[Bug 104807] blank screen after drm initialization - trekstor twin 10.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104807

--- Comment #11 from Hans de Goede <jwrdegoede at fedoraproject.org> ---
p.s.

Looking at your logs more, it seems that you're not building the axp20x mfd
code into the kernel, as the help text for MFD_AXP20X_I2C i2c says:

          Note on x86 this provides an ACPI OpRegion, so this must be 'y'
          (builtin) and not a module, as the OpRegion must be available as
          soon as possible. For the same reason the I2C bus driver options
          I2C_DESIGNWARE_PLATFORM and I2C_DESIGNWARE_BAYTRAIL must be 'y' too.

So please make sure you've those and that you've also enabled
XPOWER_PMIC_OPREGION.

Related: are you building i915 into your kernel, or is it a module. If it is
builtin please make it a module, there may be probe ordering issues otherwise.

This message:

axp20x-i2c i2c-INT33F4:00: AXP20x variant AXP288 found

Should be in your logs before any i915 drivers *and* the PWM error needs to be
gone.

This alone might very well be enough to fix this...

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