desktop-packages team mailing list archive
-
desktop-packages team
-
Mailing list archive
-
Message #80222
[Bug 1318119] Re: 14.04 corrupted graphics on cirrus (in qemu) [PATCH available]
** Changed in: xorg-server (Ubuntu Trusty)
Assignee: (unassigned) => Maarten Lankhorst (mlankhorst)
** Changed in: xorg-server (Ubuntu Utopic)
Assignee: (unassigned) => Maarten Lankhorst (mlankhorst)
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1318119
Title:
14.04 corrupted graphics on cirrus (in qemu) [PATCH available]
Status in “xorg-server” package in Ubuntu:
Fix Released
Status in “xorg-server” source package in Trusty:
New
Status in “xorg-server” source package in Utopic:
New
Bug description:
Running 14.04 LTS inside of qemu-kvm with its emulated cirrus gpu that
uses 24bpp frontbuffers causes broken rendering. 12.04 LTS worked fine
with no corruption on the same qemu-kvm host.
RHEL7 public beta had the same problem
(https://bugzilla.redhat.com/show_bug.cgi?id=1074106).
RHEL7 Release Candidate applied this patch:
http://patchwork.freedesktop.org/patch/18244/
From the patch:
"So we have 2 places where gpus with 24bpp frontbuffers are still
in use, cirrus (in qemu) and some early variants of the mgag200
server chips.
Currently we seem to get a lot of broken rendering in qt, mesa, gnome
if we expose the frontbuffer as 24bpp, nobody seems to test this
anymore upstream so client side apps are constantly broken, so lets
just make -modesetting expose a 24/32 shadow frontbuffer, and use
the shadow update hook to convert down to the actual 24bpp front,
this might be slower, but its correct and really anyone that wants
this already has enough problems."
Ubuntu version: 14.04 LTS
Effected version: xserver-xorg-video-modesetting-0.8.1-1build1
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1318119/+subscriptions