[Bug 105887] [GLK] no signal after switch resolution from 1080p at 23.98

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105887

--- Comment #104 from fatez <stefano.ruzzon at icloud.com> ---
(In reply to Clinton Taylor from comment #103)
> Version 3 of the patch has been sent to the intel-gfx mail list.
> 
> Changes:
> Delay increased to 100ms based on review feedback. 
> Confirm crtc_state->type is HDMI, so we don't delay for other output types.
>  
> https://patchwork.freedesktop.org/patch/233505/

I have the same issue;
I tried several kernels (4.15.0-23; 4.17.0-041700; 4.17.1-041701;
4.17.2-041702; 4.18.0-041800rc1; 4.18.0-041800rc2) - and even the last
available


[    2.744531] i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    2.745155] [drm] Finished loading DMC firmware i915/glk_dmc_ver1_04.bin
(v1.4)
[    2.745628] [drm] Applying Increase DDI Disabled quirk
[    2.748345] [drm] Initialized i915 1.6.0 20180514 for 0000:00:02.0 on minor
0
[    2.749844] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)

See here the NO SIGNAL : https://i.imgur.com/eawe700.jpg

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