Pi4 with vertical screen orientation - newest advice?

[bluecoffee]

I'm running Retropie on an arcade setup, and I want to run a vertically oriented VGA screen with a Raspberry Pi 4. It's not clear to me what the latest correct advice is on how to do this.

I have tried updating my /boot/config.txt file with 'display_rotate=1' but this does nothing.

In EmulationStation's latest updates, it says "NEW FEATURE: Rotate Screen support"

https://retropie.org.uk/docs/EmulationStation-Changelog/?h=rotate

But clicking through to the github link
https://github.com/RetroPie/EmulationStation/pull/348

Suggests that I should be modifying the file autostart.sh.

Is this correct?

Could someone outline the steps that need to be taken in 2022 using a Raspberry Pi 4.
There also seem to be lots of conflicting questions about

1. Does this only affect Emulation Station, but not the actual games themselves?
2. Does this cause a performance hit like the old method did?
3. Do I need to modify each emulator to run vertically as well? If so, could someone point me to a good resource for this.

Many thanks - tech details below:

Pi Model or other hardware: Pi 4B
Power Supply used: (If using a Pi): Official Raspberry Pi 4 PSU
RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest): 4.8
Built From: (Pre made SD Image on RetroPie website, Berryboot, or on top of existing OS etc.. - please provide the filename of any image used): Premade SD Image for Pi 4 retropie-buster-4.8-rpi4_400.img.gz
USB Devices connected: Keyboard, j-pac adaptor
Controller used: Arcade control board via j-pac, and keyboard, and bluetooth PS4 controllers eventually
Error messages received: NA - screen is horizontal
Verbose log (if relevant):
Guide used: (Mention if you followed a guide): https://retropie.org.uk/docs/EmulationStation-Changelog/?h=rotate
File: (File with issue - with FULL path) NA
Emulator: (Name of emulator - if applicable) NA
Attachment of config files: (PLEASE USE PASTEBIN.COM FOR LARGE LOGS) NA
How to replicate the problem: NA

[mitu]

@bluecoffee said in Pi4 with vertical screen orientation - newest advice?:

Suggests that I should be modifying the file autostart.sh.
Is this correct?

Yes.

Could someone outline the steps that need to be taken in 2022 using a Raspberry Pi 4.
There also seem to be lots of conflicting questions about

Does this only affect Emulation Station, but not the actual games themselves?

Yes.

Does this cause a performance hit like the old method did?

For EmulationStation, not so much.

Do I need to modify each emulator to run vertically as well?

Yes, though for RetroArch you can change the main configuration and it will be applied to each core.

See this topic for a similar question and some recommendations on how to rotate the screen.