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    SubjectRe: WARN_ON's in i915_gem_tiling.c
    Hello.

    Bringing Eric into the loop here as he is listed as author of the
    i915_gem_tiling.c

    On Mon, 2009-06-15 at 09:06, Stefan Schmidt wrote:
    >
    > On Sun, 2009-06-14 at 17:33, Arjan van de Ven wrote:
    > >
    > > Rank 1: i915_gem_set_tiling (warning)
    > > Reported 830 times (3700 total reports)
    > > [gem] Failure in the tiling code
    > > This warning was last seen in version 2.6.30, and first seen in 2.6.29-rc2.
    > > More info: http://www.kerneloops.org/searchweek.php?search=i915_gem_set_tiling
    >
    > There seem to be more then one issue. I'm running into one of them here on a
    > Lenovo Thinkpad X200s. It's 2.6.30 and I enabled KMS the first time here. So I
    > can't tell if it is a regression.
    >
    > http://www.kerneloops.org/oops.php?number=207353

    http://www.kerneloops.org/raw.php?rawid=453362&msgid=

    and

    http://www.kerneloops.org/oops.php?number=453361

    Are looking similar to #207353 to me. That's the one I can easily reproduce by
    booting into an KMS enabled kernel. Without modsetting eveything is fine. Let me
    know if there are patches I should give a try.

    > The result is that the EDID data could not be read and the wrong screen size
    > set:
    > [ 45.524589] i2c-adapter i2c-3: unable to read EDID block.
    > [ 45.588200] i915 0000:00:02.0: DVI-D-2: no EDID data
    > [ 45.777251] [drm] TMDS-14: set mode 1360x768 13
    > [ 45.777261] [drm] TMDS-16: set mode 1360x768 13 <= Should be 1280x900 here
    >
    > Somehow the driver tries to use DVI1 and DVI2 while the display is connected to
    > LVDS1.
    >
    > stefan@excalibur:~$ xrandr
    > Screen 0: minimum 320 x 200, current 1360 x 800, maximum 8192 x 8192
    > VGA1 disconnected (normal left inverted right x axis y axis)
    > LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 261mm x
    > 163mm
    > 1280x800 60.0*+ 50.0
    > DVI1 connected 1360x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
    > 1360x768 59.8*
    > 1152x864 60.0
    > 1024x768 60.0
    > 800x600 60.3
    > 640x480 59.9
    > DVI2 connected 1360x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
    > 1360x768 59.8*
    > 1152x864 60.0
    > 1024x768 60.0
    > 800x600 60.3
    > 640x480 59.9

    regards
    Stefan Schmidt


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