[Intel-gfx] Flickering i915

[Jesse Barnes]

On Wed, 05 Aug 2009 11:59:27 +0100
Chris Wilson <chris at chris-wilson.co.uk> wrote:

> [drm:intel_update_watermarks], plane B (pipe 1) clock: 32285
> [drm:intel_get_fifo_size], FIFO size - (0x00001d9c) A: 28
> [drm:intel_get_fifo_size], FIFO size - (0x00001d9c) B: 31
> [drm:intel_calculate_wm], FIFO entries required for mode: 0
> [drm:intel_calculate_wm], FIFO watermark level: 26
> [drm:intel_calculate_wm], FIFO entries required for mode: 6
> [drm:intel_calculate_wm], FIFO watermark level: 23
> [drm:i9xx_update_wm], FIFO watermarks - A: 26, B: 23
> [drm:i9xx_update_wm], self-refresh entries: 12
> [drm:i9xx_update_wm], Setting FIFO watermarks - A: 26, B: 23, C: 2,
> SR 83

Looks like it tried to set a fairly small mode on plane A first, then
switched over to LVDS where it's apparently setting another fairly low
resolution/refresh rate mode?  What mode is on your panel?

Either way, 6 seems like a pretty low number for this machine, maybe
we're shifting it down too far on your chipset.

-- 
Jesse Barnes, Intel Open Source Technology Center