[64.910630] Initializing watchdogs [64.910673] /dev/watchdog0 [64.970326] [FACT before any test] new: hardware.pci.gpu_at_addr.0000:03:00.0: 8086:56a3 Intel Dg2 (Gen12) DG2 [Arc Xe Graphics] [64.970537] [FACT before any test] new: hardware.pci.gpu_at_addr.0000:00:02.0: 8086:4680 Intel Alderlake_s (Gen12) AlderLake-S GT1 [64.980030] [FACT before any test] new: hardware.pci.drm_card_at_addr.0000:03:00.0: card1 [64.981544] [FACT before any test] new: hardware.pci.drm_card_at_addr.0000:00:02.0: card0 [64.983421] [FACT before any test] new: kernel.kmod_is_loaded.xe: true [64.986046] [001/207] (960s left) xe_exec_system_allocator (many-large-mmap-huge-nomemset) [65.090641] Subtest many-large-mmap-huge-nomemset: SKIP (0.000s) [65.138379] [002/207] (960s left) kms_frontbuffer_tracking (fbc-2p-scndscrn-shrfb-msflip-blt) [65.319510] Starting subtest: fbc-2p-scndscrn-shrfb-msflip-blt [67.217367] Subtest fbc-2p-scndscrn-shrfb-msflip-blt: SUCCESS (1.907s) [67.413982] [003/207] (958s left) xe_exec_basic (multigpu-many-execqueues-many-vm-basic-defer-mmap) [67.507590] Starting subtest: multigpu-many-execqueues-many-vm-basic-defer-mmap [67.868583] Subtest multigpu-many-execqueues-many-vm-basic-defer-mmap: SUCCESS (0.362s) [67.969329] [004/207] (957s left) xe_ccs (ctrl-surf-copy-new-ctx) [68.017049] Starting subtest: ctrl-surf-copy-new-ctx [68.018908] Starting dynamic subtest: linear-compressed-compfmt0-system-vram01 [68.032623] Dynamic subtest linear-compressed-compfmt0-system-vram01: SUCCESS (0.017s) [68.038272] Starting dynamic subtest: linear-compressed-compfmt0-vram01-vram01 [68.208075] Dynamic subtest linear-compressed-compfmt0-vram01-vram01: SUCCESS (0.175s) [68.213738] Starting dynamic subtest: xmajor-compressed-compfmt0-system-vram01 [68.219197] Dynamic subtest xmajor-compressed-compfmt0-system-vram01: SUCCESS (0.012s) [68.224859] Starting dynamic subtest: xmajor-compressed-compfmt0-vram01-vram01 [68.398709] Dynamic subtest xmajor-compressed-compfmt0-vram01-vram01: SUCCESS (0.179s) [68.404352] Starting dynamic subtest: tile4-compressed-compfmt0-system-vram01 [68.409270] Dynamic subtest tile4-compressed-compfmt0-system-vram01: SUCCESS (0.011s) [68.414906] Starting dynamic subtest: tile4-compressed-compfmt0-vram01-vram01 [68.580258] Dynamic subtest tile4-compressed-compfmt0-vram01-vram01: SUCCESS (0.170s) [68.585860] Starting dynamic subtest: tile64-compressed-compfmt0-system-vram01 [68.590177] Dynamic subtest tile64-compressed-compfmt0-system-vram01: SUCCESS (0.011s) [68.595822] Starting dynamic subtest: tile64-compressed-compfmt0-vram01-vram01 [68.769915] Dynamic subtest tile64-compressed-compfmt0-vram01-vram01: SUCCESS (0.179s) [68.771880] Subtest ctrl-surf-copy-new-ctx: SUCCESS (0.755s) [68.878269] [005/207] (956s left) xe_exec_system_allocator (threads-many-large-mmap-new-huge-nomemset) [68.926447] Subtest threads-many-large-mmap-new-huge-nomemset: SKIP (0.000s) [68.979261] [006/207] (956s left) xe_exec_system_allocator (twice-new-busy) [69.026696] Subtest twice-new-busy: SKIP (0.000s) [69.081424] [007/207] (956s left) xe_exec_system_allocator (threads-shared-vm-many-large-mmap-race-nomemset) [69.128727] Subtest threads-shared-vm-many-large-mmap-race-nomemset: