Force 800x600 [solved]

[davorin]

Good afternoon (o;

I try to bring some light on a 800x600 display with a HDMI2RGB converter...

As from the Wiki the settings in config.txt should be:

Code: Select all

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=9

Rebooting then and do a "/opt/vc/bin/tvservice -s" shows still:

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state 0x120016 [DVI  RGB lim 16:9], 1280x720 @ 60Hz, progressive

Is this the correct behavior?

[dom]

Good afternoon (o;

I try to bring some light on a 800x600 display with a HDMI2RGB converter...

As from the Wiki the settings in config.txt should be:

Code: Select all

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=9

Rebooting then and do a "/opt/vc/bin/tvservice -s" shows still:

Code: Select all

state 0x120016 [DVI  RGB lim 16:9], 1280x720 @ 60Hz, progressive

Is this the correct behavior?

Yes, if your monitor's edid reports that 800x600 is not a valid mode. Try also adding:
hdmi_ignore_edid=0xa5000080

[davorin]

Yes, that line definitively helped:

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 hdmi_ignore_edid=0xa5000080

The rest was some crappy FPC50 connector (o;

Now for the final design of the HDMI2RGB converter (o;

[davorin]

Just have here a Chinese 8" HDMI screen with touchscreen, which totally ignores above lines...

Any other ideas to force it to 800x600?

It always defaults to 1280x720@60Hz

[dom]

Just have here a Chinese 8" HDMI screen with touchscreen, which totally ignores above lines...

Any other ideas to force it to 800x600?

It always defaults to 1280x720@60Hz

The display can't force the pi to output 1280x720. It sounds like there's a problem with config.txt file.

What does:

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vcgencmd get_config int
tvservice -s

report?

[davorin]

vcgencmd get_config int:

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arm_freq=800
hdmi_mode=9
hdmi_group=2
hdmi_force_hotplug=1
hdmi_ignore_edid=0xa5000080
temp_limit=85
force_pwm_open=1

tvservice -s:

Code: Select all

state 0x120016 [DVI CEA (4) RGB lim 16:9], 1280x720 @ 60Hz, progressive

Sorry for late response...was testing another HDMI touchscreen monitor with 800x480 meanwhile