NAK Re: [PATCH 0/4][SRU][U/OEM-5.14] Fix No Screen after login to Desktop on sku with 3840x2400 panel

[Timo Aaltonen]

On 14.12.2021 7.11, Koba Ko wrote:
> BugLink: https://bugs.launchpad.net/bugs/1954728
> 
> [Impact]
> Got kernel report CPU pipe A FIFO underrun: soft,transcoder
> kernel: i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun: soft,transcoder,
> 
> [Fix]
> Fix has been landed on linux-next,
> 4fe7907f3775(drm/i915/display/adlp: Disable underrun recovery).
> Defeature the underrun feature for intel display gen13+.
> 
> [Test Case]
> 1. change resolution to 3840x2400
> 2. monitor works well and doesn't black out.
> 
> [Where problems could occur]
> low
> 
> Anusha Srivatsa (1):
>    drm/i915/step: s/<platform>_revid_tbl/<platform>_revids
> 
> José Roberto de Souza (1):
>    drm/i915/display/adlp: Disable underrun recovery
> 
> Lucas De Marchi (1):
>    drm/i915: Add release id version
> 
> Matt Roper (1):
>    drm/i915/dg2: add DG2 platform info
> 
>   drivers/gpu/drm/i915/display/intel_display.c | 34 +++--------
>   drivers/gpu/drm/i915/i915_drv.h              | 36 ++++++++++++
>   drivers/gpu/drm/i915/i915_pci.c              | 59 ++++++++++++++++++++
>   drivers/gpu/drm/i915/intel_device_info.c     | 16 +++++-
>   drivers/gpu/drm/i915/intel_device_info.h     |  8 +++
>   drivers/gpu/drm/i915/intel_step.c            | 54 +++++++++++++-----
>   6 files changed, 165 insertions(+), 42 deletions(-)
> 

This needs to land in jammy too, and if you rework the last commit you 
should be able to drop at least the one adding DG2 bits.

-- 
t