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...28 09:08:50 zeus kernel: [ 3164.314087] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 7 [007f15c000 VirtualBox[8257]] subc 0 class 0000 mthd 2b1c data 00 013070 Feb 28 09:08:50 zeus kernel: [ 3164.314095] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 7 [007f15c000 VirtualBox[8257]] subc 0 class 0000 mthd 2b20 data 00 0002ef Feb 28 09:08:50 zeus kernel: [ 3164.314103] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 7 [007f15c000 VirtualBox[8257]] subc 0 class 0000 mthd 2b24 data 00 000002 Feb 28 09:08:50 zeus kernel: [ 3164.314111] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 7 [007f15c000 VirtualBox[8257]] sub...

Thanks for the reply Bill. I am aware of the interrupts problem. To solve it I have already disabled my serial ports freeing up interrupts 3 and 4 and these are allocated to the two cards. This was done 2 months ago and has not solved the problem. Is there any way that something can wake up every now and then and generate these two interrupts? My current /proc/interrupts is as follows:

...e0: 38 00 01 02 47 01 3c 00 3c 00 01 02 47 01 a0 00 8...G.<.<...G... 2af0: a0 00 01 02 47 01 a4 00 a4 00 01 02 47 01 a8 00 ....G.......G... 2b00: a8 00 01 02 47 01 ac 00 ac 00 01 02 47 01 b0 00 ....G.......G... 2b10: b0 00 01 02 47 01 b4 00 b4 00 01 02 47 01 b8 00 ....G.......G... 2b20: b8 00 01 02 47 01 bc 00 bc 00 01 02 47 01 d0 04 ....G.......G... 2b30: d0 04 01 02 22 04 00 79 00 5b 82 25 4d 41 54 48 ...."..y.[.%MATH 2b40: 08 5f 48 49 44 0c 41 d0 0c 04 08 5f 43 52 53 11 ._HID.A...._CRS. 2b50: 10 0a 0d 47 01 f0 00 f0 00 01 01 22 00 20 79 00 ...G.......". y....