[Bug 105549] Black/blank screen at boot (last message line: fb: switching to inteldrmfb from EFI VGA) unless i915.modeset=0 is set

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105549

--- Comment #30 from Seweryn Kokot <sewkokot at gmail.com> ---
Created attachment 138749
  --> https://bugs.freedesktop.org/attachment.cgi?id=138749&action=edit
dmesg, kernel 4.15.15, with patch, drm.debug=14

I attach dmesg from kernel 4.15.15 after applying this patch
https://patchwork.kernel.org/patch/10003565/

I confirm that the two lines are present in dmesg:

[    7.087856] [drm:i915_driver_load [i915]] Found SunrisePoint LP PCH
[    7.088526] [drm:intel_device_info_dump [i915]] i915 device info:
platform=KABYLAKE gen=9 pciid=0x5917 rev=0x07

I also confirm that applying this patch and without nomodeset or i915.modeset=0
I can now see the login prompt (so no black/blank screen at boot anymore)

However I cannot downgrade BIOS from 1.1.9 to 1.0.8.

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