X11 at Raspberry Pi5

[vermaete]

The X11 was not working for my Raspberry Pi5 at master of meta-raspberrypi and meta-openembedded.

All credits for the the contributors of https://github.com/agherzan/meta-raspberrypi/issues/1426

@kraj @agherzan Please review this PR careful please.

[marcinkowskip]

I went through the #1426, and nothing from here was needed for pure EGL KMS case - I use Qt6. I had the same issue on Qt6 and #1426 helped me to solve that issue.

The only thing was needed from #1426 was Mesa update (I based on the description from the issue). Another thing is that there is PR !1395 which bumps Mesa above 24.2.8 mentioned in the #1426. Question is if !1395 fixes the rendering issues or not.

Things which I was not needed:

• https://www.raspberrypi.com/documentation/computers/config_txt.html#disable_fw_kms_setup says that for RPI5 the disable_fw_kms_setup is default 1
• max_framebuffers is legacy option - even used?
• VC4DTBO ?= "vc4-kms-v3d-pi5" not needed for me.

[kraj]

@vermaete please rebase it on latest master and push again.

[danielfdickinson]

Similar to @marcinkowskip I needed a mesa update - but in my case only for cm5 with I/O board. I did, however, need the xorg.conf.d snippet.

I did not need the other suggested changes with either a pi5 or cm5 with I/O board.