[Nouveau] Trouble on kernel

[Martin Kaffanke]

Hi there,

Sometimes my computer crashes since i use now ubuntu 13.10 with 
unity/compiz.

dmesg tells me:

[  686.209019] nouveau E[    PBUS][0000:00:0d.0] MMIO write of 
0x00000000 FAULT at 0x00b020

and later:

[ 1425.565441] nouveau E[  PGRAPH][0000:00:0d.0]  ERROR nsource: 
DATA_ERROR nstatus: BAD_ARGUMENT
[ 1425.565462] nouveau E[  PGRAPH][0000:00:0d.0] ch 3 [0x00056000 
compiz[1970]] subc 2 class 0x0039 mthd 0x0314 data 0x031dc000

So I don't really know where to start for debugging,
if you could help me that would be great.

Full dmesg output on http://ubuntuone.com/3AVhp6HT2jU26HdfguAbdV

thanks,
Martin