Hi Thorsten, On Sun, Aug 28, 2016 at 6:17 PM, Thorsten Leemhuis <regressions@xxxxxxxxxxxxx> wrote: > Lo! Dave, below report made it to the list of regression for 4.8, but > afaics nothing happened after the initial report. Was it discussed (and > maybe even fixed?) elsewhere? Or is there some reason why it shouldn't > be on the list of regressions at all? We've got a patch set[1] to fix this. [1] http://www.spinics.net/lists/dri-devel/msg116491.html Regards, Liu Ying > > Ciao, Thorsten > > On 13.08.2016 14:37, Peter Senna Tschudin wrote: >> >> d7868cb7ac58640e9c0383205ba31bd6a985cc6f is the last commit that works for me. I'm experiencing black screen after Weston starts in two different i.MX based devices: >> >> - i.MX6 -> arch/arm/boot/dts/imx6q-b850v3.dts >> - i.MX53 based device >> >> Weston starts, but nothing is shown on screen. fb works fine. Disabling fb on Kconfig or simply commenting out drm_fbdev_cma_init() solves the black screen issue. >> >> The tests that are causing the black screen: >> >> diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c >> index 4ad67d0..52dc1b7 100644 >> --- a/drivers/gpu/drm/imx/ipuv3-plane.c >> +++ b/drivers/gpu/drm/imx/ipuv3-plane.c >> @@ -325,7 +325,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, >> if (old_fb && (state->src_w != old_state->src_w || >> state->src_h != old_state->src_h || >> fb->pixel_format != old_fb->pixel_format)) >> - return -EINVAL; >> >> eba = drm_plane_state_to_eba(state); >> >> @@ -336,7 +336,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, >> return -EINVAL; >> >> if (old_fb && fb->pitches[0] != old_fb->pitches[0]) >> - return -EINVAL; >> >> switch (fb->pixel_format) { >> case DRM_FORMAT_YUV420: >> @@ -372,7 +372,7 @@ static int ipu_plane_atomic_check(struct drm_plane *plane, >> return -EINVAL; >> >> if (old_fb && old_fb->pitches[1] != fb->pitches[1]) >> - return -EINVAL; >> } >> >> I tried to replace the return -EINVAL by crtc_state->mode_changed = true with no positive results. >> >> I'm trying to understand what is the difference with and without fb, but I have no conclusions yet. >> >> Hints on what could be the cause here? >> >> Thank you, >> >> Peter >> >> P.S. This is what I get after replacing the return -EINVAL(the mode is correct): https://goo.gl/photos/1eRdcco9GpszgvzM8 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
