[Bug 93332] New: [BAT IGT] kms_force_connector_basic prune-stale-modes fails to reverted to base_edid

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93332

            Bug ID: 93332
           Summary: [BAT IGT] kms_force_connector_basic prune-stale-modes
                    fails to reverted to base_edid
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: ville.syrjala at linux.intel.com
          Reporter: marius.c.vlad at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org
     i915 platform: ALL

Commit 870548b6533318b10c414663ea4ad2af01bab8b9 added a new test
'prune-state-modes'.

When reverting back to default EDID, base_edid gets corrupted.

IGT-Version: 1.13-g6672da5 (x86_64) (Linux: 4.4.0-rc4+ x86_64)

with alt_edid:
mode=0, H=1400, V=1050
mode=1, H=1920, V=1080
mode=2, H=1280, V=720
mode=3, H=1024, V=768
mode=4, H=800, V=600
mode=5, H=800, V=600
mode=6, H=848, V=480
mode=7, H=640, V=480
mode=8, H=640, V=480

with base_edid:
mode=0, H=1920, V=1080
mode=1, H=1400, V=1050
mode=2, H=1920, V=1080
mode=3, H=1280, V=720
mode=4, H=1024, V=768
mode=5, H=800, V=600
mode=6, H=800, V=600
mode=7, H=848, V=480
mode=8, H=640, V=480
mode=9, H=640, V=480

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