display_rotate, display_hdmi_rotate etc -- nothing rotates hdmi display any more

[pinheadmz]

Just recently updated OS on a Pi4B 4GB model.

$ uname -a
Linux zippi 5.4.51-v7l+ #1327 SMP Thu Jul 23 11:04:39 BST 2020 armv7l GNU/Linux

I have this HDMI screen attached to HDMI port 0: https://www.ebay.com/itm/221952432326

I have always run this system headless, no GUI.

For some reason with a recent update I am unable to rotate the screen after trying all these options in /boot/config.txt:

display_rotate=2
display_hdmi_rotate=2
display_lcd_rotate=2
lcd_rotate=2
disable_fw_kms_setup=1

I'm seeing lots of forum posts about this:

https://raspberrypi.stackexchange.com/questions/82793/does-display-rotate-still-work
https://raspberrypi.stackexchange.com/questions/104073/display-rotate-not-working-in-raspberry-pi-64-bit
https://www.raspberrypi.org/forums/viewtopic.php?t=246146
...and several more.

I didn't see any open or closed issues after searching for display_rotate -- kinda stumped here. Any thoughts?

[JamesH65]

https://www.raspberrypi.org/documentation/configuration/display_rotation.md

[pinheadmz]

@JamesH65 Thank you sir!

Solution for me was adding this to the end of the line in /boot/cmdline.txt:

video=HDMI-A-1:800x480@60,margin_left=0,margin_right=0,margin_top=0,margin_bottom=0,rotate=180

[colesnicov]

@JamesH65 Thank you sir!

Solution for me was adding this to the end of the line in /boot/cmdline.txt:

video=HDMI-A-1:800x480@60,margin_left=0,margin_right=0,margin_top=0,margin_bottom=0,rotate=180

Hi team, yes 180°. But how about 90˚ or 270˚??

[colesnicov]

Hello people. I've been trying to figure out something similar for a few days now here raysan5/raylib#3958 .

I try to rotate the display by 90˚ or 270˚ degrees, but it only works 180˚. I'm starting to give up. Would anyone know?
EDIT: It is this display https://www.waveshare.com/wiki/7.9inch_HDMI_LCD#Working_with_Raspberry_Pi

[popcornmix]

Screen rotation by 90/270 can be handled from desktop where 3d hardware is used for composition.
There is no general solution for this when running outside of desktop.

[colesnicov]

Good. I know it. But how does the desktop do it? I know it's possible, I had a desktop installed on it, but I don't need a desktop. Because of the kiosk.. It might be possible, via openbox, but I don't have time for that right now. I am programming a 3D kiosk with a 2D GUI. The old goal. Classic...

[colesnicov]

I think, from what I have found, the desktop makes a composition before rendering, where it immediately rotates the image. And the desktop does not necessarily need to use 3D for this.