Hi Josue_O_Intel, thank you for reply.
1. I am using " Ubuntu 16.04.5 LTS (GNU/Linux 4.4.0-131-generic x86_64)", but I notice the frequency starts to emit from the processor even if I enter the BIOS before loading the OS.
2. The problem was encountered during RF debugging of WIFI module that integrated to our product. By "product" I mean a closed case product that consisting from Single Board Computer (with Intel i7 U6600), and a few RF modules.
I've noticed this frequency that is reproduced in all our products. Since the case is closed, the frequency is amplified by the case resonance enclosure. The problem can be solved by adding RF energy absorber pads to the casing.
3. The problem is was always there in different degree of magnitude, depends of casing alloy.
4. No changes are made.
As I said the problem was always there, but only now I noticed this frequency that coming from the processor.
The mechanical solution is less robust since adding the energy absorption elements to the system, increase it's weight and effect the thermal profile. So I am looking for a different approach like disabling that frequency.
5. The channel 153 (5765MHz) is 20MHz working near the emitted frequency of 5760MHz. So when the 5760MHz is strong it makes the WIFI module that work at 5765MHz thinks that he receives signal and prevent it to start TX. Meaning it get stuck on RX mode.
6. I looked at the Intel i7 U6600 official datasheets.
link: https://ark.intel.com/content/www/us/en/ark/products/88192/intel-core-i76600u-processor-4m-cache-up-to-3-40-ghz.html
As I see there is nothing regards the 5760MHz frequency, and it cannot be a multiplication of harmonic of clocks that's on the datasheet.
I use RF probe to locate the source of the disturbance, and it's the strongest when it's located on the processor it self. Of course during the measure, I disconnected all other models beside the motherboard, and the DDR, So I know for sure that it's coming from the processor.
