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[211.75.139.218]) by smtp.gmail.com with ESMTPSA id u5sm11790613pgm.60.2021.12.13.21.11.17 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Dec 2021 21:11:17 -0800 (PST) From: Koba Ko To: kernel-team@lists.ubuntu.com Subject: [PATCH 0/4][SRU][U/OEM-5.14] Fix No Screen after login to Desktop on sku with 3840x2400 panel Date: Tue, 14 Dec 2021 13:11:11 +0800 Message-Id: <20211214051116.18803-1-koba.ko@canonical.com> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" 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/_revid_tbl/_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(-)