| Message ID | 20191113111322.741512-1-vicamo.yang@canonical.com |
|---|---|
| Headers | show |
| Series | UBUNTU: SAUCE: drm/i915: Fix detection for a CMP-V PCH | expand |
Missing target series. On 2019-11-13 19:13, You-Sheng Yang wrote: > From: You-Sheng Yang <vicamo@gmail.com> > > BugLink: https://bugs.launchpad.net/bugs/1852386 > > [Impact] > Bug 1849278 introduced a regression on some Comet Lake platforms that > device may have no video output on HDMI port. > > [Fix] > 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 > kernels. > 2. Boot affected platforms with HDMI cable connected to an external > monitor. > 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. > > 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(-) >
From: You-Sheng Yang <vicamo@gmail.com> BugLink: https://bugs.launchpad.net/bugs/1852386 [Impact] Bug 1849278 introduced a regression on some Comet Lake platforms that device may have no video output on HDMI port. [Fix] 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 kernels. 2. Boot affected platforms with HDMI cable connected to an external monitor. 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. 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(-)