[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Wondering about cirris and stdvga
On Mon, Mar 20, 2017 at 02:25:16PM +0000, Roger Pau Monne wrote: > On Mon, Mar 20, 2017 at 02:21:50PM +0000, Paul Durrant wrote: > > > -----Original Message----- > > > From: Roger Pau Monne > > > Sent: 20 March 2017 14:14 > > > To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > > > Cc: Dario Faggioli <dario.faggioli@xxxxxxxxxx>; Ian Jackson > > > <Ian.Jackson@xxxxxxxxxx>; Pasi Kärkkäinen <pasik@xxxxxx>; Stefano > > > Stabellini > > > <sstabellini@xxxxxxxxxx>; Paul Durrant <Paul.Durrant@xxxxxxxxxx>; Anthony > > > Perard <anthony.perard@xxxxxxxxxx>; xen-devel <xen- > > > devel@xxxxxxxxxxxxxxxxxxxx>; Roger Pau Monne <roger.pau@xxxxxxxxxx>; > > > ajax <ajax@xxxxxxxxxx> > > > Subject: Re: [Xen-devel] Wondering about cirris and stdvga > > > > > > On Fri, Mar 17, 2017 at 10:19:47AM -0400, Konrad Rzeszutek Wilk wrote: > > > > 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). > > > > > > > > > > > > Yes. Also as there does not seem to be any supported OS that > > > > _needs_ the old Cirrus OS to boot and function. > > > > > > Not that I oppose to change to stdvga, but what would happen to Windows > > > VMs > > > that suddenly change from cirrus to stdvga, is that going to trigger the > > > license invalidation stuff? AFAIK this happens when you change hardware, > > > but > > > maybe a VGA change doesn't trigger that because it's common for people to > > > upgrade VGA cards? > > > > > > > Changing anything that Windows considers part of the core system will > > invalidate a license but, as you say, the graphics device may not be core. > > There is another issue (which I just verified myself) which as that at > > least some versions of Windows (Server 2008 in my case) won't boot when > > using stdvga with qemu trad. > > IMHO, I would leave qemu-trad alone and just change the default gfx card for > qemu-xen. I don't see much point in touching anything in qemu-trad. Exactly. The patch I had was only for qemu-xen. > > Roger. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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