[Bug 75992] New: Display freezes & corruption with an r7 260x on 3.14-rc6

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=75992

          Priority: medium
            Bug ID: 75992
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Display freezes & corruption with an r7 260x on
                    3.14-rc6
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: edt@aei.ca
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Radeon
           Product: DRI

Created attachment 95520
  --> https://bugs.freedesktop.org/attachment.cgi?id=95520&action=edit
log of boot

I recently added a R7 260X to my system.  While the card works with 3.13 its
supposed work much better with 14-rc.  This is not the case.  My system is
unstable without radeon.dpm=0 which was the default in .13.  

linux 3.14-rc6 (with an up to date arch, stable X and mesa-git (10.2) mesa 10.1
and 10.0 also show very similar problems.

When X started I did notice some corruption.  There are sets of two rectangles
about of a height of 2 or 3 mm, width of 25m or so with a second about a cm
below.  The often occurs in chomium especially when scrolling.  Runing the 
unigine-sanctuary or unigine-tropics demo/benchmark programs also produce the
above problems and eventually stall.

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