Can't encode yuv with HD graphics

I am using Linux Samples 6.0.160431175.175 with pipeline model.

MediaServerStudio Essentials 2015 R6

Software encoding fine.

But hardware version don't stop in endless while loop inside pipeline->run

Same result in default compiled sample_encode_drm.

I am tring SYSTEM_MEMORY and D3D9_MEMORY

Output:

libva
libva info: VA-API version 0.35.0
libva info: va_getDriverName() returns 0
libva info: User requested driver 'iHD'
libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva info: va_openDriver() returns 0
Encoding Sample Version 1.0.0.0

Input file format       YUV420
Output video            AVC
Source picture:
        Resolution      352x288
        Crop X,Y,W,H    0,0,352,288
Destination picture:
        Resolution      352x288
        Crop X,Y,W,H    0,0,352,288
Frame rate      30.00
Bit rate(Kbps)  750
Target usage    balanced
Memory type     system
Media SDK impl          hw
Media SDK version       1.16

Processing started

System:

Gentoo Linux 4.1.12 x86_64

Intel® 4th generation Core™ i7-4770R

Intel® Iris™ Pro graphics 5200

Please help me.

Best regards Viktor.