From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B621E3AFCF1 for ; Tue, 29 Sep 2026 08:15:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790669749; cv=none; b=UvOxMofN+ZjltXflcgDowxRwZJgsRT0/zZ3TP0MX+8p3fSLLhGGthn7ny2kuqzKLAJfvAJDD4jIy/fxGvgRsbv90CVkD4J/29YnTh4qRZJiRRZTwCo/zV92x52PhxgZInew5QamvwYwwe+kgMskiOdN6eLWvvdVbdz4vStYbHos= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790669749; c=relaxed/simple; bh=YdF4mJof0XqZs+KpPAmlOR4G7NNz9W4iRsbMHUHao2E=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=kW/b1KWvJdCRuwIhPotGnIEoVeLltFhMLEUzzC0rU+Un1ih8rq+ww9RPJ8QckzYqOyumxobk9g4cSEttlDe+rK9VideT0uvEOkf3R7SeDnzvfVpfEElpL0okZA4x93CbxJr4obMnynuZzt9K8cpemRKt7EhRifWWd0cveDBYIkE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vjR/ESDi; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vjR/ESDi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AE9851F000FF; Tue, 29 Sep 2026 08:15:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1790669748; bh=r+q/dSvCPJ20cuEjfzX1SrNz4hcY/zeP9H8rfqSXBIo=; h=Subject:To:Cc:From:Date; b=vjR/ESDiSbCj8yrIwopcBMYG3XLpdl0i5Eg/R/lJO2EhQ1KeSldkExeqZ0FZ2Yepd aWUjZKEWOzEpoQIWAhVRnjBqQ+rMYtYhj1ROHJZfqOTUL7ymMU1du2BsVvb/NA7mrK ajQbdrF73Mis7o2Kr4UpVxU4ThWQn0Afe0oB/F7c= Subject: FAILED: patch "[PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus" failed to apply to 6.18-stable tree To: ankit.k.nautiyal@intel.com,annoycc@gmail.com,jani.nikula@intel.com,nemesa.garg@intel.com,stable@vger.kernel.org Cc: From: Date: Tue, 29 Sep 2026 10:15:42 +0200 Message-ID: <2026092942-evaluator-keenness-e26b@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.18.y git checkout FETCH_HEAD git cherry-pick -x 5271d81f99dd01d983d439930eb056952485e15e # git commit -s git send-email --to '' --in-reply-to '2026092942-evaluator-keenness-e26b@gregkh' --subject-prefix 'PATCH 6.18.y' 'HEAD^..' Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5271d81f99dd01d983d439930eb056952485e15e Mon Sep 17 00:00:00 2001 From: Ankit Nautiyal Date: Mon, 7 Sep 2026 09:15:55 +0530 Subject: [PATCH] drm/i915/quirks: Limit eDP rate to HBR2 on HP Pavilion Plus 14-ew1 The eDP panel on the HP Pavilion Plus Laptop 14-ew1xxx advertises HBR3 while leaving the TPS4 support bit clear. The output however flickers, once link is trained with HBR3. Until commit 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink doesn't support TPS4"") such sinks were capped at HBR2 by the TPS4 check which incidentally kept this panel stable. That check was reverted because other panels legitimately need HBR3 without advertising TPS4, and the per-machine QUIRK_EDP_LIMIT_RATE_HBR2 was introduced to handle the affected machines instead. Add the machine to the list of devices that need the QUIRK_EDP_LIMIT_RATE_HBR2. Fixes: 8c9006283e4b ("Revert "drm/i915/dp: Reject HBR3 when sink doesn't support TPS4"") Reported-by: Annoy Cc Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16743 Cc: # v6.18+ Tested-by: Annoy Cc Signed-off-by: Ankit Nautiyal Reviewed-by: Nemesa Garg Link: https://patch.msgid.link/20260907034555.2753846-1-ankit.k.nautiyal@intel.com (cherry picked from commit 550b703fdbb2a2022faa75b4b11ab135241afbd9) Signed-off-by: Jani Nikula diff --git a/drivers/gpu/drm/i915/display/intel_quirks.c b/drivers/gpu/drm/i915/display/intel_quirks.c index 33245f44c0d5..7d7db774d8c7 100644 --- a/drivers/gpu/drm/i915/display/intel_quirks.c +++ b/drivers/gpu/drm/i915/display/intel_quirks.c @@ -257,6 +257,9 @@ static struct intel_quirk intel_quirks[] = { /* Dell XPS 13 7390 2-in-1 */ { 0x8a52, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 }, + /* HP Pavilion Plus Laptop 14-ew1xxx */ + { 0x7d55, 0x103c, 0x8c31, quirk_edp_limit_rate_hbr2 }, + /* Xiaomi Book Pro 14 2026 */ { 0xb081, 0x1d72, 0x2424, quirk_disable_psr2 }, };