[Bug 73943] [snb i915] DP Flicker

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73943

--- Comment #5 from Robert N <crshman at gmail.com> ---
(In reply to comment #4)
> Flickering due to underrun tends to be much more regular in its
> content, the screen either wholly (or more usually partially) flickers to
> black (or another colour), or sometimes part of the screen changes colour.
A single pane goes entirely black for a few seconds then comes back on. I don't
see any discoloration or tearing or any other visual artifacts.

> Sometimes this is associated with the position of the cursor (since that too
> is using display/memory bandwidth concurrently with the primary display
> plane).
I'll watch for any correlation between pointer and screens

> Is there any chance you can record the flicker using a phone?
I'll see what I can do to get this for you.

> if the flicker shows up in a screencast (i.e. when recording the frontbuffer
> of the display) that implies that the error is at an even higher level of
> the stack.
Any screencast apps that you recommend I try? Or just anything?

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