[Bug 110317] New: Second display does not show up on dock of Lenovo Helix 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110317

            Bug ID: 110317
           Summary: Second display does not show up on dock of Lenovo
                    Helix 2
           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: udippel at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 143855
  --> https://bugs.freedesktop.org/attachment.cgi?id=143855&action=edit
dmesg with debug options, on dock not bringing up HDMI monitor

I'd like to refer to Bug 109750. This is not quite a duplicate, since it uses a
very different dock. It shows a different behaviour, too, but likewise to said
other report, in the end it doesn't bring up the display reliably. 
Otherwise it is an identical machine to the one in Bug 109750.

(Alas, no, I have no latest kernel/drmtip installed here. But since this never
made any difference in all my DRM/Intel bugs, I do permit myself to start
without this hassle.)

In this case, I plugged in the HDMI-monitor into that dock some minutes into
the session. It shows some working activities before it fails, and never brings
up the monitor in System Settings.

(Monitor plugged in)
[  929.894507] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  929.894512] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  930.095015] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  930.095020] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  930.403505] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  930.403513] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  931.038495] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  931.038500] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  931.724539] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  931.724544] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  932.388490] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  932.388495] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  933.042571] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  933.042577] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
[  933.700501] evdi: [D] evdi_detect:88 (dev=1) poll connector state: connected
[  933.700506] evdi: [D] evdi_painter_get_edid_copy:227 (dev=1) EDID valid
(and so forth)

I order to help I started the standard kernel with the standard debug
instructions, with the monitor plugged in from the very beginning. The dmesg
can be found as attachment.

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