Bug 94978

Summary:	[SNB] Scaling in VLC 2.2.2 does not work with Linux 4.6-rc2
Product:	libva	Reporter:	Martin Steigerwald <Martin>
Component:	intel	Assignee:	haihao <haihao.xiang>
Status:	RESOLVED WORKSFORME	QA Contact:	Sean V Kelley <seanvk>
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Martin Steigerwald 2016-04-17 09:52:43 UTC

Yesterday I took more than one hour to persuade my X86_64 Debian GNU/Linux Sid/Experimental system to play back a DVD. VLC 2.2.2 on that machine didn´t scale the video to the screen size. Also any manual zoom options did not have any effect.

After trying a bunch of other media players which have broken DVD menu support or other serious issues, I finally rebooted into a 4.5 kernel and there scaling in VLC 2.2.2 worked out of the box and we were finally able to watch the movie.

martin@merkaba:~> apt-show-versions | egrep "libva-|libva1|va-driver"
i965-va-driver:amd64/sid 1.7.0-1 uptodate
i965-va-driver:i386/sid 1.7.0-1 uptodate
libva-drm1:amd64/sid 1.7.0-1 uptodate
libva-drm1:i386 not installed
libva-glx1:amd64/sid 1.7.0-1 uptodate
libva-glx1:i386 not installed
libva-wayland1:amd64/sid 1.7.0-1 uptodate
libva-wayland1:i386 not installed
libva-x11-1:amd64/sid 1.7.0-1 uptodate
libva-x11-1:i386/sid 1.7.0-1 uptodate
libva1:amd64/sid 1.7.0-1 uptodate
libva1:i386/sid 1.7.0-1 uptodate
va-driver-all:amd64 not installed
va-driver-all:i386/sid 1.7.0-1 uptodate
vdpau-va-driver:amd64 not installed
vdpau-va-driver:i386/sid 0.7.4-4 uptodate

This happened on ThinkPad T520 on internal and external display.

martin@merkaba:~> phoronix-test-suite system-info

Phoronix Test Suite v5.2.1
System Information

Hardware:
Processor: Intel Core i5-2520M @ 3.20GHz (4 Cores), Motherboard: LENOVO 42433WG, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 16384MB, Disk: 300GB INTEL SSDSA2CW30 + 480GB Crucial_CT480M50, Graphics: Intel HD 3000 (1300MHz), Audio: Conexant CX20590, Monitor: P24T-7 LED, Network: Intel 82579LM Gigabit Connection + Intel Centrino Advanced-N 6205

Software:
OS: Debian unstable, Kernel: 4.5.0-tp520-btrfstrim+ (x86_64), Desktop: KDE Frameworks 5, Display Server: X Server 1.18.3, Display Driver: intel 2.99.917, OpenGL: 3.3 Mesa 11.1.2, Compiler: GCC 5.3.1 20160409, File-System: btrfs, Screen Resolution: 3840x1080

Kernels are both self-compiled. I can attach config if needed.

Comment 1 Martin Steigerwald 2016-04-23 08:35:38 UTC

Any idea about this one? Thanks, Martin

Comment 2 Martin Steigerwald 2016-04-23 08:39:09 UTC

Hmmm, just found vainfo command, maybe the information in there help:

# vainfo
libva info: VA-API version 0.39.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_39
libva info: va_openDriver() returns 0
vainfo: VA-API version: 0.39 (libva 1.7.0)
vainfo: Driver version: Intel i965 driver for Intel(R) Sandybridge Mobile - 1.7.0
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264StereoHigh         : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc

Comment 3 haihao 2016-04-27 02:00:43 UTC

Do you mean these scaling in your VLC work fine with a 4.5 kernel ? If so,  I don't think it is libva issue. It would be better to check what is changed in other components. 

BTW are you sure scaling in VLC is done by libva? I know some players just use libva for HW accelerated decoding.

Comment 4 Martin Steigerwald 2016-04-29 17:06:49 UTC

(In reply to haihao from comment #3)
> Do you mean these scaling in your VLC work fine with a 4.5 kernel ? If so, 
> I don't think it is libva issue. It would be better to check what is changed
> in other components.

Well it could be something in the 4.6-rc2 kernel.

> BTW are you sure scaling in VLC is done by libva? I know some players just
> use libva for HW accelerated decoding.

I am not sure. I wondered whether to report this on bugzilla.kernel.org or to LKML and intel-gfx-ml, but then I thought it likely would use hardware accelerated video and thus reported it here.

Where do you suggest to report it? Thank you, Martin

Comment 5 Martin Steigerwald 2016-05-21 15:44:15 UTC

With 4.6 kernel (as released by Linus), vlc 2.2.3-1 and libva 1.7.0-2 scaling to fullscreen works properly again.

I see nothing obvious in Debian changelogs of vlc and libva, so… it might have been the kernel. Anyway, closing. Thanks, Martin

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