[Bug 89980] [Regression] Graphical corruption after resuming from suspend (w/ dual monitor configuration)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89980

--- Comment #3 from falaca at gmail.com ---
Based on my debugging so far, it seems that mesa is the likely culprit.

Step #1: Fresh install of Ubuntu 14.04 (installed on a new, clean partition):
Linux 3.13 kernel -> Manually upgraded to Linux 4.0 mainline
Xorg 1.15.1
Mesa 10.1.3
xf86-video-ati 7.3
libdrm 2.4.56

Status: The bug is not present, and confirms that the issue is not with the
kernel.

----------

Step #2: Installed Ubuntu 14.04.2 hardware enablement stack:
Linux 4.0 (mainline)
Xorg 1.16.0
Mesa 10.3.2
xf86-video-ati 7.4
libdrm 2.4.56

Status: The bug is present.

----------

Step #3: I reverted to the original 14.04 packages, but compiled xf86-video-ati
7.4 from git.

Status: The bug is not present, and confirms (?) that the issue is not with
ddx.

----------

Step #4: I had trouble getting Ubuntu to work with Mesa compiled from git
(whenever I try to log in, I just get kicked back to the lightdm greeter), and
I couldn't upgrade Mesa from the Ubuntu repo without also upgrading Xorg, so I
upgraded Mesa from Oibaf PPA:

Linux 4.0 (mainline)
Xorg 1.15.1
Mesa 10.6 (oibaf-ppa)
xf86-video-ati 7.4 (git) (also tested 7.5.99 from oibaf-ppa)
libdrm 2.4.60 (oibaf-ppa)

Status: The bug is present. So it seems likely that the bug was introduced
somewhere between Mesa 10.1.3 and 10.3.2.

If I can figure out how to get Ubuntu to play nice with mainline Mesa compiled
from git (maybe if I figure out how to apply the Ubuntu patches), I can do a
bisect, but that's where I'm stuck as of now.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20150414/bc334b7f/attachment.html>