[Bug 96721] i915: black screen with kms enabled on baytrail system

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96721

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEEDINFO                    |RESOLVED

--- Comment #5 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to sassmann from comment #4)
> With 4.10-rc1 from drm-tip the problem goes away. Checking dmesg the only
> i915 error remaining is
> [   14.962833] i915 0000:00:02.0: vgaarb: changed VGA decodes:
> olddecodes=io+mem,decodes=io+mem:owns=io+mem
> [   14.964726] [drm:pwm_setup_backlight [i915]] *ERROR* Failed to own the
> pwm chip
> not sure if this is something to worry about?

Related to backlight control. You may need to worry about it, but it's another
bug. See bug 96571.

> However with that kernel the touchscreen no longer works because the hid
> device fails to probe
> [   35.152943] i2c_hid: probe of i2c-FTSC1000:00 failed with error -121
> but that's probably a separate issue.

Unrelated to graphics.

Sorry it's not all rosy, but I'm closing this particular bug fixed. Thanks for
the report, and thanks to Hans for the fixes.

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