Comment # 31 on bug 85320 from Maxim Kachur

I think I have the same on RS880 here (HD4290).
Mesa 10.3.5, libdrm 2.4.58, kernel 3.18.1, R600_rlm.bin + RS780_uvd.bin
firmware from August 2014.
Testing with mplayer + vdpau.