Issues

• Steam Deck OLED docked: Moonlight decodes 4K120 HDR at 120 FPS but renders ~23–60 FPS in Gaming Mode; Desktop Mode better

  ValveSoftware/gamescope#2469 · Filter by author giuseppe99barchetta opened on Oct 8, 2026

• gamescope_action_binding: NO_BLOCK arm flag logic inverted relative to XML protocol definition

  ValveSoftware/gamescope#2468 · Filter by author connormclaud opened on Oct 8, 2026

• Cursor never moves (and gets hidden) while an Xwayland client holds a whole-surface confine_pointer: only relative motion is forwarded (DRM backend)

  ValveSoftware/gamescope#2466 · Filter by author fgielow opened on Oct 7, 2026
  1

• [Frame/gs 3.16.28] gamescope SIGSEGV in wl_display_get_event_loop from a worker thread when a native Wayland xdg-shell client is mapped

  ValveSoftware/gamescope#2463 · Filter by author utrack opened on Oct 6, 2026

• assert(bRes) in vulkan_create_flat_texture aborts on VK_ERROR_OUT_OF_DEVICE_MEMORY, making the graceful OOM retry path unreachable

  ValveSoftware/gamescope#2459 · Filter by author SorenHJohansen opened on Oct 4, 2026

• Absolute pointer devices whose axis range exceeds the output never move the cursor (Sunshine / Moonlight remote-desktop mouse mode)

  ValveSoftware/gamescope#2458 · Filter by author TrafficDemotion opened on Oct 4, 2026

• [Wayland,NVIDIA] Nested gamescope renders a game's fullscreen dim-overlay window above its dialog → dialog covered by opaque black layer (no gamescope = fine)

  ValveSoftware/gamescope#2456 · Filter by author ccchenyulin opened on Oct 4, 2026

• Steam Big Picture Mode screen artifacts.

  ValveSoftware/gamescope#2455 · Filter by author maydeafmute opened on Oct 3, 2026
  1

• [Nested mode] mouse wheel is 10x too slow for nested Wayland clients (scroll detents forwarded as wl_pointer.axis units)

  ValveSoftware/gamescope#2449 · Filter by author TrafficDemotion opened on Sep 30, 2026

• With Wayland backend app_id and title are not re-sent after a NULL-buffer unmap

  ValveSoftware/gamescope#2446 · Filter by author nilsenist opened on Sep 29, 2026

• 3.16.30 SIGSEGV in libVkLayer_steam_fossilize.so / child exits, 3.16.25 OK on NVIDIA + Hyprland

  ValveSoftware/gamescope#2444 · Filter by author alpenstorm opened on Sep 29, 2026

• Gamescope recieving unintended keyboard inputs on focus

  ValveSoftware/gamescope#2443 · Filter by author readonlyengineer opened on Sep 28, 2026
  6

• Very poor framerate/performance in some titles on Turnip(DOOM 2016 tested)

  ValveSoftware/gamescope#2436 · Filter by author PourOutYourPowerAndLove opened on Sep 24, 2026
  1

• Segfault when a layer-shell client disconnects without cleanup

  ValveSoftware/gamescope#2434 · Filter by author makemake-kbo opened on Sep 23, 2026
  1

• [DRM] Switch display mode to match game resolution

  ValveSoftware/gamescope#2433 · Filter by author allmazz opened on Sep 23, 2026
  1

• [Wayland Backend] Cursor invisible in nested session due to violation of Wayland protocol

  ValveSoftware/gamescope#2432 · Filter by author connormclaud opened on Sep 22, 2026
  2

• Nested Wayland backend: client cursor is blurry on a fractionally scaled output

  ValveSoftware/gamescope#2428 · Filter by author ilyasturki opened on Sep 21, 2026

• Mangoapp not working

  ValveSoftware/gamescope#2424 · Filter by author helpme970 opened on Sep 20, 2026
  6

• gamescopereaper's CloseAllFds() closes fds it doesn't own, silently breaking LD_PRELOAD-ed libraries (e.g. gamemode, when launched as gamemoderun gamescope ...)

  ValveSoftware/gamescope#2422 · Filter by author Frankenpi opened on Sep 20, 2026

• GPUVM page fault on gamescope's gfx ring when taking a screenshot with a ReShade effect active (Steam Deck OLED, SteamOS 3.9.1)

  ValveSoftware/gamescope#2416 · Filter by author Myp3a opened on Sep 18, 2026

• Graphical artifacts in Steam Gaming Mode with Radeon RX 9070 – fixed by Force Composite

  ValveSoftware/gamescope#2414 · Filter by author ralph303 opened on Sep 16, 2026
  1

• Very poor frame pacing on Wayland

  ValveSoftware/gamescope#2412 · Filter by author PancakeTAS opened on Sep 15, 2026

• Cursor not automatically locking anymore

  ValveSoftware/gamescope#2404 · Filter by author morguldir opened on Sep 13, 2026

• Lower fps in Minecraft than a full fleged compositor

  ValveSoftware/gamescope#2403 · Filter by author ebattbug opened on Sep 13, 2026

• Gamescope 3.16.25 crashed with a SIGSEGV inside gamescope::CVBlankTimer::CalcNextWakeupTime(bool).

  ValveSoftware/gamescope#2402 · Filter by author bybrooklyn opened on Sep 13, 2026
  1