[Bug 96450] New: Modesetting causes the screen to black out forever

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96450

            Bug ID: 96450
           Summary: Modesetting causes the screen to black out forever
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: philip.fackler at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

See posts:
https://bbs.archlinux.org/viewtopic.php?id=209853
https://bbs.archlinux.org/viewtopic.php?id=208652
I believe the original poster on the second thread there was having a different
issue.

I am stuck using kernel 4.3.3 on Arch. With every version after (I have tried
up to 4.6.1; also note this is a problem on linux-lts now), I cannot boot
unless I disable KMS. With early KMS, I get 2-3 lines of boot before the screen
goes black. If I disable early KMS, then I see boot info for longer, but it
still goes black before it finishes. If I boot with 'nomodeset' I can boot
properly, but of course the graphics are slow desktop apps and widgets load
slowly. The Arch wiki actually says modesetting is mandatory for intel
graphics.

I encountered the same issue when booting from a Solus live usb: black screen
unless I boot with 'nomodeset'.

I'm using a Dell Inspiron 15 3552 with (from lspci):
VGA compatible controller: Intel Corporation Device 22b1 (rev 21)
which (from what I've internetted) is Cherryview/Braswell.

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