Guys,
I really need some help to confirm whether this board causes all the several issues I'm having. It has been nothing but trouble at STOCK settings since I've bought it, and it's COUNTLESS MILES behind my 5y old G1 Sniper M3 Z77 from Gigabyte. This board looks like a slightly sophisticated brick in comparison.
1. Pure UEFI mode (CSM set to Disabled) is totally broken for me, at least with a Zotac GTX 1060 6GB Mini. If CSM is set to Disabled, the board SOFT BRICKS and can never finish POST again unless the DualBIOS recovery procedure is used. It doesn't even output video or light up the keyboard.
2. The implementation of the Intel l211 NIC seems broken either in firmware/BIOS or hardware. TCP Checksum Offload is 100% broken (cannot be enabled at all) both in Windows 10 and Linux, and other features such as Receive-Side Scaling on Windows seem to depend on it.
3. They removed something as BASIC as SATA AHCI hot-plug and individual drive control, meaning I can't individually enable/disable drives in BIOS. Windows and several Linux distros get totally confused when they detect more than 1 ESP and install their bootloader to the 1st one they find.
Regarding #2, please see https://communities.intel.com/message/547276#547276 and help me test if you can't enable TCP Checksum Offload at all? If the NIC is broken, I'm going to return this PITA and get anything else from ASUS or I don't know.
Gigabyte's support has been totally useless and deceptive regarding my reporting of all these issues, both in their official issue tracker and other places. I was able to reach out to Matthew on Reddit, but he said he'd check it out and then totally disappeared and ignored further communications. Worst support I've ever received.
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