[Bug 96569] New: system freezes during boot, [drm:intel_dp_start_link_train [i915]] and [drm:intel_psr_work [i915]] ERROR

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96569

            Bug ID: 96569
           Summary: system freezes during boot,
                    [drm:intel_dp_start_link_train [i915]] and
                    [drm:intel_psr_work [i915]] ERROR
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: kernel at ireas.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 124583
  --> https://bugs.freedesktop.org/attachment.cgi?id=124583&action=edit
output of `journalctl -k` after freeze with option drm.debug=0xe

During or directly after the boot and before the tty login, the system freezes.
 It can only be shut down using Magic SysRQ.  The system log contains these
errors (full log attached):

[drm:intel_dp_start_link_train [i915]] *ERROR* failed to train DP, aborting
[drm:intel_psr_work [i915]] *ERROR* Timed out waiting for PSR Idle for
re-enable

The second error repeats multiple times per seconds, until the system is
shutdown.

The problem can be reproduced using Linux v4.7-rc3, drm-intel-nightly (8bf2b76)
and the current git/torvalds version (g9cbbef4).

Hardware: Toshiba Portege Z30-A notebook, no additonal devices connected
Linux version: Arch
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Graphics Controller (rev 0b)

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