From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: Wondering about cirris and stdvga Date: Fri, 25 Nov 2016 19:17:31 +0100 Message-ID: <1480097851.2712.209.camel@citrix.com> References: <1479492255.3832.52.camel@citrix.com> <20161119105641.GL28824@reaktio.net> <1479719053.3832.103.camel@citrix.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4029480827386554269==" Return-path: Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cAL49-0007f5-7J for xen-devel@lists.xenproject.org; Fri, 25 Nov 2016 18:17:41 +0000 In-Reply-To: <1479719053.3832.103.camel@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Pasi =?ISO-8859-1?Q?K=E4rkk=E4inen?= Cc: Stefano Stabellini , Ian Jackson , Paul Durrant , ajax , "anthony.perard" , xen-devel , Roger Pau Monne List-Id: xen-devel@lists.xenproject.org --===============4029480827386554269== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="=-gk5waX6RFOmdvU9kPsA9" --=-gk5waX6RFOmdvU9kPsA9 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2016-11-21 at 10:04 +0100, Dario Faggioli wrote: > On Sat, 2016-11-19 at 12:56 +0200, Pasi K=C3=A4rkk=C3=A4inen wrote: > > 2) It'd good to create an upstream Wayland bugreport and > > investigate > > more about why cirrus is broken with Wayland. > >=20 > Sure, I can do that. >=20 An update. The discussion here has gone on a bit: https://bugzilla.redhat.com/show_bug.cgi?id=3D1227770 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). Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-gk5waX6RFOmdvU9kPsA9 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJYOIA7AAoJEBZCeImluHPuFh8P+gOG0ishVI7M1VRJd/ehD+4V S7Rl/WDMN0+clUk9+RgYuB19vYtrkzwA+xNSNvJtethkoB300FoYk1uuW3J/dOIV QyvIcAPnw6/JaESj4uHvFhDpPgatH5QDV/IcTL2n4/eg1TdZdZ5eKxt6B0fyCOqS gvD0nnOx2w9cxv1+QbPaofSgoVjY68UHFMUr2U9RuPvxsNAFpbk0zNS7TlUg2IoI DrTqVnflbq66sSYng0LN/IdJDsxcymLtNboZol4iJIPY/MFHLlfm7TjCGqpJTFup 8z5oE03I1VWP2pE/6q65zq8kF3gKQ1PFp0uDTAlbiv7USU9LrJPhqRzAsI5r+4np LKR+HsYb5L7KZCYqGMnifYFVPezeYdhJu9sx/zqixdI5NeDeWe1VrPLXLpuJex7r l12WPJhWWPrQJ8l6z4HdQkdaQIZGh1f9Q6M8/PFb2dTrXMFoJx/VJrdpaWynHlSb a5//O60E88LLtQGfdH3ct7UAwVQD06bdKVGR2bgga1BBmNvwZwDVKZnFZVUti3l2 UIszkvzt6xOQaLpLlhT21unrFGzWiW3joXdJdX0XSMbrOB/cYJ52WfWaZ1Dd25kp rOSG9mplu5Vza02+4mC5i8A2Ggf+R2O9yQa+m0ocvY8Z8JOFlYD5l+w0k7HJQeAy 8eLjhPHNQX0EVmOaUS08 =Q6j9 -----END PGP SIGNATURE----- --=-gk5waX6RFOmdvU9kPsA9-- --===============4029480827386554269== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVs IG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5v cmcveGVuLWRldmVsCg== --===============4029480827386554269==--