Hi. I am running 3.8-rc6 (Ubuntu Raring). I have an GeForce 8800GT. I found this in dmesg: [ 807.862867] nouveau E[ PFIFO][0000:01:00.0] DMA_PUSHER - Ch 2 Get 0x0020030b48 Put 0x0020032dec IbGet 0x00000089 IbPut 0x0000008a State 0x8000f240 (err: INVALID_CMD) Push 0x00704031 [ 1469.668718] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR INVALID_VALUE [ 1469.668725] nouveau E[ PGRAPH][0000:01:00.0] DATA_ERROR [ 1469.668731] nouveau E[ PGRAPH][0000:01:00.0] ch 2 [0x001fad9000] subc 7 class 0x8297 mthd 0x1288 data 0x00044110 [ 1520.790060] nouveau E[ PFIFO][0000:01:00.0] DMA_PUSHER - Ch 2 Get 0x002003472c Put 0x0020036208 IbGet 0x000003bc IbPut 0x000003bd State 0x80004861 (err: INVALID_CMD) Push 0x00406040 This is normal ? (I think not)