Re: [Xen-devel] Wondering about cirris and stdvga

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Nov 25, 2016 at 07:17:31PM +0100, Dario Faggioli wrote:
> On Mon, 2016-11-21 at 10:04 +0100, Dario Faggioli wrote:
> > On Sat, 2016-11-19 at 12:56 +0200, Pasi Kärkkäinen wrote:
> > > 2) It'd good to create an upstream Wayland bugreport and
> > > investigate
> > > more about why cirrus is broken with Wayland.
> > > 
> > Sure, I can do that.
> > 
> An update.
> 
> The discussion here has gone on a bit:
> https://bugzilla.redhat.com/show_bug.cgi?id=1227770
> 
> The conclusion seems to be that:
> "cirrus (virtual) hardware is simply to old to run wayland."
> 
> And so this is (and will very likely remain) a 'WONTFIX' for cirrus, at
> least on Fedora.
> 
> I've also opened a thread on wayland-devel mailing list:
> https://lists.freedesktop.org/archives/wayland-devel/2016-November/0318
> 56.html
> 
> There, I learned that Wayland is not the component to blame, as Wayland
> is the protocol. So, in our case, the 'bug' is most likely in
> gnome-shell / Mutter.
> 
> That's not a good thing, though. In fact, just to cite a few sentences
> from the thread:
> 
> "Packed 24bpp is going to be pain, not least because I don't know of
> any clients which render in packed-24"
> 
> "The 24bpp paths in pretty much everything are also badly untested, so
> that's asking for trouble."
> 
> "you will need to test and fix every single Wayland compositor out
> there."
> 
> "I really think you'd be far far better off trying to figure out how to
> move off the legacy Cirrus emulation as soon as you can."
> 
> So, we can try seeing if I manage to get some logs out of Mutter to
> figure out the actual bug more precisely _but_, considering all that
> people have said both here and in the other forums, I think it would be
> better to spend that time figuring out how to switch (and document this
> for 4.8 and previous version, of course).

+1

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