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Date:      Sat, 16 May 2020 11:59:53 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 246499] Intel hardware acceleration
Message-ID:  <bug-246499-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246499

            Bug ID: 246499
           Summary: Intel hardware acceleration
           Product: Base System
           Version: 12.1-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: uninstance@cock.li

Created attachment 214547
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D214547&action=
=3Dedit
This vdpauinfo output.

I own a thinkpad t450s.

Intel Core i7-5600U
Intel HD Graphics 5500 integrated into CPU

If I run 'env vblank_mode=3D0 glxgears', then gears are fine and smooth. Th=
ey
take ~15% of the CPU time while giving out 500FPS and ~34% when giving 2500=
FPS.

But vim and zathura are laggy. If scroll zathura, then Xorg starts consumin=
g up
to ~70% of the CPU time. Fire takes ~40% of the CPU time giving 60FPS.

'vainfo' gives no errors, but 'vdpauinfo' shows segmentation fault followed=
 by
a crash:
'[1]    51793 segmentation fault (core dumped)  vdpauinfo'.
There is also a new entry in dmesg after that: 'pid 34555 (vdpauinfo), jid =
0,
uid 1001: exited on signal 11 (core dumped)'. And, each time I run 'vdpauin=
fo',
it creates a file named 'vdpauinfo.core', with the size of 1.6M.

'vainfo' output: https://pastebin.com/qMACR6qX
'vdpauinfo' output: as a script(1) result in the attachements
Xorg.0.log: https://pastebin.com/UYru3qEn
dmesg: https://pastebin.com/nMvUeQGL
vdpauinfo.core: https://transfer.sh/l2eQ3/vdpauinfo.core

I know a guy who faced the same issue with a relatively new thinkpad. So the
issue seems to affect people with newer chipsets.

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