Re: [Qemu-discuss] Using egl-headless with virtio-vga video device crashes the guest

[Frederik Carlier]

Hi Erik,

> From: Qemu-discuss <qemu-discuss-
> address@hidden> On Behalf Of Erik
> Skultety
> Sent: Wednesday, November 28, 2018 2:20 PM

> I tried to test egl-headless (combined with either SPICE or VNC) with virtio
> graphics (doesn't really matter whether I enable virgl or not, the result is 
> the
> same) which results in a guest crash. If I try a similar setup with SPICE 
> (using
> gl=on) it works as expected. Looking at the machine log libvirt produced 
> doesn't
> show anything useful apart from:

For what it's worth, I've been doing some experiments with egl-headless 
recently and here's what I've observed:
- On a headless server (i.e. without X11), qemu would crash (SIGSEV) when the 
VM entered graphics mode. I got a bit futher by applying a patch [1]
- The display is messed up after I soft reboot the machine. This happens on the 
RC versions of 3.1, as well
- I've observed a couple of scenarios in which the VM would crash and reboot, 
but I'm not sure how to debug these scenarios.

Frederik.

[1] https://groups.google.com/d/msg/kubevirt-dev/7xYZQtILpJM/Xhty8bsLAgAJ