[Bug 94024] New: GMA X4500HD is limited to 1024x768 over HDMI when booting to 4.4.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94024

            Bug ID: 94024
           Summary: GMA X4500HD is limited to 1024x768 over HDMI when
                    booting to 4.4.1
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: da_audiophile at yahoo.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121552
  --> https://bugs.freedesktop.org/attachment.cgi?id=121552&action=edit
dmesg under 4.3.5

Upon updating to linux-4.4.1 from linux-4.3.5, Xorg is unable to run in the
native 1920x1080 resolution and instead defaults to 1027x768.  Downgrading back
to the 4.3 series kernel fixes this problem.

System architecture: x86_64
Kernel version: 4.4.1
Linux distribution: Arch
Mother board model: GA-EG45M-UD2H with onboard Intel GMA X4500HD
Display connector: HDMI

Distro driver and Xorg details:
xf86-video-intel 1:2.99.917+519+g8229390
libva-intel-driver 1.6.2
mesa 11.1.1
xorg-server 1.18.0

Attached are 4 files, matched pairs of dmesg+Xorg.log under 3.4.5 and 4.4.1
with the debug kernel flag 'drm.debug=0x1e log_buf_len=1M' in the grub line. 
Please let me know if you need additional info.

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