Hello Kody, I had in the past also a working crash kernel setup. But that started to fail with and after kernel 5.5. Unfortunately I did not yet come to report this to debian.
If that is also the case for you, a workaround could be to install the old 5.4.19 bpo kernel [1]. And modify /etc/default/kdump-tools like this: -KDUMP_KERNEL=/var/lib/kdump/vmlinuz -KDUMP_INITRD=/var/lib/kdump/initrd.img +KDUMP_KERNEL=/boot/vmlinuz-5.4.0-4-amd64 +KDUMP_INITRD=/var/lib/kdump/initrd.img-5.4.0-4-amd64 This is a workaround for me with a "Asus-PRIME-B350M-A", but for a plain SATA SSD, and running testing. I just looked in upstream tracker and found this bug [2], but that might show another issue. Kind regards, Bernhard [1] https://snapshot.debian.org/package/linux/5.4.19-1%7Ebpo10%2B1/ [2] https://bugzilla.kernel.org/show_bug.cgi?id=209351