[SOLVED] Gigabyte X299 Master PCIEX8 disable

[simon888]

Hi everyone!

I'm dealing with a problem with my motherboard.

I have a Gigabyte x299 master and an i7 7800x processor

The pcie x8_1 slot and Pciex8_2 aren;t working.

Windows 10 does not see anything that is plugged into the pcie x8_1 or pcie x8_2 slot

How can I activate these slots?

I removed the cards from the pcie x16_1 and _2 slots and plugged them into the pciex8_1 and _2 slots do not give an image to the monitor.

I also connected NVMe disk - Plextor ssd in these slots and still nothing.

What could be the reason for this or can you change something in the BIOS to make it visible?

Please I need some answers

Thanks

 

[rgd1101]

https://download.gigabyte.com/FileList/Manual/mb_manual_x299-aorus-master_1002_e.pdf
might be disable because of the 28 lanes on that cpu
page 86

 

[Calvin7]

X299 AORUS MASTER features unique PCI Express design that utilizes all 44 lanes from the CPU for full bandwidth.

Intel Core i7-7800X Skylake-X 6-Core uses a 28-lane CPU (6-core). You would want to use a 44-lane CPU (10-core or above) for full bandwidth, but only have a 28-lane CPU.

Refer to table in motherboard manual on page 19.

 

[simon888]

is there any way around it ?
so I need 44 lanes
this processor will do ?
I7-9800X

​

 

[rgd1101]

this processor will do ?
I7-9800X

yes