[Bug 80073] New: [IVB] GPU device frequency can't increase to the largest one

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80073

          Priority: medium
            Bug ID: 80073
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [IVB] GPU device frequency can't increase to the
                    largest one
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    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 101131
  --> https://bugs.freedesktop.org/attachment.cgi?id=101131&action=edit
test script

==System Environment==
--------------------------
Platform: Ivybrige
kernel:   (drm-intel-next-queued)868d665b43473e230d560d5186535270a3d57a19

==kernel==
--------------------------
-nightly: b438e8793c6d18b0998d75cdf8115a5898ed21d1 (fail)
    drm-intel-nightly: 2014y-06m-13d-22h-09m-12s integration manifest
-queued: 868d665b43473e230d560d5186535270a3d57a19 (fail)
    drm/i915: Fix memory leak in intel_dsi_init() error path
-fixes: 223a6f2b975ab35d93270ea1d4fb6e0ac6b27fe6 (fail)
    drm/i915/bdw: remove erroneous chv specific workarounds from bdw code


==Bug detailed description==
---------------------------
 GPU device frequency can't increase to the largest one. It stay on lowest
frequency. Get  GPU current frequency from /sys/class/drm/card0/gt_cur_freq_mhz

==Reproduce steps==
---------------------------- 
1. ./gfxturbo.sh (I attach this script)

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