Public bug reported:
When trying to do any type of encoding using any of the VAAPI encoders
from FFmpeg, the system hangs entirely for some time. On dmesg, the
following appears:
[ 107.557643] [drm] GPU HANG: ecode 9:0:0x8fd8ffff, in ffmpeg [2047], reason:
Hang on rcs0, action: reset
[ 107.557651] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 107.557654] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 107.557657] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 107.557660] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 107.557665] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 107.557684] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 115.615609] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 123.514807] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 131.511092] i915 0000:00:02.0: Resetting rcs0 after gpu hang
[ 137.492729] i915 0000:00:02.0: Resetting vcs0 after gpu hang
Then the system returns. It shows an enormous RAM usage (more than 6 GB)
for a few seconds and then reduces to lower values, but still high.
Using h264_vaapi as a example: it uses 580 MB, while when VAAPI was not
broken, it used 20 MB for the same task. The resulting media file from
FFmpeg has no video output, only audio.
This is happening with all VAAPI encoders but vp8_vaapi, which it says
the is no entry point (although Skylake has support for VP8 encoding
working in Artful).
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: i965-va-driver 2.0.0+dfsg1-1
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: XFCE
Date: Sat Feb 24 14:51:41 2018
InstallationDate: Installed on 2017-06-13 (255 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: intel-vaapi-driver
UpgradeStatus: Upgraded to bionic on 2017-10-20 (127 days ago)
** Affects: intel-vaapi-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
** Attachment added: "erro_VAAPI"
https://bugs.launchpad.net/bugs/1751492/+attachment/5062060/+files/erro_VAAPI
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https://bugs.launchpad.net/bugs/1751492
Title:
VAAPI encoding is broken in Skylake
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