Crashes and CPU Errors at Boot since Kernel 5.10

General system Kernel, boot, graphics & hardware
41

You shouldn’t have to hard power off at all, read up on REISUB, it is a safer way to gracefully power down when your machine freezes up.

https://wiki.archlinux.org/index.php/Keyboard_Shortcuts#Kernel_(SysRq)

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42

We are talking actual hard freeze here. REISUB doesn’t work if the computer is genuinely frozen.
(Trust me, I tried. Computer 100% unresponsive)

43

I was reading up on this, this week and haven’t set it up yet. Might come in handy.

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44

Instead of this I would try

amd_iommu=pt

This enables IOMMU for devices used in passthrough and will provide better host performance.

2 Likes
45

Only if using passthrough, which very few desktop users would.

46

What uses passthrough?

47

PCI passthrough allows a virtual machine guest access to and control over a PCI host device.

The most common use of this on a desktop system is allow a graphics card to be accessed directly within a VM. Instead of using a VM being limited to its virtual graphics adapter you could utilize the power of an actual gpu.

IOMMU is required to achieve this, amd_iommu on an AMD system, and it can be fiddly to setup.

https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF

2 Likes
48

5.10-vd + nVidia 460.32 works on that box.
I did encounter a hard crash while playing a game, but unsure whether it’s related to the driver/kernel combination as nothing showed up in the logs.

1 Like
49

I don’t seem to have any issues with my vmware VMs, but I will try the amd_iommu=pt option suggested by @axt , better safe than sorry.

50

Thanks a lot for this thread!
I’ve had exactly same problems with Asus ROG Crosshair VII Hero (without WiFi) and kernel-5.13.4.