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FreeBSDDesktop / kms-drm

the DRM part of the linuxkpi-based KMS
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mpv vaapi not working for braswell under stable or next #86

Open danboid opened 6 years ago

danboid commented 6 years ago

I'm running FreeBSD 11.2 amd64 on a Gigabyte N3150 D3V board which I believe is using a Braswell GPU. Under Ubuntu 18.04, I can play 30fps UHD n264 MP4 files to a HDMI/DVI attached UHD display with mpv using vaapi acceleration fine (see the attached log files), but I haven't had any such luck doing this under 11.2 with either drm-stable-kmod or drm-next-mod.

I think both are crashing at boot if I boot with a DVI/HDMI display attached. I can boot and load X with the stable kmod if I boot with just VGA or no display attached. With the stable branch, I can use DVI/HDMI if I attach it after I have logged in.

I've tried with and without xf86-video-intel installed and it acts very much the same. When I play a video with mpv, it displays the first frame and then stops. Pushing space to play/(un)pause does nothing nor do the frame advance/reverse keys (, and .) function but I can use the left and right arrow keys to skip between stationary 'keyframes' or push q to quit. I have forced mpv to use vaapi for video out and hwdec but its not helped.

braswell-bionic-xorg-logs.tar.gz

danboid commented 6 years ago

This screenshot is of trying to boot 11.2 on a braswell GPU using the next branch:

kmod-next-braswell-error

johalun commented 6 years ago

I usually test with this one that someone posted in another issue mpv --no-config --hwdec=vaapi --ytdl-format=mp4 'https://www.youtube.com/watch?v=1La4QzGeaaQ'

You have to specify vaapi or it with use software rendering by default. For me on 12-CURRENT, anything but drm-stable-kmod produces green, smearing artifacts with vaapi. As for 11.2 I don't think I have tested. I will try to find the time to do it this week.

Meanwhile, try these tips and see if you can some meaningful information https://github.com/FreeBSDDesktop/kms-drm/wiki/Debugging

I don't have a Braswell computer myself so I can't test on the same hardware...

danboid commented 6 years ago

Hi Johannes

I tried the stable kmod again with no intel driver installed and using your command but I got the same results as before, but I did notice an extra problem.

I presumed the stable kmod would boot if I booted with no displays attached but that isn't the case. The stable branch only boots on my braswell board if I have a VGA display attached. Once it has reached the login prompt, I can safely unplug the VGA and attach the DVI/HDMI cable if needed.