[Bug 92932] New: [SKL] intel_dp_start_link_train ERROR 5.4Gbps rate without HBR2/TPS3 support

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92932

            Bug ID: 92932
           Summary: [SKL] intel_dp_start_link_train ERROR 5.4Gbps rate
                    without HBR2/TPS3 support
           Product: DRI
           Version: XOrg 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: timur.alperovich at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

When starting, I noticed the following error in dmesg:
[    8.086667] [drm:intel_dp_start_link_train [i915]] *ERROR* 5.4 Gbps link
rate without HBR2/TPS3 support

The error is repeated if the laptop is suspended and brought back from suspend. 

distribution: Debian (testing)
uname -m: x86_64
uname -r: drm-intel-nightly build; the last commit is: 4c2531304c0a
model: Dell XPS 9350 (i7-6500U)
no external display connected

Will attach the dmesg debug output.

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