Linux: Enabling SMEE in BIOS leads to boot loop

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   Same here... Motherboard manufacturers don't seem to care. AMD doesn't seem to care about their own advertising. No, eccential, SME is supported on non-pro AMD CPUs. This is well documented, but it is just marketing; it is a lie in reality.

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ECC_4_Ryzen Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 01 Sep 2020 Status: Offline Points: 72	Post Options Post Reply Quote ECC_4_Ryzen Report Post Thanks(0) Quote Reply Topic: Linux: Enabling SMEE in BIOS leads to boot loop Posted: 20 Feb 2025 at 11:21pm
	Same here... Motherboard manufacturers don't seem to care. AMD doesn't seem to care about their own advertising. No, eccential, SME is supported on non-pro AMD CPUs. This is well documented, but it is just marketing; it is a lie in reality.

eccential Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 10 Oct 2022 Location: Nevada Status: Offline Points: 5460	Post Options Post Reply Quote eccential Report Post Thanks(0) Quote Reply Posted: 11 Jan 2023 at 3:21am
	According to AMD's own site explaining the "extras" of their PRO line of processors, I see this: "AMD Memory Guard provides real time encryption of system memory to help protect against physical attacks..." So I wonder if SMEE is only supported with "PRO" CPUs and APUs, disregarding they're all the same silicon dies, but with some features fused off, I guess. And if so, I wonder if BIOS even allowing you to flip that option on non-PRO CPU is a bug. But I don't know for sure.

kernie Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Jan 2023 Status: Offline Points: 115	Post Options Post Reply Quote kernie Report Post Thanks(0) Quote Reply Posted: 11 Jan 2023 at 2:17am
	Hi! My system essentially is: - ASROCK 650M PG Riptide mainboard with the latest BIOS updates 1.11.AS03 [Beta] flashed - Ryzen 9 7950X cpu - 64GB G.Skill Flare X5 DDR5-5600 DIMM CL36 Dual Kit RAM In the BIOS I enabled the SMEE (memory encryption), but when doing so I'm stuck in a boot loop. I see the GRUB2 boot screen, start booting, black screen, again the GRUB2 boot screen. Any ideas? Thanks!