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AMD E-450 APU with HD-6320 graphics produces jerky videos

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http://askubuntu.com – I try to make videos smooth playing on a Lenovo E325 laptop equipped with AMD E-450 APU. This processor have Ati HD-6320 GPU integrated. I installed ATI proprietary driver (Catalyst 12.04) as described here. Everything went fine and got no errors. However I can not play smooth HD videos. Almost every second frame has been dropped in VLC with hardware acceleration enabled. vainfo shows: libva: VA-API version 0.32.0 Xlib: extension "XFree86-DRI" missing on display ":0". libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/fglrx_drv_video.so libva: va_openDr (HowTos)