This is overwhelmingly likely to be an ANV specific bug, so it should be filed on Mesa issue tracker since it's getting device lost.
cp2077-xe-bugreport-2026-01-10.tar.gz
I have the same issue with an Intel ARC A770.
I have a trigger / reproducer and it is related to moving from the 6.17 kernel to the 6.18 kernel. Something changed between these two kernels which breaks vkd3d. I created an issue on the fedora bugzilla, but basically if I want to play Cyberpunk on proton/steam I need to boot my 6.17 kernel or I get this error. I am using the xe driver and not the legacy i915 driver (the legacy driver has terrible performance).
https://bugzilla.redhat.com/show_bug.cgi?id=2428514
EDIT - I included my analysis data
Some additional testing today ..
Fedora 43 (KDE Wayland), Intel Arc A770 (DG2)
Kernel 6.17.12 works; 6.18.3/6.18.4/6.18.5 fail with black screen + VK_ERROR_DEVICE_LOST.
Mesa/ANV unchanged across kernels.
swapping to lavapipe (software rendering) works just fine (albeit at 9 fps), suggesting the failure is in the hardware driver stack (Xe/firmware path) via VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/lvp_icd.x86_64.json
Proton log shows d3d12_device_mark_as_removed: ... VK_ERROR_DEVICE_LOST and timeline semaphore waits.
Kernel journal shows no explicit xe hang/reset/fault even with debug flags.
debugfs reports wedged_mode=1
Large Xe changes in 6.18 include VM_BIND/madvise/VMA attr work, userptr → gpusvm refactor, TLB invalidation sequencing changes, and late‑bind firmware. These are high‑risk for GPU hangs under D3D12/vkd3d workloads.
kernel commit 6.17.12 -> 6.18.4 bisection on this topic shows these are likely suspects for device-lost hangs:
Found this .. seems very likely: https://github.com/intel/compute-runtime/issues/883
Issue is resolved in the 6.18.7 kernel and was a result of major regressions in the xe driver.
PROTON_ENABLE_NVAPI=0`x1 2025-12PROTON_HEAP_DELAY_FREE=1`x1 2025-12VKD3D_CONFIG=no_upload_hvv`x1 2025-12VKD3D_FEATURE_LEVEL=12_0`x1 2025-120x80004005x1 2025-120x887a0005x1 2025-12
Software information
cyberpunk 2077 consistently fails to launch on a clean install. launcher works fine but actual game goes to black screen, the game uses around 40% of the cpu, opens an audio stream in pipewire, then the cpu usage goes back down to ~0-2% & the game just stays frozen on a black screen. the REDEngineErrorReporter.exe pops up in processes but no window from it shows, no splash screen or audio plays & game doesn't respond to window close (but does respond to SIGTERM).
proton versions tried (prefix cleaned between all of them):
fixes tried:
--launcher-skip -skipStartScreenVKD3D_CONFIG=no_upload_hvvVKD3D_FEATURE_LEVEL=12_0PROTON_HEAP_DELAY_FREE=1PROTON_ENABLE_NVAPI=0none of the above help or make a difference. the game consistently fails with
VK_ERROR_DEVICE_LOST:there's no error from xe or drm in dmesg when this happens
System information
Log files
steam-1091500.log