SKIP (0.000s) [69.189813] [008/207] (956s left) xe_exec_system_allocator (many-stride-malloc-bo-unmap-nomemset) [69.237663] Subtest many-stride-malloc-bo-unmap-nomemset: SKIP (0.000s) [69.294220] [009/207] (956s left) xe_exec_system_allocator (many-stride-mmap-huge-nomemset) [69.341685] Subtest many-stride-mmap-huge-nomemset: SKIP (0.000s) [69.392456] [010/207] (956s left) xe_exec_system_allocator (threads-shared-vm-many-large-execqueues-mmap-race) [69.439534] Subtest threads-shared-vm-many-large-execqueues-mmap-race: SKIP (0.000s) [69.506200] [011/207] (956s left) xe_vm (large-userptr-split-binds-8388608) [69.551959] Starting subtest: large-userptr-split-binds-8388608 [69.566583] Subtest large-userptr-split-binds-8388608: SUCCESS (0.016s) [69.689171] [012/207] (956s left) xe_exec_system_allocator (threads-shared-vm-many-execqueues-mmap-remap-ro) [69.736641] Subtest threads-shared-vm-many-execqueues-mmap-remap-ro: SKIP (0.000s) [69.793962] [013/207] (956s left) kms_frontbuffer_tracking (fbcpsr-1p-primscrn-pri-shrfb-draw-render) [69.970628] Starting subtest: fbcpsr-1p-primscrn-pri-shrfb-draw-render [69.974045] Subtest fbcpsr-1p-primscrn-pri-shrfb-draw-render: SKIP (0.000s) [70.081204] [014/207] (956s left) xe_eudebug_sriov (deny-eudebug) [70.131126] Subtest deny-eudebug: SKIP (0.000s) [70.188599] [015/207] (955s left) xe_exec_system_allocator (threads-many-stride-mmap-new-race) [70.239654] Subtest threads-many-stride-mmap-new-race: SKIP (0.000s) [70.294421] [016/207] (955s left) xe_exec_system_allocator (process-many-mmap-new-huge) [70.342079] Subtest process-many-mmap-new-huge: SKIP (0.000s) [70.390435] [017/207] (955s left) kms_frontbuffer_tracking (fbcpsr-2p-primscrn-spr-indfb-draw-render) [70.566246] Starting subtest: fbcpsr-2p-primscrn-spr-indfb-draw-render [70.569561] Subtest fbcpsr-2p-primscrn-spr-indfb-draw-render: SKIP (0.000s) [70.688151] [018/207] (955s left) xe_exec_compute_mode (once-userptr-invalidate) [70.734658] Starting subtest: once-userptr-invalidate [72.547949] Subtest once-userptr-invalidate: SUCCESS (1.816s) [72.680081] [019/207] (953s left) xe_query (query-topology) [72.726340] Starting subtest: query-topology [72.833902] Subtest query-topology: SUCCESS (0.000s) [72.885700] [020/207] (953s left) xe_exec_system_allocator (threads-many-large-execqueues-malloc-prefetch-race) [72.936558] Subtest threads-many-large-execqueues-malloc-prefetch-race: SKIP (0.000s) [72.995905] [021/207] (953s left) xe_exec_system_allocator (process-many-execqueues-malloc-race-nomemset) [73.044778] Subtest process-many-execqueues-malloc-race-nomemset: SKIP (0.000s) [73.107843] [022/207] (953s left) xe_vm (large-userptr-binds-2097152) [73.153187] Starting subtest: large-userptr-binds-2097152 [73.157370] Subtest large-userptr-binds-2097152: SUCCESS (0.005s) [73.267316] [023/207] (953s left) xe_exec_system_allocator (process-many-stride-new) [73.313914] Subtest process-many-stride-new: SKIP (0.000s) [73.382688] [024/207] (953s left) kms_frontbuffer_tracking (fbcdrrs-2p-primscrn-spr-indfb-draw-mmap-wc) [73.566686] Starting subtest: fbcdrrs-2p-primscrn-spr-indfb-draw-mmap-wc [73.569925] Subtest fbcdrrs-2p-primscrn-spr-indfb-draw-mmap-wc: