Re: [vfio-users] NVIDIA driver cause to black screen and can't launch desktop environment

2017-07-23 Thread Zhifeng Hu
> You are missing the PCIe Root Bridge, and attaching the GPU to it. Linux is > picky about that. > > Try with this: > > -device ioh3420,chassis=0,id=testbus \ > > -device > vfio-pci,host=01:00.0,multifunction=true,bus=testbus,addr=00.0,x-vga=on \ > -device vfio-pci,host=01:00.1,bus=testbus,addr

Re: [vfio-users] NVIDIA driver cause to black screen and can't launch desktop environment

2017-07-19 Thread Zir Blazer
>> I run QEMU with the following command: >> -device vfio-pci,host=01:00.0,x-vga=on -device vfio-pci,host=01:00.1 You are missing the PCIe Root Bridge, and attaching the GPU to it. Linux is picky about that. Try with this: -device ioh3420,chassis=0,id=testbus \ -device vfio-pci,host=01:00.0,

[vfio-users] NVIDIA driver cause to black screen and can't launch desktop environment

2017-07-19 Thread Zhifeng Hu
Hi all, I'm able to pass through a NVIDIA graphic card(GTX750 Ti) to RHEL 5.11 successfully, For performance reasons, I need to install NVIDIA's official driver, After installing NVIDIA's official driver, the guest system always encountered black screen and can't enter desktop environment. But I