[Bug 111294] New: [chv] on Lenovo Miix 320-10ICR Screen become black after Plymouth if microSD is inserted, error: [drm:intel_dp_aux_xfer [i915]] dp_aux_ch timeout status 0x71450064

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111294

            Bug ID: 111294
           Summary: [chv] on Lenovo Miix 320-10ICR Screen become black
                    after Plymouth if microSD is inserted, error:
                    [drm:intel_dp_aux_xfer [i915]] dp_aux_ch timeout
                    status 0x71450064
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: russianneuromancer at ya.ru
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 144942
  --> https://bugs.freedesktop.org/attachment.cgi?id=144942&action=edit
drm-tip dmesg with drm.debug=0x1e from Lenovo Miix 320-10ICR

Hello!

I find that inserted microSD somehow cause issues with starting graphical
session on Lenovo Miix 320-10ICR. Please look into attached log for more
details, check part with following error message:
[drm:intel_dp_aux_xfer [i915]] dp_aux_ch timeout status 0x71450064

It's visible that backlight is enabled, but gdm3 (with enabled / disabled
Wayland) doesn't render anything. Enabling / disabling Wayland and autologin
doesn't change anything.

drm-tip 2019-07-30 4040b4c4ab647422d82100c8b091d34b6a82f572 log with
drm.debug=0x1e log_buf_len=8M from boot with inserted microSD is attached. You
can look into log without inserted microSD in Bug 111293.

Lenovo Miix 320-10ICR
Ubuntu 19.04 x86_64

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