[Bug 100700] [BYT] MinnowMAX jumbled display with i915 via micro-HDMI

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100700

--- Comment #23 from Li Zhou <li.zhou at windriver.com> ---
Today I do more tests about this issue:

(1)try [Option "AccelMethod" "[sna|blt|none]"] according to above suggestion:
I write a simple xorg.conf as below (if anything wrong, please let me know),
and change AccelMethod to sna, blt and none. The issue happens when setting to
sna, and doesn't happen when setting to blt and none.
Since there isn't enough time for me to do a long time test, every test is
about 1-2 hours.

cat /etc/X11/xorg.conf 
Section "Device"
   Identifier "igfx"
   Driver "intel"
   Option "AccelMethod" "sna"
EndSection

(2)try to use --enable-uxa instead of --enable-sna when configuring the source
code.
The issue happens when --enable-sna (default setting), and doesn't happen when
--enable-uxa (In a test for about 2 hours by now, and I will go on with this
uxa test over night.)

Since I haven't enough knowledge about graphic and the document on internet
about this is limited too, could the experts please give us some analysis about
this (about sna/blt/uxa)? 

BTW, I see "SNA issues" in https://wiki.archlinux.org/index.php/intel_graphics.
Not sure if it has anything to do with our issue.

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