From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
Subject: [Bug 106294] New: GM204/modesetting DDX: Odd corruption
(red backgrounds) introduced by Mesa
Date: Sat, 28 Apr 2018 11:07:44 +0000
Message-ID:
Bug ID
106294
Summary
GM204/modesetting DDX: Odd corruption (red backgrounds) intro=
duced by Mesa
Product
Mesa
Version
git
Hardware
x86-64 (AMD64)
OS
Linux (All)
Status
NEW
Severity
normal
Priority
medium
Component
Drivers/DRI/nouveau
Assignee
nouveau@lists.freedesktop.org
Reporter
freedesktop-bugs@theblob.org
QA Contact
nouveau@lists.freedesktop.org
I apologise if I have selected the wrong product for this bug,=
as I think I
probably have. If I need to open a new bug, please let me know.
I use an NVidia GeForce GTX 970, with kernel version 4.15.4-gentoo and the
modesetting driver in Xorg. (More detailed descriptions of packages install=
ed
at the bottom of this description.)
My distribution (Gentoo) has packages for Mesa 17.2.8, 17.3.8, and a few ot=
her
higher versions (currently marked as unstable). When I use Mesa 17.3.8 or
higher, I see odd types of corruption involving red backgrounds on menus and
widgets, and some checkboxes appear unticked when they should be ticked. I
recorded this behaviour using OBS:
* Incorrect behaviour on 17.3.8 and higher:
https://www.y=
outube.com/watch?v=3DpuSC7a_osw0
* Expected behaviour on 17.2.8:
https://www.y=
outube.com/watch?v=3DLbjCoIX4DKE
I dug out git and have confirmed that the bug still exists as of commit
https://cgit.freedesktop.org/mesa/mesa/commit=
/?id=3D8b7358fe4376aecee0c29ea622f88f9ef07e6b11
(the latest commit on master as of an hour ago or so).
After bisection, I discovered that the bug was introduced by
https://cgit.freedesktop.org/mesa/mesa/commit=
/?id=3Dfcbb93e860246375d03f280f927f79d3645a8988
, which is actually *before* the 17.2.x branchpoint. It turns out that this
commit was reverted in the 17.2.x branch in commit
https://cgit.freedesktop.org/mesa/mesa/commit=
/?id=3D17a3e4891bf4fa09785fe9d22db5c79a949004db
to fix bug #101983. This was not committe=
d to the 'master' branch, as the fixes
in master apparently would have been rather invasive. This explains why my
tests of 17.2.8 worked fine.
This issue only appears when using the "modesetting" DDX drivers.=
When using
the "nouveau" DDX drivers, the issue does not appear. (The "=
nouveau" DDX
drivers also fix other issues for me so I'll probably switch to using that =
from
now on for normal use, but I'm willing to switch back to help debug this is=
sue
if needed.)
System summary:
I have the following graphics card, as shown by lspci -nn:
> 01:00.0 VGA compatible controller [0300]: NVIDIA=
Corporation GM204 [GeForce GTX 970] [10de:13c2] (rev a1)
I am running Gentoo Linux with the sys-kernel/gentoo-sources-4.15.4 kernel,
with the following (relevant) packages installed:
* x11-base/xorg-server-1.19.5-r1
* x11-base/xorg-drivers-1.19 (with VIDEO_CARDS=3D"nouveau")
In my kernel configuration, CONFIG_DRM_NOUVEAU is set to "m".
Please let me know if you need any more information.