https://bugs.freedesktop.org/show_bug.cgi?id=104266
Bug ID: 104266
Summary: [polaris10][arm] blurred screen on AMD Radeon Pro WX
7100
Product: Mesa
Version: 17.2
Hardware: ARM
OS: All
Status: NEW
Severity: major
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-devel@lists.freedesktop.org
Reporter: ved...@miletic.net
QA Contact: dri-devel@lists.freedesktop.org
Created attachment 136175
--> https://bugs.freedesktop.org/attachment.cgi?id=136175=edit
Photo
>From ML Mesa-dev:
https://lists.freedesktop.org/archives/mesa-dev/2017-December/179186.html
https://lists.freedesktop.org/archives/mesa-dev/2017-December/179426.html
https://lists.freedesktop.org/archives/mesa-dev/2017-December/180001.html
Hi,
We met a problem on ubuntu17.10 for arm server with amdgpu (AMD RADEON PRO WX
7100), we use open source driver which are integrated in ubuntu17.10 (Mesa
17.2.2). And the architecture is AArch64-linux-gnu.
we install:
apt-get install xserver-xorg xinit xfce4 and mesa-utils glmark2
we start x server:
startx
and then the monitor shows the screen and the screen is blurred (something
wrong).
And I have tried some opengl applications, the output has same
problem.(something is missing or in the wrong place.)
But in a x86_64 architecture server, with same OS. The screen output is normal.
(I check xorg\DDX\mesa\libdrm etc.all the versions are the same with aarch64
server.)
What I have done:
1. I upgrade kernel to 4.15-rc2 ,upgrade DRM to 3.23,upgrade DDX to
1.40,upgrade mesa to 17.2.6, but the problem still exist.
2. I enable ‘shadowprimary’ option, the screen output became normal, but the
performance drop quickly——glxgears drop from 4800fps to 600fps, glmark drop
from 4300 score to 730 score. (We solve the glxgears segmentation fault problem
by add the compile flags: -fsigned-char. In arm platform, char variant default
to "unsigned-char", that makes problem of glxgears segmentation fault. But
after we recompile mesa with -fsigned-char. The screen output still
tearing(blurred). the display problem still exist.)
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