this post was submitted on 12 Apr 2024
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AMD Zen3 Linux compatibility upgrade question (lemmy.ml)
submitted 7 months ago* (last edited 7 months ago) by dingdongitsabear@lemmy.ml to c/linux@lemmy.ml
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I'm considering upgrading to a Ryzen 5 5600, they've finally come down to $100 locally (tray version sans cooler).

currently, I have a 1600AF (lower binned 2600, so Zen+) on a B450 board. the upgrade should be straightforward, my board supports it (latest BIOS) and it has the same power rating, so my cheap-ass PSU and stock cooler don't need upgrading.

reason I want to upgrade is I have a number of issues with it under linux so I'd like to check if someone runs a similar setup.

first, I have Cool & Quiet and C-states disabled and Power Idle Control to "Typical Current Idle"; otherwise the machine freezes when waking from suspend after a short while. the second issue is, I have 3600 MT/s Kingston Hyper-X modules that I have to run at 2400 because both XMP profiles (XMP1-3000 and XMP2-3600) are unstable and cause apps to crash (the latter sometimes won't boot at all, can't unlock LUKS).

supposedly, both those issues are fixed in newer gens; old Zen/Zen+ had issues with faster RAM, and the C-state handling is also better in Zen3. also, I can use the new amd-pstate driver.

my PC is plenty fast as is, I'm only considering upgrading to fix them two issues. if it's the same on the other side of the fence, I'd rather skip it.

anyone had first-hand experiences with this?

edit: thanks everyone who took the time to share their setup, I'm way more optimistic about making the jump!

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[–] dingdongitsabear@lemmy.ml 2 points 7 months ago* (last edited 7 months ago) (2 children)

did the upgrade! aside from a little scare* everything worked out beautifully! it sleeps and wakes without issues and the XMP1-3600 profile works. ran a bit of geekbench6, that used to crash on the old CPU - no such thing here; watching the clock speeds reach 4.4 GHz was surreal.

a bunch of new options in the setup, PBO, overclock, etc. I'll leave them be for now.

also, just checked, I don't have the amd-pstate driver active, I'm still on acpi-cpufreq. I'll tackle that one of these days if everything works fine.

    • on first power on, there was only the "American Megatrends" logo and no other text, it just stood there. after a quick ddg, found the solution in a reddit thread, you're supposed to press "Y" there and then commences a series of reboots (5-6 or so, didn't count). after that's done with, you're greeted with your normal POST screen. enter the setup, load "Optimized Defaults", activate XMP1, turn off extraneous devices (serial, SATA ports).
[–] Sentau@discuss.tchncs.de 1 points 7 months ago (1 children)

also, just checked, I don't have the amd-pstate driver active, I'm still on acpi-cpufreq. I'll tackle that one of these days if everything works fine.

What kernel are you running ¿?

[–] dingdongitsabear@lemmy.ml 1 points 7 months ago

I'm on 6.8.5. lscpu | grep -i cppc comes up empty, so I guess I need to enable it in BIOS setup or add some kernel switches.