[Intel-gfx] [PATCH] drm/i915: Dump the contents of the GTT

[Sedat Dilek]

On Wed, Aug 14, 2013 at 3:44 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> On Wed, Aug 14, 2013 at 03:02:37PM +0200, Sedat Dilek wrote:
>> On Wed, Aug 14, 2013 at 3:01 PM, Sedat Dilek <sedat.dilek at gmail.com> wrote:
>> > On Wed, Aug 14, 2013 at 2:52 PM, Chris Wilson <chris at chris-wilson.co.uk> wrote:
>> >> On Wed, Aug 14, 2013 at 02:31:24PM +0200, Sedat Dilek wrote:
>> >>> Requested output and dmesg files attached.
>> >>> ( Should I attach the one with "BROKEN" display - I mean w/o doing a
>> >>> re-login and display "REPAIRED"? )
>> >>
>> >> Yes please.
>> >
>> > Attached tarball contains:
>> >
>> > 130413 Aug 14 14:52
>> > dmesg_3.11.0-rc5-next20130814-1-iniza-small_drm-debug-6_0-before-relogin-lightdm-unity2d_VT-1.txt
>> > 145973 Aug 14 14:53
>> > dmesg_3.11.0-rc5-next20130814-1-iniza-small_drm-debug-6_1-before-relogin-lightdm-unity2d_X.txt
>> > 199199 Aug 14 14:55
>> > dmesg_3.11.0-rc5-next20130814-1-iniza-small_drm-debug-6_2_after-relogin-lightdm-unity2d_X.txt
>> >
>> > 79398 Aug 14 14:53
>> > i915_gem_gtt_drm-debug-6_1-before-relogin-lightdm-unity2d_X.txt
>> > 108374 Aug 14 14:55
>> > i915_gem_gtt_drm-debug-6_2_after-relogin-lightdm-unity2d_X.txt
>
> The PTE values do correspond with the stolen addresses for the
> framebuffer. So I am resonably confident that the driver is
> self-consistent at least. DSPSURF points to the right location in the
> GGTT and those entries point to the right location in stolen. The
> display on the other hand seems to be continuing to read from GGTT
> offset 0, and so the real framebuffer appears offset by a few lines.
>
> How about trying https://patchwork.kernel.org/patch/2841934/ ?

The same screen corruption (see also attached tarball).

- Sedat -
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