Pi 4 Change screen Resolution

[cobash]

Hello!

I noticed with the newer update you can not specify in the config a screen resolution for the pi 4. I tried to set it in the template but it still won't change. Here is what I had. display=1600x900; HDMI


Thanks!

[akatik]

You can never specify screen resolution in wtware config for pi 4. display= option only works for x86. WTware on Pi ignores display=.

The best way to set screen resolution is to use good digital display and direct digital cable. hdmi-hdmi or hdmi-dvi. Not Display Port adapter. Not ancient 15-pin VGA. With good display and direct digital cable, Pi sets resolution automagically and you may not think about it.

On Raspberry, wtware always lets Raspberry firmware to set resolution. With the newer update, "vc4-kms-v3d" raspberry driver is used. Google "vc4-kms-v3d". It's from raspberry world, wtware makes no changes.

To set resolution with "vc4-kms-v3d", cmdline.txt file is used. Note cmdline.txt is single line file!

By default, cmdline.txt in wtware for SD boot is:

Code: Select all

console=tty1 quiet wtboot=mmc

To set resolution:

Code: Select all

video=HDMI-A-1:1280x1024-32@60 console=tty1 quiet wtboot=mmc

For two displays:

Code: Select all

video=HDMI-A-1:1280x1024-32@60 video=HDMI-A-2:1920x1080-32@60 console=tty1 quiet wtboot=mmc

[cobash]

Thank you!!

[cobash]

One more thing I ran into. I used to be able to set the display mode (Portrait or landscape) from the GUI M2_display = portrait but now that has stopped working. The M2_position = right-bottom still works. Any Idea how to get the monitor to rotate to portrait mode?

I Tried video=HDMI-A-1:rotate=90 and it did not work.
I Tired video=HDMI-A-1:rotate=180 and it DID work.

Thank you in advance!

[akatik]

video= in kernel command line is an option for video driver in kernel.

rotate=180 is easy. It's still pixel by pixel, but in reverse direction.

rotate=90 (or =270) is much more complicated. To render one line in 1920x1080, hardware should take first pixel, then 1080th pixel, then 2*1080th pixel and so on. Not pixel by pixel. Seems it's no implemented by Raspberry hardware.

I used to be able to set the display mode (Portrait or landscape) from the GUI M2_display = portrait but now that has stopped working.

M2_display tries to implement rotation in software (and make all painting several times slower). But I'm wondering it was working on Raspberry. Could you make me a log of previous wtware version with M2_display = portrait working?

[cobash]

I just set support@wtware.com an email with the log file.

Thanks!

[aka]

Rotation should work in 6.2.44 wtware version. Manual: https://wtware.com/docs5/video.html#raspberry