AMD SME causing boot failures and black screen issues on Ryzen Linux systems

guest · Oct 18, 2021

AMD SME causing boot failures and black screen issues on Ryzen Linux systems
October 17, 2021
https://www.neowin.net/news/amd-sme...d-black-screen-issues-on-ryzen-linux-systems/

AMD's Secure Memory Encryption (SME) feature has been found to be causing issues to certain Linux systems and as such, the feature will be disabled by default from now on. The issue was discovered on October 5 by Linux engineer Paul Menzel.

The SME feature is apparently causing boot failures on certain AMD Raven Ridge systems The issue was detected on a Ryzen 3 2200G system which was paired up with an MSI B350M MORTAR motherboard. In other Ryzen PCs, with SME enabled, black screen problems - something AMD is closely familiar with - have also been reported. Hence, the problem might be present on other Zen-based processor families too.
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For those wondering what SME or Secure Memory Encryption is, the feature allows encryption of system DRAM so as to protect sensitive data inside it from hacking efforts or attacks.

Source: LKML via Freedesktop
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NormanF · Oct 23, 2021

That's AMD's version of Intel's PTT. In other words, the culprit is AMD's Trusted Platform Module.

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AMD SME causing boot failures and black screen issues on Ryzen Linux systems

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AMD SME causing boot failures and black screen issues on Ryzen Linux systems

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