NAK Re: [PATCH 0/4][SRU][U/OEM-5.14] Fix No Screen after login to Desktop on sku with 3840x2400 panel
Timo Aaltonen
tjaalton at ubuntu.com
Tue Dec 14 15:22:48 UTC 2021
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
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