[Bug 87580] New: [BYT] testdisplay does not show every resolution on HDMI display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87580

            Bug ID: 87580
           Summary: [BYT] testdisplay does not show every resolution on
                    HDMI display
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jeff.zheng at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 111148
  --> https://bugs.freedesktop.org/attachment.cgi?id=111148&action=edit
dmesg

==System Environment==
--------------------------
I fail to find a good commit. 

Non-working platforms: Baytrail (test machine: x-bytm02)
Working platforms: Braswell, Pinetrail


==kernel==
--------------------------
3.18.0 commit b2776bf7149bddd1f4161f14f79520f17fc1d71d

==Bug detailed description==
-----------------------------
Monitor Manufacturer: ACER HS244HQ

[BYT] testdisplay does not show every resolution on HDMI display. Only ~5
resolutions show normally in total 34 resolutions. The display is blank for
most resolutions, there are several resolutions on which the display is
flashing.


==Reproduce steps==
---------------------------- 
1. ./testdisplay -a
2. check HDMI display.

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