Bug#994453: Kernel 5.14 does not boot Lenovo Thinkpad E595 (Ryzen 7 3700U)

[jmho@posteo.net]

Dear maintainers,

I might be hitting the same problem, but I can see the kernel panic 
message:

First a couple of lines saying:

"AMD-Vi: Completion-Wait loop timed out"

then:

"Kernel panic - not syncing: timer does't work through 
Interrupt-remapped IO-APIC"

I was experiencing this also with the 5.14.0-trunk kernel and the 5.13 
before from experimental.

I updated the Lenovo BIOS to the current version but the problem 
persists. Also, booting with "amd_iommu=off" did not help.

Do you need more information? Unfortunately this did not make it to the 
system logs.

kind regards,
Jens-Michael