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Message-ID: <20160508134449.2a7e65c5@kant> Date: Sun, 8 May 2016 13:44:49 +0200 From: Stefan Richter <stefanr@...6.in-berlin.de> To: Daniel Vetter <daniel@...ll.ch> Cc: Paulo Zanoni <paulo.r.zanoni@...el.com>, Daniel Vetter <daniel.vetter@...el.com>, intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, Dave Airlie <airlied@...hat.com> Subject: Re: Regression of v4.6-rc vs. v4.5 bisected: a98ee79317b4 "drm/i915/fbc: enable FBC by default on HSW and BDW" On May 06 Daniel Vetter wrote: > On Thu, May 05, 2016 at 10:45:31PM +0200, Stefan Richter wrote: [...] > > Subtest fbc-1p-primscrn-spr-indfb-fullscreen: FAIL (5.876s) > > This one failed in both runs. Can you please retest with just that using > > # kms_frontbuffer_tracking --run-subtest fbc-1p-primscrn-spr-indfb-fullscreen > > Also please boot with drm.debug=0xe and grab the full dmesg of just that > single subtest. There's definitely something going wrong here. I performed this test with - plain v4.6-rc6, - v4.6-rc6 patched with drm-intel-nightly (2016y-05m-06d-14h-29m-58s). On v4.6-rc6, the test failed thus: -------- 8< -------- Subtest fbc-1p-primscrn-spr-indfb-fullscreen failed. **** DEBUG **** (kms_frontbuffer_tracking:1914) DEBUG: Test requirement passed: fbc.can_test (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=2560, height=1440, format=0x34325258, tiling=0x100000000000001, size=14745600) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=10240) (kms_frontbuffer_tracking:1914) DEBUG: Blue CRC: pipe:[2ca73d01 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=2560, height=1440, format=0x34325258, tiling=0x100000000000001, size=14745600) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=10240) (kms_frontbuffer_tracking:1914) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5 (kms_frontbuffer_tracking:1914) DEBUG: Rect 0 CRC: pipe:[febb8b20 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5 (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[2ca73d01 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) DEBUG: Test requirement passed: !fbc_not_enough_stolen() (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[2ca73d01 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) igt-draw-DEBUG: Test requirement passed: intel_gen(intel_get_drm_devid(fd)) >= 5 (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[2ca73d01 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) DEBUG: Test requirement passed: !fbc_not_enough_stolen() (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[2ca73d01 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(width=2560, height=1440, format=0x34325258, tiling=0x100000000000001, size=14745600) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) drmtest-DEBUG: Test requirement passed: is_i915_device(fd) && has_known_intel_chipset(fd) (kms_frontbuffer_tracking:1914) igt-fb-DEBUG: igt_create_fb_with_bo_size(handle=6, pitch=10240) (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[febb8b20 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) DEBUG: Test requirement passed: !fbc_not_enough_stolen() (kms_frontbuffer_tracking:1914) DEBUG: Calculated CRC: pipe:[febb8b20 00000000 00000000 00000000 00000000] sink:[unsupported!] (kms_frontbuffer_tracking:1914) igt-core-INFO: Timed out: CRC reading **** END **** IGT-Version: 1.14-gc03a8ae6bf2f (x86_64) (Linux: 4.6.0-rc6 x86_64) Primary screen: DP 2560x1440, crtc 26 FBC last action not supported Can't test PSR: no usable eDP screen. Sink CRC not supported: primary screen is not eDP Timed out: CRC reading Subtest fbc-1p-primscrn-spr-indfb-fullscreen: FAIL (5.806s) -------- >8 -------- On v4.6-rc6 plus drm-intel-nightly, the test apparently passed: -------- 8< -------- IGT-Version: 1.14-gc03a8ae6bf2f (x86_64) (Linux: 4.6.0-rc6+intel-drm-nightly x86_64) Primary screen: DP 2560x1440, crtc 26 FBC last action not supported Can't test PSR: no usable eDP screen. Sink CRC not supported: primary screen is not eDP Subtest fbc-1p-primscrn-spr-indfb-fullscreen: SUCCESS (1.018s) -------- >8 -------- I will send the kernel messages from each of these two tests in a reply to intel-gfx@...ts.freedesktop.org only. -- Stefan Richter -======----- -=-= -=--- http://arcgraph.de/sr/
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