[Bug 82750] New: [BDW Bisected]Screen is frozen since kernel boot.

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Aug 18 00:54:57 PDT 2014


https://bugs.freedesktop.org/show_bug.cgi?id=82750

          Priority: medium
            Bug ID: 82750
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Bisected]Screen is frozen since kernel boot.
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: critical
    Classification: Unclassified
                OS: Linux (All)
          Reporter: lei.a.liu at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 104800
  --> https://bugs.freedesktop.org/attachment.cgi?id=104800&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. Good commit:82e3b8c130f046b7dd1e7898c10e40edb52fee6d
Non-working platforms: Broadwell

==kernel==
--------------------------
-nightly: 186631131a9289dad22f51315d78b9b6ac5b425f (failed)
    drm-intel-nightly: 2014y-08m-15d-14h-55m-27s integration manifest
-queued: ecca3fd0ea82c45b558f68b1ff3bf6685b443ab1 (failed)
    drm/i915/bdw: Enable Logical Ring Contexts (hence, Execlists)
-fixes: 103ae732ad26141515f109c80b5c1ced16e457c3 (worked)
    drm/i915: Don't try to enable cursor from setplane when crtc is disabled

==Bug detailed description==
-----------------------------
Screen frozen as picture attached. testdisplay -i can't detect eDP monitor.

==Reproduce steps==
---------------------------- 
1. boot machine up

==Bisect results==
Bisect shows: ecca3fd0ea82c45b558f68b1ff3bf6685b443ab1 is the first bad commit
commit ecca3fd0ea82c45b558f68b1ff3bf6685b443ab1
Author:     Oscar Mateo <oscar.mateo at intel.com>
AuthorDate: Thu Jul 24 17:04:49 2014 +0100
Commit:     Daniel Vetter <daniel.vetter at ffwll.ch>
CommitDate: Fri Aug 15 14:48:25 2014 +0200

    drm/i915/bdw: Enable Logical Ring Contexts (hence, Execlists)

    The time has come, the Walrus said, to talk of many things.

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