On Wed, Aug 07, 2019 at 09:55:02AM -0600, Chris Murphy wrote:
> >
> > I use the default GNOME desktop, using Wayland with Intel graphics. I
> > have a web browser, a terminal, and an editor running on desktop 1.
> > On desktop 2 (i.e., where Ctrl-Alt-Down takes you) I have virt-manager
> > running, with open windows for whichever VMs are currently in use.
> >
> > Yesterday, I updated my Fedora 30 machine. See the list of updated
> > packages below. After rebooting into the new kernel, I interacted
> > with a CentOS 7 VM for maybe 10 minutes. When I moved the mouse
> > pointer out of the VM window on desktop 2, the pointer vanished. That
> > is, the mouse pointer is now invisible on desktop 2, except when it is
> > inside the VM window. If I switch back to desktop 1, the mouse
> > pointer is visible, unless I move it onto the menu bar at the top of
> > the screen, where it also vanishes.
> >
> > Logging out and then back in restored the mouse pointer, but after
> > working with the VM for just a few minutes, the mouse pointer
> > disappeared again, exactly as before. Opening system settings brought
> > the mouse pointer back, for some reason.
>
> Weirdly I'm not seeing this on Fedora 30, I'm only seeing it on
> Rawhide, and I haven't figured out a pattern because it doesn't always
> happen.
>
> Also I'm only using Rawhide VM's in virt-manager, so I'm not certain
> the guest matters but that's speculative. Definitely it's related to
> virt-manager and intel graphics because I'm not using anything other
> than those two.
>
> My Fedora 30 laptop has
> 00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake
> GT2 [HD Graphics 520] [8086:1916] (rev 07) (prog-if 00 [VGA
> controller])
>
> My Fedora 31 laptop (with this transient issue) has
> 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd
> Generation Core Processor Family Integrated Graphics Controller
> [8086:0126] (rev 09) (prog-if 00 [VGA controller])
>
> So it might be a controller specific bug, possibly kernel regression.
> But I'm not sure what components are responsible for the drawing of
> the pointer, and how it's negotiated when it transitions a
> virt-manager guest window, and all the ways that could cause confusion
> in a way to make the pointer vanish.
it.
Cheers,
Peter
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