From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: * X-Spam-Status: No, score=1.2 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 340C7C54E8D for ; Mon, 11 May 2020 08:18:52 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 046B8206F5 for ; Mon, 11 May 2020 08:18:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="iJaxLGpO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 046B8206F5 Authentication-Results: mail.kernel.org; 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Mon, 11 May 2020 10:18:47 +0200 To: intel-gfx@lists.freedesktop.org From: Arno Message-ID: Date: Mon, 11 May 2020 10:18:47 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Language: en-US X-Provags-ID: V03:K1:ZKZH+Ty9LoLsSrD6/4//XbUpyzpoPppl9b9XABjpviHrCq1UoRw yjq9eLZrGZyvP/lEt1JoUQFa9a+tIt7SlwipBQWB7S2VXEVERt7icze/EKZtYzo92Etlt1p yqYcZ2xC1Gm39KIAmCs/rbfV2rH5+hr2CvBY8DX9d+HPYbIbbd05ShD5DMJUTw88cIOPpAp F1jNjVQWrnRX40upYkP6g== X-UI-Out-Filterresults: notjunk:1;V03:K0:n+A73Kx1Byg=:JNG7z4rzN0XTW4GtGZtyhw nueW7wT6pAN6PkR4byHWS9eiflur6l0BnyrigYMXXPxPnvXTfiCBlmXx0AYEW1DXuGFI4Ing1 WOa8DRyN4PEXeuGimAIabPGUUctysKk54hJ/G8ZhjJG5fkB4zMnKI/P28H44u2kDxMC0X+zmH vpyw86+p9GmjEuEqMdEh9xt65c5hJOjfEyyFfMGk2IvorGIfRk+qWFzVyuPG/cKNAW8XyaGOd //+B1mK58aTpwyongHuF6i94LkngQVCLBKrLk4k1qdm8vSzXENUhX8AdPI9nl5/0lves+cS1P mnX/e7fZGbwdac4ugY7JJy4iZQEj+OY1GY99lCx3c97wu0QV1zuO9ippLIMC70iJEG7vgck/N vZZfuui9n72VkQ5uFzeptRCmFnHMoHNDYkDaGprQhY7edjWlnOtrEFg/N+YeUNC/WKEpfSb3i SQdn7Cu48V+/Y8iTKChhPg7bC4QAFRsvziibSwcWZYWU4SSPUHfH265+23UhUyc9J8Z+WJ7Lz f5Dim4wtQ5dNpv/Rrsi9xA/MQjFxJlATRurXAotOiP3BRQYC+bysnYirURBPzNCd4o8RnjA61 7Zjf5nGE5+aVTgH8PjPGGAx7HmaxUimrd26GsahbPYZmQHq+3Oomzh3ny/zaTdzoyFjJH43Bo Qs11Ous5PiwLT27W17OzpOoNf9RcWBp45LwbX3DXt+2ZkdlVxuB6/s3OGAmeMiR3yj3ut6+hv JVFuhocRGO4kpLNlH2/O0gbnvr7aK+PURQ2yGBRomhrB1BaeJnY/sXd0vMgHtjr+4yITrP9Rq VFoV6XRSiH/aulOvJ8JSE0r1h+prwArdgl9EeYnnGd4vkRfk8JZHfZwXnVQs88ldxNYMnpy8M +i5o/OOYShKSh++ufdvgrqYjqiWkjfwkWLUpQX12sgnDN5DcUNRAQbGnqajwYqqaeJs2SBv92 4yUHvTzzEPMOKVg+TaohOGUTRTeTERykcsQ63gZDrWy6sR8gZUVz3i/CEH7MW0OYftYoNIj7F wiXDyuUUqOTsYNie+0WVOvJxPOIm0jkwFbXHl3swID3KuYWQ2agdxufC4c4GUB8hxvA6rrYzO 6UgTlkebDAeuHSPuWTBj2JCZlsm0MaPy/os/BnqxhuSDwuuNnhsM7kknfGH3YVUs58nG4/0YT io2hgI2I7GObjsdoHzMg79lxkdNFu/8tAAksbWJBVH8zBapDRNjLar3js7cjVcLyn1TAI= Subject: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1886098530==" Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This is a multi-part message in MIME format. --===============1886098530== Content-Type: multipart/alternative; boundary="------------94AC8D44052152EEF9C9990C" Content-Language: en-US This is a multi-part message in MIME format. --------------94AC8D44052152EEF9C9990C Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable My laptop (core m5-6y54) starts flickering after returning from Suspend (to RAM) or other commands touching the video driver (xrandr, powertop =2D-calibrate, ...) From kernel (tested with up to 5.7) I get the message: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun I added a bug with more details here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760 but guys from Ubuntu seems not able to help (as it is an upstream bug) !? This happend not in older kernels, but these have the problem not to go in power save states. So I think the fix of that https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489 causes this regression. Hope someone can help. For a=C2=A0 laptop it is better to have both - stan= dby and power saving. Thank you. Arno --------------94AC8D44052152EEF9C9990C Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable

My laptop (core m5-6y54) starts flickering after returning from Suspend (to RAM) or other commands touching the video driver (xrandr, powertop --calibrate, ...)

From kernel (tested with up to 5.7) I get the message:

[drm:intel_cpu_fifo_<= wbr>underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

I added a bug with more details here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760

but guys from Ubuntu seems not able to help (as it is an upstream bug) !?

This happend not in older kernels, but these have the problem not to go in power save states. So I think the fix of that=C2=A0

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489

causes this regression.

Hope someone can help. For a=C2=A0 laptop it is better to have bo= th - standby and power saving. Thank you.

Arno


--------------94AC8D44052152EEF9C9990C-- --===============1886098530== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx --===============1886098530==--