[Bug 82655] New: [ivb] constant freezes - [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82655

          Priority: medium
            Bug ID: 82655
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ivb] constant freezes -
                    [drm:intel_dp_start_link_train] *ERROR* too many
                    voltage retries, give up
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: martin.x.andersen at gmail.com
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Experiencing this on numerous kernels, up to and including 3.16.0. It is making
the system unusable. The primary display is hooked up via DisplayPort.

Aug 14 09:06:10 tamarix kernel: [85208.516247] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 14 09:06:10 tamarix kernel: [85208.520082] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 14 09:06:10 tamarix kernel: [85208.523917] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.306929] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.312644] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 14 16:01:53 tamarix kernel: [110163.318410] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 15 09:57:49 tamarix kernel: [174748.187437] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 15 09:57:49 tamarix kernel: [174748.193163] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 15 11:00:12 tamarix kernel: [178493.607883] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up
Aug 15 11:00:12 tamarix kernel: [178493.613546] [drm:intel_dp_start_link_train]
*ERROR* too many voltage retries, give up

Sometimes one is able to get the desktop back by sending a hangup signal to the
WM, often times not.

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