4.8-rc1: it is now common that machine needs re-run of xrandr after resume

[Jani Nikula]

On Wed, 14 Sep 2016, Pavel Machek <pavel at ucw.cz> wrote:
> For the "sometimes need xrandr after resume": I don't think I can
> bisect that. It only happens sometimes :-(. But there's something
> helpful in the logs:

> [ 1856.218863] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
> invalid, remainder is 130
> [ 1856.218863] Raw EDID:
> [ 1856.218863]     00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
> invalid, remainder is 130
> [ 1856.218863] Raw EDID:
> [ 1856.218863]     00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
> invalid, remainder is 130
> [ 1856.218863] Raw EDID:
> [ 1856.218863]     00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863] [drm:drm_edid_block_valid] *ERROR* EDID checksum is
> invalid, remainder is 130
> [ 1856.218863] Raw EDID:
> [ 1856.218863]     00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863]     ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> [ 1856.218863] i915 0000:00:02.0: HDMI-A-1: EDID block 0 invalid.

Pavel, Martin, do you always see this when the display fails to resume?
Is it HDMI/DVI for both of you?


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center