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

[bugzilla-daemon at freedesktop.org]

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

            Bug ID: 100700
           Summary: MinnowMAX jumbled display with i915 via micro-HDMI
           Product: DRI
           Version: DRI git
          Hardware: IA64 (Itanium)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jennifer.ito at windriver.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 130874
  --> https://bugs.freedesktop.org/attachment.cgi?id=130874&action=edit
Files used to build testcase in WRL8 environment.

This was originally found with a Wind River Linux 8 system. I have attached a
build.tar.gz file that was used to build the testcase. If the ability to build
a WRL8 system exists for whoever is assigned to this bug, please feel free to
contact me for information on how to build. While the testcase should be able
to be run on other versions of Linux, it may be difficult to build due to
dependencies.

In order to prepare for this bugzilla report, the latest drm-tip was used. 

Once you have the board booted, perform the following steps to see the problem. 
1. setting environment on target. 
a. login target and run "export DISPLAY=:0" 
b. ps -ef | grep X 
root 257 228 0 09:07 ? 00:00:00 xinit /etc/X11/xinit/xinitrc -- /usr/bin/X :0
-auth /.serverauth.228 
root 258 257 0 09:07 tty2 00:00:00 /usr/bin/X :0 -auth /.serverauth.228 
root 355 297 0 09:36 ttyS0 00:00:00 grep X 
c. copy /.serverauth.228 to /root/.Xauthority 
2. running xwininfo (such as xwininfo -root -tree). 
3. observing testcase to see if distorted screen occur when second widget
shows. This should show the behavior in the attached screenshot
(JumbledGraphics.png). 

I have attached minnowboard.tar.gz which includes some log files collected on
the target. 


root at localhost:~# uname -r 
4.11.0-rc4 
root at localhost:~# uname -m 
x86_64 

root at localhost:~# cat /proc/cpuinfo 
processor : 0 
vendor_id : GenuineIntel 
cpu family : 6 
model : 55 
model name : Intel(R) Atom(TM) CPU E3826 @ 1.46GHz 
stepping : 9 
cpu MHz : 535.095 
cache size : 512 KB 
physical id : 0 
siblings : 2 
core id : 0 
cpu cores : 2 
apicid : 0 
initial apicid : 0 
fpu : yes 
fpu_exception : yes 
cpuid level : 11 
wp : yes 
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syt 
bugs : 
bogomips : 2932.60 
clflush size : 64 
cache_alignment : 64 
address sizes : 36 bits physical, 48 bits virtual 
power management: 

processor : 1 
vendor_id : GenuineIntel 
cpu family : 6 
model : 55 
model name : Intel(R) Atom(TM) CPU E3826 @ 1.46GHz 
stepping : 9 
cpu MHz : 535.990 
cache size : 512 KB 
physical id : 0 
siblings : 2 
core id : 2 
cpu cores : 2 
apicid : 4 
initial apicid : 4 
fpu : yes 
fpu_exception : yes 
cpuid level : 11 
wp : yes 
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36
clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syt 
bugs : 
bogomips : 2943.00 
clflush size : 64 
cache_alignment : 64 
address sizes : 36 bits physical, 48 bits virtual 
power management:

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