Hello, I'm seeing pageflips give up on me on SNB hardware - Celeron 847, i5-2400S - where the CRTC becomes unexpectedly busy and never recovers. When I'm failed, I can see interrupts coming in (Interrupts received in /sys/kernel/debug/dri/0/i915_gem_interrupt increments), but the queued flip never happens: # cat /sys/kernel/debug/dri/0/i915_gem_pageflip Flip queued on pipe A (plane A) Stall check enabled, 1 prepares Old framebuffer gtt_offset 0x01354000 New framebuffer gtt_offset 0x0093c000 No flip due on pipe B (plane B) # cat /sys/kernel/debug/dri/0/i915_gem_interrupt North Display Interrupt enable: 8eb48585 North Display Interrupt identity: 00000000 North Display Interrupt mask: 734bfa7a South Display Interrupt enable: ffffffff South Display Interrupt identity: 00000000 South Display Interrupt mask: f114ffff Graphics Interrupt enable: 00401001 Graphics Interrupt identity: 00000000 Graphics Interrupt mask: ffffffff Interrupts received: 1006958 Graphics Interrupt mask (render ring): ffffffff Current sequence (render ring): 1472838 Graphics Interrupt mask (bsd ring): ffffffff Current sequence (bsd ring): 1271460 Graphics Interrupt mask (blitter ring): ffffffff Current sequence (blitter ring): 1472839 I'm running packages from Fedora 20: # rpm -q mesa-libGL kernel xorg-x11-server-Xorg xorg-x11-drv-intel libva- intel-driver libdrm mesa-libGL-9.2.5-1.20131220.fc20.x86_64 kernel-3.13.3-201.fc20.x86_64 xorg-x11-server-Xorg-1.14.4-90.fc20.x86_64 xorg-x11-drv-intel-2.21.15-5.fc20.x86_64 libva-intel-driver-1.2.1-1.fc20.x86_64 libdrm-2.4.50-1.fc20.x86_64 I've put a dmesg from a failed system at http://90.155.96.198/sfarnsworth/flip-fail.txt - it's 11.3MB, so can't be attached. I've spotted the MCH_SSKPD message, but I also get the failures on systems that don't output that message. Any ideas? Or should I file a bug? -- Simon Farnsworth Software Engineer ONELAN Ltd http://www.onelan.com _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