SKIP (0.000s) [73.706200] [025/207] (952s left) kms_lease (lease-invalid-connector) [73.876582] Starting subtest: lease-invalid-connector [73.878304] Starting dynamic subtest: pipe-A-HDMI-A-6 [73.880127] Dynamic subtest pipe-A-HDMI-A-6: SUCCESS (0.000s) [73.886119] Starting dynamic subtest: pipe-A-DP-4 [73.887564] Dynamic subtest pipe-A-DP-4: SUCCESS (0.000s) [73.893515] Starting dynamic subtest: pipe-B-HDMI-A-6 [73.895119] Dynamic subtest pipe-B-HDMI-A-6: SUCCESS (0.000s) [73.901590] Starting dynamic subtest: pipe-B-DP-4 [73.903237] Dynamic subtest pipe-B-DP-4: SUCCESS (0.000s) [73.909071] Starting dynamic subtest: pipe-C-HDMI-A-6 [73.910685] Dynamic subtest pipe-C-HDMI-A-6: SUCCESS (0.000s) [73.916455] Starting dynamic subtest: pipe-C-DP-4 [73.917918] Dynamic subtest pipe-C-DP-4: SUCCESS (0.000s) [73.923533] Starting dynamic subtest: pipe-D-HDMI-A-6 [73.925136] Dynamic subtest pipe-D-HDMI-A-6: SUCCESS (0.000s) [73.931217] Starting dynamic subtest: pipe-D-DP-4 [73.932807] Dynamic subtest pipe-D-DP-4: SUCCESS (0.000s) [73.934419] Subtest lease-invalid-connector: SUCCESS (0.005s) [74.009799] [026/207] (952s left) xe_exec_basic (multigpu-once-basic-defer-mmap) [74.064284] Starting subtest: multigpu-once-basic-defer-mmap [74.193436] Subtest multigpu-once-basic-defer-mmap: SUCCESS (0.129s) [74.303761] [027/207] (952s left) xe_exec_basic (many-execqueues-userptr-rebind) [74.350559] Starting subtest: many-execqueues-userptr-rebind [74.664526] Subtest many-execqueues-userptr-rebind: SUCCESS (0.315s) [74.776008] [028/207] (952s left) kms_content_protection (mei-interface) [74.960563] Starting subtest: mei-interface [74.977076] Subtest mei-interface: SKIP (0.006s) [75.111409] [029/207] (951s left) kms_flip_scaled_crc (flip-64bpp-4tile-to-32bpp-4tile-downscaling) [75.279445] Starting subtest: flip-64bpp-4tile-to-32bpp-4tile-downscaling [75.281219] Starting dynamic subtest: pipe-A-valid-mode [77.406822] Dynamic subtest pipe-A-valid-mode: SUCCESS (2.127s) [77.408693] Subtest flip-64bpp-4tile-to-32bpp-4tile-downscaling: SUCCESS (2.127s) [77.592852] [030/207] (949s left) xe_query (query-mem-usage) [77.640490] Starting subtest: query-mem-usage [77.655353] Subtest query-mem-usage: SUCCESS (0.000s) [77.800212] [031/207] (949s left) xe_exec_system_allocator (threads-shared-vm-many-mmap-shared-nomemset) [77.847530] Subtest threads-shared-vm-many-mmap-shared-nomemset: SKIP (0.000s) [77.912684] [032/207] (949s left) xe_exec_system_allocator (threads-many-large-execqueues-mmap-new-huge-nomemse [77.960507] Subtest threads-many-large-execqueues-mmap-new-huge-nomemset: SKIP (0.000s) [78.021198] [033/207] (949s left) xe_exec_system_allocator (process-many-execqueues-mmap-mlock-nomemset) [78.068873] Subtest process-many-execqueues-mmap-mlock-nomemset: SKIP (0.000s) [78.119832] [034/207] (949s left) xe_exec_system_allocator (many-64k-mmap-new-huge) [78.168933] Subtest many-64k-mmap-new-huge: SKIP (0.000s) [78.219266] [035/207] (948s left) xe_exec_system_allocator (partial-atomic-munmap-cpu-fault) [78.266308] Subtest partial-atomic-munmap-cpu-fault: SKIP (0.000s) [78.313464] [036/207] (948s left) xe_vm (large-binds-67108864) [78.358158] Starting subtest: