GTX 760 on Nouveau, The Witcher 2

[kernelOfTruth]

It works surprisingly smooth,

on 1280x800 and mid settings (no motion blur) and nouveau.pstate=1

echo 0a > /sys/class/drm/card0/device/pstate

but there's some graphical corruption in Geralts face (running the Tutorial)


also there's

[ 3756.241682] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.241685] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.241917] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.241928] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.241930] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.242420] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.242431] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.242434] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.244455] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.244479] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.244492] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.246673] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.246697] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.246711] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.253680] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.253695] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.253698] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.263201] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.263215] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.263218] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.263374] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.263388] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.263391] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.280747] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.280768] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.280771] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.281560] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.281579] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.281582] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.281633] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.281646] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.281648] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.281720] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.281729] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.281732] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.282029] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.282039] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.282041] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.282180] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.282190] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.282193] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.282678] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.282696] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.282699] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.283014] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.283025] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.283027] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.283262] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.283275] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.283279] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.283788] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.283805] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.283808] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003
[ 3756.285871] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [INVALID_BITFIELD] ch 6 [0x007f63a000 witcher2[13191]] subc 0 class 0xa097 mthd 0x2380 data 0x00024000
[ 3756.285897] nouveau E[ PGRAPH][0000:01:00.0] TRAP ch 6 [0x007f63a000 witcher2[13191]]
[ 3756.285901] nouveau E[ PGRAPH][0000:01:00.0] CCACHE 0x80000003