VGA converter, so the PI still just generates HDMI signals.
See
http://elinux.org/RPi_config.txt for video settings in config.txt
Re: Maximum resolution for VGA/SVGA setting
Posted: Sun Mar 16, 2014 5:04 am
by lilzz
mahjongg wrote:because you (should) use a HDMI to VGA converter, so the PI still just generates HDMI signals.
See
http://elinux.org/RPi_config.txt for video settings in config.txt
OK, I changed hdmi_group=2, hdmi_mode=35 1280x1024 60Hz
but resolution stays the same. It didn't change.
Re: Maximum resolution for VGA/SVGA setting
Posted: Sun Mar 16, 2014 5:33 am
by Jessie
I don't know if its a firmware bug but all I get with any selection in hdmi_group=2 is 640x480
Re: Maximum resolution for VGA/SVGA setting
Posted: Sun Mar 16, 2014 9:12 am
by FTrevorGowen
Jessie wrote:I don't know if its a firmware bug but all I get with any selection in hdmi_group=2 is 640x480
To some extent it depends what DDC info. (if any) is passed back from the monitor/TV's VGA input through the HDMI-to-VGA converter e.g.:
http://www.cpmspectrepi.webspace.virgin ... GA_Monitor
and some VGA or KVM switches (or their cables) don't connect to the DDC output at all:
http://www.cpmspectrepi.webspace.virgin ... tches.html
Trev.