large-binds-67108864 [78.361803] Subtest large-binds-67108864: SUCCESS (0.005s) [78.491298] [037/207] (948s left) xe_exec_sip_eudebug (breakpoint-writesip) [78.540919] Subtest breakpoint-writesip: SKIP (0.000s) [78.670411] [038/207] (948s left) xe_exec_system_allocator (process-many-stride-malloc-mlock-nomemset) [78.716901] Subtest process-many-stride-malloc-mlock-nomemset: SKIP (0.000s) [78.770991] [039/207] (948s left) xe_ccs (large-ctrl-surf-copy) [78.816768] Starting subtest: large-ctrl-surf-copy [79.184855] Subtest large-ctrl-surf-copy: SUCCESS (0.369s) [79.308011] [040/207] (948s left) xe_exec_basic (multigpu-once-rebind) [79.362367] Starting subtest: multigpu-once-rebind [79.441740] Subtest multigpu-once-rebind: SUCCESS (0.079s) [79.543734] [041/207] (947s left) xe_exec_system_allocator (twice-large-mmap-new) [79.590171] Subtest twice-large-mmap-new: SKIP (0.000s) [79.661169] [042/207] (947s left) xe_exec_system_allocator (many-mmap-nomemset) [79.710131] Subtest many-mmap-nomemset: SKIP (0.000s) [79.768977] [043/207] (947s left) xe_exec_system_allocator (threads-many-stride-new-busy-nomemset) [79.817608] Subtest threads-many-stride-new-busy-nomemset: SKIP (0.000s) [79.864598] [044/207] (947s left) xe_exec_system_allocator (twice-large-malloc-mlock) [79.912522] Subtest twice-large-malloc-mlock: SKIP (0.000s) [79.972763] [045/207] (947s left) xe_exec_queue_property (non-zero-reserved) [80.018668] Starting subtest: non-zero-reserved [80.020546] Subtest non-zero-reserved: SUCCESS (0.001s) [80.141864] [046/207] (947s left) kms_frontbuffer_tracking (fbc-1p-primscrn-spr-indfb-fullscreen) [80.318565] Starting subtest: fbc-1p-primscrn-spr-indfb-fullscreen [82.079805] Subtest fbc-1p-primscrn-spr-indfb-fullscreen: SUCCESS (1.764s) [82.327737] [047/207] (945s left) kms_psr2_sf (psr2-cursor-plane-update-sf) [82.518213] Subtest psr2-cursor-plane-update-sf: SKIP (0.000s) [82.575922] [048/207] (945s left) kms_cursor_legacy (2x-cursor-vs-flip-atomic) [82.748150] Starting subtest: 2x-cursor-vs-flip-atomic [90.630941] Subtest 2x-cursor-vs-flip-atomic: SUCCESS (7.883s) [90.840783] [049/207] (937s left) xe_vm (munmap-style-unbind-userptr-inval-many-either-side-partial) [90.891989] Starting subtest: munmap-style-unbind-userptr-inval-many-either-side-partial [90.902298] Subtest munmap-style-unbind-userptr-inval-many-either-side-partial: SUCCESS (0.012s) [91.003101] [050/207] (936s left) kms_async_flips (async-flip-dpms) [91.171219] Starting subtest: async-flip-dpms [91.533165] Starting dynamic subtest: pipe-A-HDMI-A-6 [93.949591] Dynamic subtest pipe-A-HDMI-A-6: SUCCESS (2.418s) [94.241135] Starting dynamic subtest: pipe-A-DP-4 [96.529702] Dynamic subtest pipe-A-DP-4: SUCCESS (2.294s) [96.739989] Starting dynamic subtest: pipe-B-HDMI-A-6 [98.840129] Dynamic subtest pipe-B-HDMI-A-6: SUCCESS (2.104s) [99.039195] Starting dynamic subtest: pipe-B-DP-4 [101.329818] Dynamic subtest pipe-B-DP-4: SUCCESS (2.295s) [101.517214] Starting dynamic subtest: pipe-C-HDMI-A-6 [103.623100] Dynamic subtest pipe-C-HDMI-A-6: SUCCESS (2.110s) [103.822077] Starting dynamic subtest: pipe-C-DP-4 [106.174214] Dynamic subtest pipe-C-DP-4: SUCCESS (2.358s) [106.370511] Starting