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QEMU VGA VMWARE BLACK SERIAL
QEMU VGA VMWARE BLACK UPDATE

Turns off QEMU’s built-in graphics emulation so Linux would use the passed through GPU. This is needed because QEMU is running in a terminal, and can’t capture keyboard input normally. Tells QEMU to read virtual keyboard input directly from my real keyboard. object input-linux,id=kbd,evdev=/dev/input/by-path/platform-i8042-serio-0-event-kbd

QEMU VGA VMWARE BLACK SERIAL

This disables the usual QEMU window, and also enables the virtual machine’s serial port for viewing boot progress. This was harder than I thought: just running rmmod i915 gives the error:Ġ0:02.0 VGA compatible controller : Intel Corporation HD Graphics 5500 (rev 09)Īllows QEMU to start in an SSH terminal. So I keep the GPU on during boot, and only disable it just before starting QEMU. However, I’m using a Live USB, and I needed the screen to configure Wi-Fi and enable SSH. Usually, the GPU is disabled at boot up, either with the nomodeset boot argument or with a modprobe blacklist.

Press Ctrl-X to boot with the new argument.

Add intel_iommu=on to the end of the linuxefi line.

Hit E when the boot screen appears to edit boot arguments.

To enable PCI passthrough, I had to turn on the IOMMU at boot. I tested this on Fedora Workstation 29’s Live image, booted from a USB drive. With passthrough enabled, I was able to boot a Linux VM in QEMU with full GPU acceleration. I tried GPU passthrough with the integrated graphics of my Intel Broadwell CPU. GPU passthrough allows a virtual machine to use the full power of the host’s GPU to speed up graphical performance. I wrote a script to unload the Intel driver while avoiding the “Module i915 is in use” error, and explored what QEMU GPU passthrough options actually do. Here’s how I setup GPU passthrough with an Intel Broadwell GPU on Fedora 29. I’m leaving this up in case this helps someone with a non-Broadwell integrated GPU. You’ll see Disabling IOMMU for graphics on this chipset in the dmesg, and the integrated GPU will not be visible to vfio.

QEMU VGA VMWARE BLACK UPDATE

UPDATE 2020-09: This no longer works for Intel Broadwell integrated GPUs as of Linux 5.4.