[SRU][OEM-OSP1-B][PATCH v2 0/1] UBUNTU: SAUCE: drm/i915: Fix detection for a CMP-V PCH
vicamo.yang at canonical.com
Wed Nov 13 15:33:47 UTC 2019
Oh, right. Please note this is yet another fix to a critical regression
introduced by “[SRU][OEM-OSP1-B][PATCH] UBUNTU: SAUCE: drm/i915: Add new
CNL PCH ID seen on a CML platform”.
On 2019-11-13 19:23, You-Sheng Yang wrote:
> From: You-Sheng Yang <vicamo at gmail.com>
> BugLink: https://bugs.launchpad.net/bugs/1852386
> Bug 1849278 introduced a regression on some Comet Lake platforms that
> device may have no video output on HDMI port.
> A currently in-review patch
> https://patchwork.freedesktop.org/patch/340416 should be applied to
> correct PCH's identity and restore HDMI output.
> [Test Case]
> 1. Apply the patches to oem-osp1 kernel >= 1026 or Eoan/Focal generic
> 2. Boot affected platforms with HDMI cable connected to an external
> 3. Check if the monitor lights up when GDM service is started.
> This was verified in to victim platforms.
> [Regression Risk]
> Low. This should affects only systems with matching PCH hw that is
> currently affected by the regression to be fixed.
> v2: update cover letter title to include target series
> Imre Deak (1):
> UBUNTU: SAUCE: drm/i915: Fix detection for a CMP-V PCH
> drivers/gpu/drm/i915/i915_drv.c | 6 +++++-
> drivers/gpu/drm/i915/i915_drv.h | 2 +-
> 2 files changed, 6 insertions(+), 2 deletions(-)
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