From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-177.mta0.migadu.com (out-177.mta0.migadu.com [91.218.175.177]) (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 3C88F16DC24 for ; Sat, 31 Aug 2024 21:50:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725141058; cv=none; b=BSNTRyQZ/HC01R4jiICCTX73QmMkNrNaFilNx0iyJIf3RauES2ZP1flFXRJuoPzFFjvhkZfbtZMgIjMU3WE8u5FRCCbkA1Ub2hQzuCoTzxDClxYAsRR6c1LWMnLvcI1hVEijBISscEMWeKP1IGyNNvpk4TQ4CgUH8MnPNCbrs8M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725141058; c=relaxed/simple; bh=3wGrMnM2vclQhrcQmwGiVliT+rHB6JAHjVx5LHqeLCk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ZBIdJqJW6LfEMIJy3nBm4aAtMNpjhBDHJUFD8p81v/XhO2pftOYCQPZWxJtjhJFchFFAu0CUDNuTrZPwoHaf7MM5UkUZ9OaRrJRFN2xXImZiESSDpbrYubYRUMt1Pq5u439/iQOCAUTfYm+4lrRzfxXburYGRpAZofRpcY+FuXQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kuruczgy.com; spf=pass smtp.mailfrom=kuruczgy.com; dkim=pass (1024-bit key) header.d=kuruczgy.com header.i=@kuruczgy.com header.b=Epo4RKkb; arc=none smtp.client-ip=91.218.175.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kuruczgy.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kuruczgy.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=kuruczgy.com header.i=@kuruczgy.com header.b="Epo4RKkb" Message-ID: <1f6676ae-62bf-40e1-b93c-463fa7d04cef@kuruczgy.com> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kuruczgy.com; s=default; t=1725141053; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=oTTxbm5FRKBWZJPjYUBnkFj2GnM7Zwi1RSotZuqKSv0=; b=Epo4RKkbvgj0Pu3nc0WR0rnBMIqrltiBcOrQH60nPt+RmBRL4pTlEiqvDdGCqzQHLaQphA GxHcqdRBReY4Aby9hey2tRCLxkBRnlBjht5nKuPUJHYsGx3htSfPomMuRmcijkhmf5e5VH LA00B8U2KZCkpHSIrjeY0l+AmXfD9pU= Date: Sat, 31 Aug 2024 23:50:50 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [v2,1/2] drm/msm/dpu1: don't choke on disabling the writeback connector To: Leonard Lausen , Dmitry Baryshkov , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jeykumar Sankaran , stable@vger.kernel.org References: <20240802-dpu-fix-wb-v2-1-7eac9eb8e895@linaro.org> <0b2286bf-42fc-45dc-a4e0-89f85e97b189@lausen.nl> <56bf547a-08a5-4a08-87a9-c65f94416ef3@kuruczgy.com> <9d359542-bd16-4aba-88a8-0bdea1c1de44@lausen.nl> Content-Language: en-US X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: =?UTF-8?Q?Gy=C3=B6rgy_Kurucz?= In-Reply-To: <9d359542-bd16-4aba-88a8-0bdea1c1de44@lausen.nl> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Dear Leonard, I installed KDE. First, I ran it with the my regular kernel without this patch. The first interesting thing I notice is that the screen *does* come back after resume. (The error messages are still present though.) > Ack. Do you mean that Rob Clark also uses Yoga Slim 7x but does not face the "screen never comes back (always have to switch VT back-and-forth to bring it back)" issue? Yes, at least that's what I gathered from our conversations on IRC. But with the above in mind, I now suspect that this comes down to desktop environment differences. > It would be great if you can validate whether this patch breaks CRTC state (which includes the CTM state) on Yoga Slim 7x, or whether that is specific to the trogdor lazor (Chromebook Acer Spin 513), though it may require you to install KDE. Well "Night Light" seems to be even more broken under KDE. I went into System Settings, set it to "Always on night light", and tried to adjust the temperature slider. While adjusting the slider, the screen goes black, and only comes back after a few seconds. The color temperature does not change, no matter what I change the slider to. Afterwards I tried with this patch as well, but it produces the exact same behavior. Best regards, György