[Bug 111285] New: Unable to boot after update to 5.2.1 kernel (Skylake)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111285

            Bug ID: 111285
           Summary: Unable to boot after update to 5.2.1 kernel (Skylake)
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: mikael.widersten at tele2.se
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Lenovo X1 Skylake GT2 520 rev 7, i915 driver; openSUSE Tumbleweed 190730,
plasma 5.16.3, Qt 5.13.0, kernel-default 5.1.16-1

Booting into sddm fails following update from 5.1.16 to 5.2.1 (distribution
provided kernel). I have tried up to 5.2.4 and the problem persists. It is
impossible to boot without an attached external screen (via DP). After booting,
interacting through the external screen, the system behaves normal (but with an
unusable internal screen - it is frozen). Reverting back to 5.1.6 fixed the
issue.

With kernel 5.2.3 booting reaches all the way to sddm but screen is frozen and
unresponsive.

best,

/mikael

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