[Artful][OEM][PATCH 0/1] Fix the issue of external hdmi on

Aaron Ma aaron.ma at canonical.com
Sat Dec 16 09:00:54 UTC 2017

BugLink: https://bugs.launchpad.net/bugs/1738523

External HDMI monitor failed to show screen on Lenovo X1 yoga/carbon

Add a workaround to bypass this TMDS_OE writing on identified laptop models.

[Test Case]
Tested on ThinkPad X1 yoga 2nd/3rd and Carbon 6th, external HDMI output

[Regression Potential]
Low, it limits to ThinkPad specific laptops.

Aaron Ma (1):
  drm/i915: Disable writing of TMDS_OE on Lenovo ThinkPad X1 series

 drivers/gpu/drm/i915/i915_drv.h   |  3 +++
 drivers/gpu/drm/i915/intel_bios.c | 18 ++++++++++++++++++
 drivers/gpu/drm/i915/intel_hdmi.c |  5 +++++
 3 files changed, 26 insertions(+)


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