dynamic subtest: pipe-D-HDMI-A-6 [108.469257] Dynamic subtest pipe-D-HDMI-A-6: SUCCESS (2.104s) [108.669638] Starting dynamic subtest: pipe-D-DP-4 [111.014560] Dynamic subtest pipe-D-DP-4: SUCCESS (2.353s) [111.016389] Subtest async-flip-dpms: SUCCESS (19.843s) [111.381231] [051/207] (916s left) kms_frontbuffer_tracking (drrs-1p-primscrn-cur-indfb-draw-render) [111.560855] Starting subtest: drrs-1p-primscrn-cur-indfb-draw-render [111.564165] Subtest drrs-1p-primscrn-cur-indfb-draw-render: SKIP (0.000s) [111.697944] [052/207] (916s left) xe_exec_system_allocator (twice-mmap-file-mlock) [111.752541] Subtest twice-mmap-file-mlock: SKIP (0.000s) [111.812247] [053/207] (916s left) kms_big_fb (y-tiled-16bpp-rotate-0) [111.988744] Starting subtest: y-tiled-16bpp-rotate-0 [111.991608] Subtest y-tiled-16bpp-rotate-0: SKIP (0.000s) [112.123476] [054/207] (916s left) xe_exec_system_allocator (once-mmap-new-race) [112.171601] Subtest once-mmap-new-race: SKIP (0.000s) [112.225681] [055/207] (915s left) kms_scaling_modes (scaling-mode-full) [112.391591] Starting subtest: scaling-mode-full [112.407939] Subtest scaling-mode-full: SKIP (0.002s) [112.504509] [056/207] (915s left) xe_drm_fdinfo (utilization-others-idle) [112.550825] Starting subtest: utilization-others-idle [119.600871] Subtest utilization-others-idle: SUCCESS (7.050s) [119.748732] [057/207] (908s left) xe_exec_system_allocator (threads-many-execqueues-mmap-free-race-nomemset) [119.797035] Subtest threads-many-execqueues-mmap-free-race-nomemset: SKIP (0.000s) [119.854065] [058/207] (908s left) kms_addfb_basic (invalid-set-prop) [119.900696] Starting subtest: invalid-set-prop [119.902409] Subtest invalid-set-prop: SUCCESS (0.000s) [120.130766] [059/207] (908s left) xe_eudebug (basic-vm-access-userptr) [120.178685] Subtest basic-vm-access-userptr: SKIP (0.000s) [120.237692] [060/207] (908s left) kms_flip (bo-too-big-interruptible) [120.405963] Starting subtest: bo-too-big-interruptible [120.409354] Starting dynamic subtest: A-HDMI-A6 [120.714833] Dynamic subtest A-HDMI-A6: SUCCESS (0.306s) [120.729133] Starting dynamic subtest: B-HDMI-A6 [120.895141] Dynamic subtest B-HDMI-A6: SUCCESS (0.177s) [120.908734] Starting dynamic subtest: C-HDMI-A6 [121.061726] Dynamic subtest C-HDMI-A6: SUCCESS (0.163s) [121.079831] Starting dynamic subtest: D-HDMI-A6 [121.235528] Dynamic subtest D-HDMI-A6: SUCCESS (0.172s) [121.258170] Starting dynamic subtest: A-DP4 [121.451337] Dynamic subtest A-DP4: SUCCESS (0.213s) [121.472885] Starting dynamic subtest: B-DP4 [121.658190] Dynamic subtest B-DP4: SUCCESS (0.204s) [121.678339] Starting dynamic subtest: C-DP4 [121.866220] Dynamic subtest C-DP4: SUCCESS (0.205s) [121.890130] Starting dynamic subtest: D-DP4 [122.062526] Dynamic subtest D-DP4: SUCCESS (0.193s) [122.069118] Subtest bo-too-big-interruptible: SUCCESS (1.663s) [122.340602] [061/207] (906s left) kms_big_fb (x-tiled-max-hw-stride-32bpp-rotate-0-hflip) [122.516476] Starting subtest: x-tiled-max-hw-stride-32bpp-rotate-0-hflip [124.004073] Subtest x-tiled-max-hw-stride-32bpp-rotate-0-hflip: SUCCESS (1.488s) [124.250037] [062/207] (904s left) xe_exec_threads (threads-fd-basic) [124.302248] Starting subtest: