I have this status message in retbleed under /sys/devices/system/cpu/vulnerabilities/ -
AMD mitigation “untrained return thunk” enabled and hyperthreading disabled and my kernel parameters are sat (Boot Loader) like this:
If I switch the acpi to “on” the system froze on boot after the very last line “VCN decode is enabled in VM mode and JPEGdecode is enabled in VM mode”. I can’t figured out where the problem is.
Is it hardware?
Did I have to change the CPU because is f**ked up?
Vulnerabilities:
Gather data sampling: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Mitigation; untrained return thunk; SMT disabled
Spec rstack overflow: Mitigation; SMT disabled
Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling, PBRSB-eIBRS Not affect
ed
Srbds: Not affected
Tsx async abort: Not affected
ILL Zen 3 family have some enhancements - try to use Zen 3 CPUs
ILL VRMs on MSI B450M MORTAR MAX are rather weak, so don’t use CPUs with 12 or 16 kernels.
And you’re using AMD Ryzen 9 3900X - bad choice for that mobo.
Also use 2nd and 4th slot when using two memory modules (RTFM, man).
Post
inxi -amz
to be sure.
Message: For most reliable report, use superuser + dmidecode.
It performed as expected until some days ago and I’ve accomplished many things with it in the last four years. “old” is very relative here. However, CoreControl (very useful for AMD stuff) addressed me the specific bug string:
And for the record, MSI is a very ■■■■■■ company due to the fact that is gaming-centric on Microsoft products. Any MSI Bios is Windows-centered rather than dual centered. I say that in behalf of my experience with a messy Grub system when you opt for UEFI. Very differently, and better, if you opt for Legacy Bios in case of Linux necessities and dual boot. I’ve purchased an Asus B550 working/office segment for the next week.
This is your personal opinion which lacks facts.
In fact MSI does not prefer any OS for their Bios. This can easily be seen as you don’t need any OS installed to upgrade firmware/Bios. This is already an superior plus to many other mainboard manufacturers which needs strictly MS Windows to update. Additionally they provide a continous and long update support for their boards.
Happy owner and user of MSI Gaming motherboards which works flawlessly under Linux and which recieve continous security updates by the manufacturer…
)