[Bug 96631] New: i915 driver on Minnow board - 1920x1200 resolution not working

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96631

            Bug ID: 96631
           Summary: i915 driver on Minnow board - 1920x1200 resolution not
                    working
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: evinoth1206 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 124654
  --> https://bugs.freedesktop.org/attachment.cgi?id=124654&action=edit
HD resolution not getting enabled - log message with drm.debug=0x06

I am currently working on an embedded project using Minnowboard max. I
have builded a customized Linux kernel-v4.4 and using u-boot (latest
version) as Boot loader.

The VESA driver in the u-boot takes more time to initialize,so I have
disabled it. I am passing the kernel parameters "video=" to enable the
HDMI port to which a monitor is connected.

The monitor is connected via HDMI-DVI cable

The video parameter arguments "video=HDMI-A-1:1920x1200 at 60mD
video=VGA-1:d video=DP-1:d"

>From the dmesg I got to know that the 1920x1200 is not getting
supported or there is some probing issue

[    2.922671] [drm:drm_mode_prune_invalid] Not using 1920x1200 mode:
CLOCK_HIGH

and the resolution is set to '1024x768'

 [    3.153392] [drm:intel_dump_pipe_config] adjusted mode:
[    3.153399] [drm:drm_mode_debug_printmodeline] Modeline
0:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0

Do you have any idea why this is happening ?. I have attached the dmesg logs -
HD_resolution_not_working.txt

With no video parameters passed , I am seeing that the display is not coming
up.
Please note that in both cases if I enable the VESA driver in the u-boot its
working fine.

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