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=-4.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 49B4BC433EF for ; Sat, 18 Sep 2021 12:56:20 +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 D7EF76128A for ; Sat, 18 Sep 2021 12:56:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D7EF76128A 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 E0C746E098; Sat, 18 Sep 2021 12:56:18 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6ECA26E098 for ; Sat, 18 Sep 2021 12:56:18 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPS id EEC3461355 for ; Sat, 18 Sep 2021 12:56:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1631969778; bh=mir/1rqTvFOBLweYo3LEI8oNu8M1ngNzKyl46Qtyz44=; h=From:To:Subject:Date:In-Reply-To:References:From; b=IiOmtpk1+RSdAOdwIGEhtO1ckaEC8bcgg/CscIrWRtfvta1b214W2smv46HTQnQqm XrD1IvPu/+/KyHwIj7Q0rMBJ9o/mZ4JhWXZkLWIPFbtgD0PfXiEuPR7ycFvSbH0Vap RZUTLkMgVXPMLl0nAro59omtFUh/T7BZESc0u07H2NCLBsaxtxwCrtwmFLbvJkqqM1 xg+41SNEsi0eu3HmkrM9JLUVMewHTjK2cjqd6nCG0WNVLwV4e4KIkHX3C7ON/Wlt7i OTYm50cTA9uGVqUcWKC4/HPZM9KfhAOa47vwg2dpNvnSp9fWUl7nLjyS4479ObE+rh OSXP0ruLXj32Q== 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, 18 Sep 2021 12:56:17 +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: nils.tonnaett@posteo.de 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: 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 --- Comment #10 from Nils Tonn=C3=A4tt (nils.tonnaett@posteo.de) --- I patched 5.14.5. I see now difference in behavior. When the screen stays b= lack it often works to switch to a tty or turn off and on the display. Dmesg see= ms to became a little more verbose about this: [ 64.800268] [drm] DM_MST: stopping TM on aconnector: 000000007957d743 [i= d: 97] [ 64.820206] amdgpu 0000:09:00.0: [drm] Cannot find any crtc or sizes [ 66.970887] [drm] DM_MST: starting TM on aconnector: 000000007957d743 [i= d: 97] [ 67.173165] amdgpu 0000:09:00.0: [drm] *ERROR* mstb 00000000ca721b5e por= t 8: DPCD read on addr 0x60 for 1 bytes NAKed [ 67.176906] [drm] fb mappable at 0x7C00502000 [ 67.176907] [drm] vram apper at 0x7C00000000 [ 67.176907] [drm] size 33177600 [ 67.176908] [drm] fb depth is 24 [ 67.176908] [drm] pitch is 15360 [ 67.176965] fbcon: amdgpu (fb0) is primary device [ 67.192813] amdgpu 0000:09:00.0: [drm] *ERROR* mstb 00000000ca721b5e por= t 8: DPCD read on addr 0x60 for 1 bytes NAKed [ 67.670123] Console: switching to colour frame buffer device 480x135 [ 67.708683] amdgpu 0000:09:00.0: [drm] fb0: amdgpu frame buffer device [ 72.960002] rfkill: input handler disabled [ 73.139379] amdgpu 0000:09:00.0: [drm] *ERROR* mstb 00000000ca721b5e por= t 8: DPCD read on addr 0x60 for 1 bytes NAKed [ 80.216335] rfkill: input handler enabled [ 80.534571] amdgpu 0000:09:00.0: [drm] *ERROR* mstb 00000000ca721b5e por= t 8: DPCD read on addr 0x60 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.=