Working on a new kernel and a bloatware-free ready to use Arch install

oberdfr

Hi guys,
I am working on a new kernel wich will be open source and buildable by anyone.
Features are:
Bleeding edge kernel: currently 6.17.1 but i am going to upstream when the final release happens.
Cachyos patches: This release is 1:1 identical to the cachyos kernel that is shipped on x86 PCs, with BORE sched and allat
Blackscreen fixes: a few patch that should fix the black screen issue on some monitors have been merged.
Initial custom resolution support: until now, the ps4 drm bridge driver was written to run on those CEA modes (standard modes) [1080p60, 720p60, 480p60]. this means that we could only use the resolutions that were there on Orbis OS, but now, after a lot of time spent on this, i added a preliminary support to custom display modes. this means that we now can run every resolution we want, up to 1080p120hz (for now). Note that this is still a extremely preliminary support to this and i do not have enough knowledge to complete it without help or without a lot of extra work.
All the older ps4 patches have been merged obviously.

I am also working on a bloatware free arch install, with latest mesa(25.3.0-devel, fetched today from mesa git with the newest possible patches) and the latest libdrm (2.4.126).

I'm posting this to seek for help with this project and possibly to also help others, like a community should do.
I'm also adding some screenshots to showcase a little bit.

Also, here's all the updated sauce for anyone interested:
https://github.com/oberdfr/kernel-ps4linux/tree/ps4-linux-v6.17.1-custom-resolution
https://github.com/oberdfr/mesa-ps4linux
https://github.com/oberdfr/libdrm-ps4linux

Hig

oberdfr can you release a already Compiled BzImage version.

for us dont know or don't want to compile
🙂👍

Random-Kafk

oberdfr This is awesome . Just after finishing my last project on ps4-linux, I was thinking of tackling the EDID communication/DDC element problems.

So that the few unsupported monitors with uncommon supported display modes would work on the PS4 as well.

However my PS4 has recently been retreated from action, due to a broken fan (I think so, so far at least). So I can't do much testing.

But I'm flad to see someone else also working on it, and doing it in a good way. I'll definitely check out the commits later and let you know if I have anything to add!

Great work.

Thanks noob404 for the mention!

DionKill

oberdfr Awesome stuff! I'm not a kernel or mesa developer, but you can check out some Discord servers with developers in them, PS4Linux and tux4orbis are two nice places.

noob404

Kernel development has been on fire recently. We have had more devs showing interest in low-level dev for PS4 Linux. This is really good to see. @Random-Kafk, would you like to colab with oberdfr?

noob404

Hig If it's the former, https://ps4linux.com/compile-ps4-linux-kernel-tutorial/

oberdfr

Hig
Here's your compiled prerelease
https://github.com/oberdfr/kernel-ps4linux/releases/tag/6.17.1-oberdfr-v1

Hig

noob404 Thank you Sir.

But many like me don't want to comply Kernels We just wanted to beta testing or end user, final compiled version already 🙂👍

noob404

Hig I'll probably have to make a colab version of the script so that people could compile kernels and learn the process atleast a bit during that, even without using their computer resources. There are people who want to compile kernels from source, but, can't due to low resources on their computers.

Hig

Good day to all.

I'm just curious is tessellation will ever going to work for ps4linux or maybe not because of hardware limitations?

Hig

oberdfr thank you Sir Oberdfr.
I will test this and post the results on my system Belize 🙂

Hig

oberdfr Good day, i have tested your BzImage the 120hz works but their is a big black window when i start a game.

And when 120hz is turn-on. My screen got a weird screen glitch all over the screen with or without a game running.

But the thing it is really running in 120hz and it is fast. this is a good step hopefully you will fix the glitch and also please Support ( Zram ) on your Kernel build.

Thank you.

Elokuba

I always have a problem with llvm.warp when compiling mesa, how do I fix it?. GOOD WORK

oberdfr

Elokuba hi. Do you have that error only when compiling 32bit version? If yes, that's most probably because you have to define a cross compile file.
You can take a look at my mesa repos since i alredy added that and the script to build in the source.

Elokuba

oberdfr libdrm no problem, on mesa building, meson setup build error
Kernel not working on Belize no zram & firewall black screen

triki1

Very nice Job !!!!!

saya

nice job 🙂
you can addon patch cpu jaguar + patch bmq so you will