[Bug 70461] [sna suse] ddx assertion hits

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70461

--- Comment #117 from Jiri Slaby <jirislaby at gmail.com> ---
(In reply to Chris Wilson from comment #116)
> A few possible valid causes: invalid tiling parameters or attempting to
> change tiling on a framebuffer object.
> But it is also likely to be an invalid -EIO reported by the kernel. Did you
> see anything in dmesg?

Oh, yeah:
[drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training
[drm:intel_dp_complete_link_train [i915]] *ERROR* failed to start channel
equalization

It was like a was moving monitor here and there. I turned it off, disconnected,
closed lid of laptop, connected. Laptop also suspended by closing the lid. So I
really don't know what triggered this... It definitely happened 7 seconds
before suspend. So we can exclude suspend at least.

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