[Bug 97363] [drm:ironlake_crtc_compute_clock [i915]] *ERROR* Couldn't find PLL settings for mode!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97363

--- Comment #5 from Robin Müller <rm1990 at gmx.de> ---
Created attachment 126021
  --> https://bugs.freedesktop.org/attachment.cgi?id=126021&action=edit
drm-debug-linux-4.7

I finally found how to configure the debugging for the drm module(s) \o/. After
doing this I found the reason for the different clock values:
For linux 4.6 I get these lines:
[drm:parse_lfp_panel_data] Found panel mode in BIOS VBT tables:
[drm:drm_mode_debug_printmodeline] Modeline 0:"1600x900" 0 100400 1600 1648
1680 1792 900 902 907 932 0x8 0xa
For linux 4.7 I get these lines:
[drm:parse_lfp_panel_data] Found panel mode in BIOS VBT tables:
[drm:drm_mode_debug_printmodeline] Modeline 0:"640x480" 0 25180 640 648 744 784
480 482 484 509 0x8 0xa

I attached the beginning of both logs for further infos. So it seems the code
that retrieves the available modes from the BIOS does something different
between these 2 versions.

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