On Haswell 4770, drm-intel-nightly, xserver-git & xf86-video-intel-git (at sna/dri2: Stop trying to attach vblank events to pixmaps). Same setup as in bug 91467. Was watching a video with mpv on fullscreen (opengl output driver for h.264 10-bit, so afaik no hwdec) and got a message notification (using dunst, http://knopwob.org/dunst/index.html ). That caused rapid screen flicking with the crash after a few seconds. [ 11945.643] (EE) [ 11945.646] (EE) Backtrace: [ 11945.648] (EE) 0: /usr/bin/xorg-server/Xorg (OsSigHandler+0x29) [0x5f16f9] [ 11945.648] (EE) 1: /usr/lib/libc.so.6 (killpg+0x40) [0x7f5b23a796bf] [ 11945.652] (EE) 2: /usr/lib/xorg/modules/drivers/intel_drv.so (gpu_bo_download+0x1c) [0x7f5b1dc17e3c] [ 11945.652] (EE) 3: /usr/lib/xorg/modules/drivers/intel_drv.so (download_boxes+0x21) [0x7f5b1dc18121] [ 11945.652] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so (_sna_pixmap_move_to_cpu+0x4a2) [0x7f5b1dc2d142] [ 11945.652] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so (sna_drawable_move_region_to_cpu+0x9f7) [0x7f5b1dc30157] [ 11945.653] (EE) 6: /usr/lib/xorg/modules/drivers/intel_drv.so (sna_poly_fill_rect+0x2ad) [0x7f5b1dc44dad] [ 11945.653] (EE) 7: /usr/bin/xorg-server/Xorg (damagePolyFillRect+0x82) [0x558d22] [ 11945.653] (EE) 8: /usr/bin/xorg-server/Xorg (miPaintWindow+0x20a) [0x5ca3fa] [ 11945.653] (EE) 9: /usr/bin/xorg-server/Xorg (miHandleValidateExposures+0x88) [0x5e2338] [ 11945.653] (EE) 10: /usr/bin/xorg-server/Xorg (miMoveWindow+0x1be) [0x5e256e] [ 11945.653] (EE) 11: /usr/bin/xorg-server/Xorg (compMoveWindow+0x46) [0x4f2c76] [ 11945.653] (EE) 12: /usr/bin/xorg-server/Xorg (ConfigureWindow+0x7ea) [0x47742a] [ 11945.654] (EE) 13: /usr/bin/xorg-server/Xorg (ProcConfigureWindow+0x86) [0x433e76] [ 11945.654] (EE) 14: /usr/bin/xorg-server/Xorg (Dispatch+0x25f) [0x439a3f] [ 11945.654] (EE) 15: /usr/bin/xorg-server/Xorg (dix_main+0x3d4) [0x43f7a4] [ 11945.654] (EE) 16: /usr/lib/libc.so.6 (__libc_start_main+0xf0) [0x7f5b23a66610] [ 11945.655] (EE) 17: /usr/bin/xorg-server/Xorg (_start+0x29) [0x424709] [ 11945.655] (EE) [ 11945.655] (EE) Segmentation fault at address 0x96 [ 11945.655] (EE) Fatal server error: [ 11945.655] (EE) Caught signal 11 (Segmentation fault). Server aborting
That is unlikely to be the initial point of corruption. Best to run with --enable-debug and attach the full Xorg.log.
Created attachment 117940 [details] Xorg.0.log with enable-debug=full Almost always reproducible with a fullscreen video and "DISPLAY=:0 notify-send foo" via ssh.
Haven't seen the issue in months.
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