[Bug 103494] New: Inescapable system freeze on initial X startup drm/i915

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103494

            Bug ID: 103494
           Summary: Inescapable system freeze on initial X startup
                    drm/i915
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: aun.sswick at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 135138
  --> https://bugs.freedesktop.org/attachment.cgi?id=135138&action=edit
lspci

Upon system boot into X a complete hang on black screen is experienced every
time after recent (4.13+) kernel upgrade.  SysRq keys do not function after
this point.  Unfortunately was not able to extract any logs from hung system,
no logs are written to disk or found after power cycle.

Architecture: i686
Kernel Version: anything after 4.12
Distro: Ubuntu 17.04
Machine: Laptop Aspire one 1-431 (AO1-431_106D_1.11)

Tested with drm-tip nightly: Same result.

Bisect Results:
3dc38eea665f383c84cc8d858b9a7645c0b29c54        bad
72affdf                                         good
309663ab7b4f0de1540aff212fd067e3dd92acf3        bad
8ee7c6e23bb1b3c37ef27e81395db056bd7eac53        bad
ec151f31cd81cc99b957d6b528709d6ecfb25801        bad
1188bc66eb33e64ac7452b5acd62ce0395204148        good
f0a22974acbdd17b03cff4bdee880e4f08cccf6d        bad
9231da70b338b336b982c74fad4afab5b55e6534        bad
8448661d65f6f5dbcdb9c5cba185b284f2464b65        bad
cbc4e9e6a6d31fcc44921d2be41104425be8ab01        good

dad at octo:~/src/linux$ git bisect good
8448661d65f6f5dbcdb9c5cba185b284f2464b65 is the first bad commit

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