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I guess I have a problem with the functioning of my Nvidia card. The symptoms are like following. When using the command

vblank_mode=0 optirun -b primus glxspheres

the fan is turning faster and faster and after a while, the image of the spheres is getting blurred and glxspheres blocks with little points appearing on the spheres ; then I need to kill it in the console. I have some screen captures of this, but unfortunately I do not have enough reputation points to post them here.

Does anyone have any idea of why this is happening?

Thanks in advance for any suggestion.

For the info, here's my config:

Processor 4x Intel(R) Core(TM) i5-3230M CPU @ 2.60GHz

Memory 8069MB (3380MB used)

Kernel Linux 3.5.0-42-generic (x86_64)

BIOS Date 07/19/2012 Vendor American Megatrends Inc. (www.ami.com) Version 4.6.5

Board Name W3x0ET Vendor CLEVO CO.

Host bridge Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09) VGA compatible controller Intel Corporation 3rd Gen Core processor Graphics

VGA compatible controller NVIDIA Corporation GK107M [GeForce GTX 660M] (rev ff) (prog-if ff)

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