Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8-rc3/
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https://bugs.launchpad.net/bugs/1867455
Title:
Having more than one AMD Radeon
** Package changed: linux-5.4 (Ubuntu) => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1867455
Title:
Having more than one AMD Radeon RX 580 installed will trigger a PCI
It appears the firmware is not loading, looking through the previous
logs it appears the firmware has never loaded during any of the previous
testing. The Ubuntu 19.10 VM is having the same problem as the Ubuntu
20.04 host.
root@r920-cmwhv52:~# grep smu /var/log/kern.log
Mar 13 22:40:40 r920-cmwhv
I noticed the follow in /var/log/kern.log when I passed through two
RX580 to the same Ubuntu 19.10 VM:
root@over-zfs-test-1:/var/log# grep amd kern.log
Mar 14 19:13:31 over-zfs-test-1 kernel: [0.00] Linux version
5.3.0-40-generic (buildd@lcy01-amd64-026) (gcc version 9.2.1 20191008 (Ubunt
With the amdgpu module blacklisted on the host hypervisor, I was able to
successfully passthrough the GPU to a separate Ubuntu 19.10 VM, one GPU
per VM. See attached screenshot. So I would say this demonstrates that
the physical hardware is fine and that this is a software problem.
** Attachment a
After blacklisting the amdgpu module via echo "blacklist amdgpu" >
/etc/modprobe.d/blacklist-amdgpu.conf && update-initramfs -u; the system
will let me boot all the way up with more than one RX580 installed
(currently two are installed). Running modprobe amdgpu after the system
was already booted c
** Attachment added: "Screenshot of console just before system reboot"
https://bugs.launchpad.net/ubuntu/+source/linux-5.4/+bug/1867455/+attachment/5336947/+files/rpviewer-28.png
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** Attachment added: "Screenshot of iDRAC Lifecycle Log"
https://bugs.launchpad.net/ubuntu/+source/linux-5.4/+bug/1867455/+attachment/5336948/+files/idrac-screenshot.png
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