[Bug 82831] New: gm45 render ring initialization error regression

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Wed Aug 20 01:36:20 PDT 2014


https://bugzilla.kernel.org/show_bug.cgi?id=82831

            Bug ID: 82831
           Summary: gm45 render ring initialization error regression
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.16.1
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: riccardo.magliocchetti at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Created attachment 147501
  --> https://bugzilla.kernel.org/attachment.cgi?id=147501&action=edit
dmesg with 3.14.16

Since 3.16.1 am getting this in dmesg and everything gl / video related looks
cpu bound.

[   16.660061] [drm:init_ring_common] *ERROR* render ring initialization failed
ctl 0001f001 (valid? 1) head 000020a0 tail 00000000 start 00193000 [expected
00193000]
[   16.660075] [drm:i915_gem_init] *ERROR* Failed to initialize GPU, declaring
it wedged

Up to 3.14.16 it works fine but i haven't checked 3.15

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