After installing PPA fix (50.1-0ubuntu2.1.lp2152207.1) + COGL_DISABLE_GL_EXTENSIONS=EXT_buffer_age,KHR_partial_update in /etc/environment (confirmed loaded in gnome-shell process environ): Errors changed but persist: Error 0x3003 reported by eglSwapBuffers meta_onscreen_native_swap_buffers_with_damage failed. Frame aborted. Failed to query buffer age, got error 3003 Behaviour:
Errors begin within minutes of login and escalate to ~300/minute during active flickering Visual corruption appears at outer top-left and top-right corners of the display, bleeding downward — not at the center tile boundary COGL_DISABLE_GL_EXTENSIONS does not prevent eglSwapBuffers itself from returning 0x3003 Compositor restart via busctl is rejected (bs false "") during the error storm Key finding — temporary workaround: Toggling display scale (200% → 166% → 200%) forces display pipeline reinitialization and stops errors immediately — same behavior as IgorP's refresh rate toggle workaround. This suggests the issue is a recoverable EGL state corruption — Mutter hits 0x3003, enters a bad state, and cannot self-recover without a full pipeline reinit. An automatic recovery path after eglSwapBuffers returns 0x3003 may be needed for MST displays. Hardware: HP ENVY All-in-One 34 Intel UHD 770 (ADL-S GT1), i915 driver 5120x2160 dual-tile MST panel (DP-1 + DP-2, two CRTCs, one logical monitor) NVIDIA RTX 3050 secondary (not driving display, nvidia-drm.modeset=0) Scale: 200% (integer — fractional scaling ruled out as cause) Full boot log attached ** Attachment added: "full-boot-log.txt.gz" https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2152207/+attachment/5973865/+files/full-boot-log.txt.gz -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2152207 Title: Failed to lock front buffer on /dev/dri/card1: gbm_surface_lock_front_buffer failed | Failed to query buffer age, got error 3003 To manage notifications about this bug go to: https://bugs.launchpad.net/mutter/+bug/2152207/+subscriptions -- desktop-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
