[Bug 90469] New: [i915] WARNING: CPU: 3 PID: 265 at drivers/gpu/drm/drm_irq.c:1130 drm_wait_one_vblank+0x177/0x180()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90469

            Bug ID: 90469
           Summary: [i915] WARNING: CPU: 3 PID: 265 at
                    drivers/gpu/drm/drm_irq.c:1130
                    drm_wait_one_vblank+0x177/0x180()
           Product: DRI
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: cornogle at googlemail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115800
  --> https://bugs.freedesktop.org/attachment.cgi?id=115800&action=edit
whole dmesg of 3.19.8.6 kernel boot on lenovo yoga 2 851f  with i915 modeset=1

tested with vanilla kernels on the lenovo yoga 851f

* 3.19.1 till 3.19.8 (currently the EOF)
* 4.0.0 till 4.0.2 
* 4.1.0-rc1 till 4.1.0-rc3

with i915.modeset=1 I got only a black screen

in the dmesg I saw also a previous error message

[    1.212294] [drm:intel_parse_bios] *ERROR* Unknown element
[    1.212306] [drm:intel_parse_bios] *ERROR* Sequence elements going beyond
block itself. Sequence block parsing failed


but I do not know if that is the root cause of the bug reported by the kernel.

If I boot without KMS, I can use the machine with Xorg but without acceleration
etc.
I need KMS for the Wayland  / weston setup.
I attach the whole dmesg and if more debugs or infos are needed, I will provide
them too

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