threads-fd-basic [124.497637] Subtest threads-fd-basic: SUCCESS (0.196s) [124.641351] [063/207] (903s left) kms_big_fb (x-tiled-16bpp-rotate-180) [124.817579] Starting subtest: x-tiled-16bpp-rotate-180 [130.470873] Subtest x-tiled-16bpp-rotate-180: SUCCESS (5.653s) [130.717097] [064/207] (897s left) xe_exec_system_allocator (threads-shared-vm-many-execqueues-malloc-race) [130.772889] Subtest threads-shared-vm-many-execqueues-malloc-race: SKIP (0.000s) [130.828757] [065/207] (897s left) kms_frontbuffer_tracking (fbcpsr-rgb565-draw-render) [131.005212] Starting subtest: fbcpsr-rgb565-draw-render [131.008306] Subtest fbcpsr-rgb565-draw-render: SKIP (0.000s) [131.122432] [066/207] (897s left) xe_exec_balancer (no-exec-cm-parallel-userptr-invalidate) [131.168645] Starting subtest: no-exec-cm-parallel-userptr-invalidate [131.172184] Subtest no-exec-cm-parallel-userptr-invalidate: SUCCESS (0.004s) [131.310723] [067/207] (897s left) kms_panel_fitting (atomic-fastset) [131.480095] Starting subtest: atomic-fastset [131.483301] Subtest atomic-fastset: SKIP (0.000s) [131.615553] [068/207] (897s left) kms_frontbuffer_tracking (drrs-2p-primscrn-pri-indfb-draw-mmap-wc) [131.799879] Starting subtest: drrs-2p-primscrn-pri-indfb-draw-mmap-wc [131.803149] Subtest drrs-2p-primscrn-pri-indfb-draw-mmap-wc: SKIP (0.000s) [131.896998] [069/207] (897s left) xe_exec_system_allocator (process-many-large-execqueues-mmap-new-race) [131.944829] Subtest process-many-large-execqueues-mmap-new-race: SKIP (0.000s) [132.000390] [070/207] (896s left) xe_eudebug_online (set-breakpoint) [132.051082] Subtest set-breakpoint: SKIP (0.000s) [132.103057] [071/207] (896s left) kms_flip (2x-flip-vs-suspend-interruptible) [132.272316] Starting subtest: 2x-flip-vs-suspend-interruptible [132.288387] Starting dynamic subtest: AB-HDMI-A6-DP4 [169.432512] Dynamic subtest AB-HDMI-A6-DP4: SUCCESS (2.656s) [169.442398] Starting dynamic subtest: AC-HDMI-A6-DP4 [207.436457] Dynamic subtest AC-HDMI-A6-DP4: SUCCESS (2.440s) [207.446883] Starting dynamic subtest: AD-HDMI-A6-DP4 [245.436976] Dynamic subtest AD-HDMI-A6-DP4: SUCCESS (2.448s) [245.448726] Starting dynamic subtest: BC-HDMI-A6-DP4 [283.428789] Dynamic subtest BC-HDMI-A6-DP4: SUCCESS (2.364s) [283.439226] Starting dynamic subtest: BD-HDMI-A6-DP4 [321.412960] Dynamic subtest BD-HDMI-A6-DP4: SUCCESS (2.397s) [321.430018] Starting dynamic subtest: CD-HDMI-A6-DP4 [359.418164] Dynamic subtest CD-HDMI-A6-DP4: SUCCESS (2.351s) [359.426438] Subtest 2x-flip-vs-suspend-interruptible: SUCCESS (14.710s) [368.679431] [072/207] (669s left) xe_exec_system_allocator (once-large-mmap-free-race-nomemset) [368.741106] Subtest once-large-mmap-free-race-nomemset: SKIP (0.000s) [368.813326] [073/207] (669s left) kms_cursor_crc (cursor-random-128x42) [369.030713] Starting subtest: cursor-random-128x42 [369.038657] Starting dynamic subtest: pipe-A-HDMI-A-6 [373.012748] Dynamic subtest pipe-A-HDMI-A-6: SUCCESS (3.971s) [373.035385] Starting dynamic subtest: pipe-D-HDMI-A-6 [376.896928] Dynamic subtest pipe-D-HDMI-A-6: SUCCESS (3.868s) [376.898784] Subtest cursor-random-128x42: SUCCESS (7.866s) [377.127873] [074/207] (661s left) kms_flip (flip-vs-absolute-wf_vblank)