雙卡Default VGA問題

由於想玩VGA passthrough所以行緊A+N雙卡
正路應該係咁插:
PCIE 1: Geforce 1060
PCIE 3: Radeon R7 240
但嘗試多次之下發覺LINUX用死左我張1060做Default Boot入GNOME
當我一DISABLE左NOUVEAU Driver就出現閃屏問題
所以唯有掉轉插:
PCIE 1: Radeon R7 240
PCIE 3: Geforce 1060
但問題是我粒U係i7 6800得28 LANE
變相PCIE3得返X8行唔盡
雖然哩度話好似無咩影響PERFORMANCE
但放返上PCIE 1散熱應該係好D,正路應該都咁插

所以想問
係BIOS默認左PCIE 1係PRIMARY哩個情況下
PCIE 1: Geforce 1060
PCIE 3: Radeon R7 240
點SET PCIE 3 張Radeon做default入GNOME
而令到PCIE 1張1060可以DISABLE DRIVER而又無閃屏

希望高手指教

every card or i should say every port on every card has a unique PCI id. your xorg.conf should be able to connect the device to the monitor. i don't know if it is the way to control the card for gnome.

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