[Bug 68030] [Haswell] blank Screen with intel ddx on first use right after using fbdev ddx. Breaking SuSE Install

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68030

--- Comment #15 from Rodrigo Vivi <rodrigo.vivi at gmail.com> ---
The most strange thing I notice was when if fails

on intel_connector_dpms mode is != connector->dpms so it doesn't return on that
point like on every time that that works.

When it works:
[   22.003560] [drm:intel_crtc_set_config], MODE_CHANGED intel_crtc_set_config
8031
[   22.003574] [drm:intel_crt_dpms], VIVI: intel_crt_dpms 148
[   22.003578] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846
[   22.003581] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846
[   22.003584] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846
[   22.003586] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846
[   22.003589] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846

When if fails:
[  121.876256] [drm:intel_crtc_set_config], MODE_CHANGED intel_crtc_set_config
8031
[  121.876272] [drm:intel_crt_dpms], VIVI: intel_crt_dpms 148
[  121.876276] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3846
[  121.876277] [drm:intel_connector_dpms], VIVI: intel_connector_dpms 3859
[  121.876278] [drm:intel_modeset_check_state], VIVI: intel_modeset_check_state
7533
[  121.876279] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876281] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876282] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876283] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876285] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876286] [drm:intel_connector_check_state], VIVI:
intel_connector_check_state 3804
[  121.876287] [drm:intel_connector_check_state], VIVI: 
intel_connector_check_state 3804

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