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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D31F2C433F5 for ; Sat, 23 Oct 2021 21:03:51 +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 8441460F25 for ; Sat, 23 Oct 2021 21:03:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8441460F25 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bugzilla.kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DEDC26E07D; Sat, 23 Oct 2021 21:03:50 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7089A6E07D for ; Sat, 23 Oct 2021 21:03:49 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPS id 0F48860F93 for ; Sat, 23 Oct 2021 21:03:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1635023029; bh=5gfheNhrSwmM/p8yQFcTEMH9CLt25276Y1boQbVHHfM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=NTtGypwUQdI6vqtRmfowOpCLvi9OutXVb5nfz461LL2t6ZQIHHC5ypnObirW+Pe1F Qyb0CpLbu13M+eplb5CKc3QojVRMcLh7dBdbcveoYDvzmdlM0wH8+0kF1XWpHG6JN/ tHTZVDmkV7NFpySX2HWLhVNmM9mwWHUR2ntjn4eizkPdnWkzUP2nREkOLKRGDGxj7N qaFPliz5c0lx5KSn2higjADUe1dFsHqjcecuOtcD2B0FB9SrLVgbP5NXpAkplVnIuy sgn7Fl/xh8IxQ/9JbOfuGEmhDBNwXr3dgVsT2wg847UmA5BzMsaQnC6oisXX2gdtKc Up3zJ1f02TmWQ== From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 211807] [drm:drm_dp_mst_dpcd_read] *ERROR* mstb 000000004e6288dd port 3: DPCD read on addr 0x60 for 1 bytes NAKed Date: Sat, 23 Oct 2021 21:03:48 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Video(DRI - non Intel) X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: low X-Bugzilla-Who: matthew.william.berry@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=3D211807 Matt Berry (matthew.william.berry@gmail.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |matthew.william.berry@gmail | |.com --- Comment #11 from Matt Berry (matthew.william.berry@gmail.com) --- I'm seeing this when I use my work laptop (HP SKU 3YG73UC) with a Startech = DP KVM (sv231dpu2) on Ubuntu 20.04 (5.11.0-37-generic). It doesn't happen every time, but when I switch the KVM over I'll hear the fan kick on and when I switch the KVM back I'll see the following in `dmesg`. Given that it's a wo= rk laptop, I'll have to follow their kernel release cycle, but will report bac= k if I see it on newer kernels as they roll out. ``` sudo journalctl -b 0 | grep -i firmware | grep i915 Oct 12 14:44:59 u41fc3826021951.ant.amazon.com kernel: i915 0000:00:02.0: [= drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin (v1.4) sudo dmesg | egrep -vi 'audit|usb |hub |input: ' [941754.942373] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [941754.964462] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [941953.993504] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [942109.330113] loop12: detected capacity change from 0 to 1232 [942125.974833] loop13: detected capacity change from 0 to 337424 [942146.986960] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [942392.995237] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [942967.950060] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [942967.972573] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [942990.984072] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [943003.939382] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [943003.962504] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [943227.981538] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [943765.979086] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [943775.950453] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [943775.981195] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [944033.975975] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [945830.946882] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [945830.969342] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [946098.985432] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [947569.935525] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed [947569.957792] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed [947604.971146] [drm:drm_dp_mst_dpcd_read [drm_kms_helper]] *ERROR* mstb 000000003ba372b9 port 3: DPCD read on addr 0x4b0 for 1 bytes NAKed ``` --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=