The DIRT 5 racing game was one of the titles that hadn't worked on Intel graphics under Linux due to the sparse memory support for the ANV Vulkan driver
While Intel's in-development Xe kernel graphics driver is focused on supporting Tigerlake/Gen12 graphics and newer integrated/discrete graphics with this modern open-source driver with many design improvements over the aging i915 kernel driver, there looks to be one feature that as currently positioned will be missing for DG2/Alchemist: HuC support for helping with media offloading.