System

  - Fedora 43, KDE Plasma on Wayland
  - GPU: Intel Arc A770 (DG2)
  - Driver: xe (forced via kernel cmdline)
  - Steam + Proton (tried Proton Experimental, Hotfix, GE; same issue on 6.18.3)

Regression window

  - Worked on kernel 6.17.12-300.fc43 (game launches normally).
  - Broken on kernel 6.18.3-200.fc43 (black screen on launch).
  - Reproduced on Jan 10, 2026; confirmed fixed immediately after rebooting into 6.17.12.

Symptoms

  - Launching Cyberpunk 2077 from Steam results in a black screen and hang.
  - Proton log shows repeated VK_ERROR_DEVICE_LOST and swapchain failures under vkd3d‑proton on 6.18.3.
  - Same game/proton configuration on 6.17.12 launches normally and no device‑lost errors appear.

Evidence

  - Bad kernel log (6.18.3) contains repeated:
      - vkd3d-proton: Device ... is lost (VK_ERROR_DEVICE_LOST)
      - swapchain present/acquire failures
  - Good kernel log (6.17.12) lacks VK_ERROR_DEVICE_LOST and only shows benign vkd3d warnings (pipeline cache misses).

Repro steps

  1. Boot kernel 6.18.3-200.fc43
  2. Launch Cyberpunk 2077 from Steam (any Proton version)
  3. Observe black screen/hang and VK_ERROR_DEVICE_LOST in Proton log
  4. Reboot into kernel 6.17.12-300.fc43, repeat launch
  5. Game starts normally

Expected
  Game launches successfully as it does on kernel 6.17.12.



Reproducible: Always