Blank Screen
mackdosh opened this issue · comments
Hello, I do not use github often so I do not know if this is where I post questions. I am trying to do single amdgpu passthrough and I am sure that I have everything set correctly in my files. I have already updated grub, I did everything correctly for the virt-manager qemu vm. It must have something to do with my start file, but I do not see the issue. I also, can not ssh in to find the issue. Basically, when I start the vm the screen goes black, then I see my TTY with the x org process killing itself, then my monitor goes blue, then the screen goes black and nothing happens after. I am using gentoo linux so my files may be different than someone on ubuntu, just saying. Here is my start script, which I blurred some info which is just the linux username and my detach ids which are set correctly so no worries about those.
Edit: I forgot to mention my gpu is the Rx 550, my cpu is the AMD 5 5600x, and I am using DWM as my window manager
Remove the line under # Unbind EFI-Framebuffer.
Sorry for the late reply
In my case it was because I was booting the host system with Compatibility Support Module (CSM) enabled, i.e. the legacy BIOS. By booting my Linux install with a plain UEFI bootloader (after ensuring CSM is completely disabled) it worked straight away.
Even if you boot via EFI it won't work if CSM is enabled.
These errors in dmesg were driving me crazy even if the configuration was perfect:
vfio-pci 0000:03:00.0: No more image in the PCI ROM
vfio_ecap_init: hiding ecap 0x19@0x270
Hope it helps anyone else finding this through a search engine, it would have come in handy three hours ago.