Vulkan compatibility broken in Lakka-v6.x

[shakkalakka]

hi, after updating from Lakka 5.x i cannot use vulkan driver anymore. It just crashes. My System is x64 with Intel i7 7700 and integrated graphics.

i use this image: Lakka-Generic.x86_64-6.x-20250207-0af7dae.img.gz

[Ntemis]

Same here i need some logs to see what going on

[ToKe79]

use gl/glcore.

[barbudreadmon]

use gl/glcore.

Why was this issue closed after that answer ? Is lakka dropping support for vulkan ?

[ToKe79]

no, vulkan is still included, but not all GPUs support all vulkan extensions, in such case you should use gl/glcore.

[barbudreadmon]

For hardware-rendered cores compatible with both, vulkan far outperforms opengl, hence why it's strongly recommended to use it when available.

Here, it seems like something that has nothing to do with cores and actual emulation entirely broke vulkan support for a whole range of gpus. This feels kind of messed up.

[ToKe79]

This is a report from a single GPU - iGPU Intel HD 630. As per Intel these iGPUs support Vulkan 1.2, but not Vulkan 1.3.

https://www.intel.com/content/www/us/en/support/articles/000005524/graphics.html#primary-content

Current MESA implements Vulkan 1.3, which would mean we would have to downgrade MESA, what is not planned.

You are free to correct me and submit a fix.

[barbudreadmon]

So vulkan 1.3 support is required for frontend/os logic while the emulators actually don't require it.

As a core dev, i remember being asked around 2020 to lower a core's opengl requirement which was deemed too high (4.3 released in 2012), because retrocompatibility was important. I have very mixed feelings when reading that a vulkan version from 2022 is now required for anything vulkan.

[ToKe79]

Guys, I don't know what you want me to tell you. I think this must be addressed in the upstream project (MESA?), not in Lakka. We can't use "outdated" package for the sake of users with older hardware and at the same time hinder the usage for user with newer hardware.

In my opinion Lakka did not break the compatibility for the hardware.

I might be wrong, but none of the couple Lakka developers/maintainers has the means to test all kinds of GPUs and seek for patches that fix the incompatibility issue. Maybe the issue is on Lakka side and some package is built with some missing/incorrect flag.

I will rename this issue (make it more general) and leave the issue open, so others having similar issue can contribute their experience.

[ToKe79]

As a core dev, i remember being asked around 2020 to lower a core's opengl requirement which was deemed too high (4.3 released in 2012), because retrocompatibility was important.

I don't know the details, but keep in mind that RetroArch runs natively on devices like PSP, older MacOS, PS2, ... where the support for newer OpenGL version might not be available, therefore the minimum requirement for the core could be set lower for that reason.

[gouchi]

@shakkalakka Thank you for reporting this issue. In order to make progress towards solving this problem as Ntemis requested, please provide some log so that we can make a diag.

You only need to run createlog.

Moreover, please rename the issue title to something Vulkan is not working in Lakka 6.x with Intel HD 630.

Thank you.

[ShigeakiAsai]

This Generic-x86_64-log-2025-02-15-01.07.26.zip file is logfile by createlog.

Lakka image : Lakka-Generic.x86_64-6.x-20250207-0af7dae.img.gz
My PC : ASRock N100DC-ITX
Boot from LIVE USB

Thanks
ASAI, Shigeaki

[ToKe79]

@shakkalakka may I kindly ask you to verify that vulkan works with your iGPU with image from here: https://nightly.builds.lakka.tv/members/vudiq/mesa-24.1.0/

I have success with RPi4, RPi5 and AMD iGPU. With Intel iGPU I have only one older laptop/chromebook, and vulkan does not work there even with Lakka 5.x. But since Lakka 5.0 works for you, maybe the above image will too. Thank you!

[ToKe79]

And maybe also image from here: https://nightly.builds.lakka.tv/members/vudiq/devel-mesa25-test/
RPi4 vulkan works, RPi5 vulkan does not work, Generic vulkan works with AMD iGPU.

[shakkalakka]

Sure, but it will take some days. There is also an annoying hard freeze Bug at closing content with flycast, lrps2, scummvm and other cores with v.5.x and later. This might prevent me using newer Versions of lakka anyway (stable 5.0 was last that worked for me) but i definitly will try the Images you postet and give a Report.

[ShigeakiAsai]

I also tested about https://nightly.builds.lakka.tv/members/vudiq/mesa-24.1.0/

My result:

• Generic.x86_64 : OK, retroarch is started with vulkan
  (Lakka-Generic.x86_64-6.0-devel-20250222143258-1d71d11.img.gz)
  Intel N100 - Intel® UHD Graphics (Integrated) GPU
  Intel Core i3 12100T - AMD Radeon RX 6400 GPU
• RPi4.aarch64 : OK, retroarch is started with vulkan
  (Lakka-RPi4.aarch64-6.0-devel-20250222143455-1d71d11.img.gz)
  Raspberry pi 4 (4GB RAM)
• RPi5.aarch64 : OK, retroarch is started with vulkan
  (Lakka-RPi5.aarch64-6.0-devel-20250222143559-1d71d11.img.gz)
  Raspberry pi 5 (8GB RAM)
  Raspberry pi 5 (2GB RAM) D0 stepping

Thanks
ASAI, Shigeaki