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=-1.0 required=3.0 tests=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 76160C3B1BF for ; Sun, 16 Feb 2020 21:12:16 +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 3EBCF20726 for ; Sun, 16 Feb 2020 21:12:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3EBCF20726 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=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AD3E56E497; Sun, 16 Feb 2020 21:12:15 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 29D9B6E497 for ; Sun, 16 Feb 2020 21:12:15 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 200695] Blank screen on RX 580 with amdgpu.dc=1 enabled (no displays detected) Date: Sun, 16 Feb 2020 21:12:14 +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: normal X-Bugzilla-Who: babgozdtb@outlook.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: 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=200695 babgozd (babgozdtb@outlook.com) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |babgozdtb@outlook.com --- Comment #38 from babgozd (babgozdtb@outlook.com) --- (In reply to Adam from comment #37) > As several comments mention different behavior between the different > connector types I found a spare DVI cable and tried connecting to the same > monitor via that input and it worked! So once logged in I plugged in the > HDMI cable and switched input and it worked just fine (monitor was glitchy > at first but once I disabled DVI output in monitor configuration it worked > perfectly). To confirm this was indeed working with the DC code path I > tested audio over HDMI and it worked just fine (and does not work with DC > disabled, as expected). So I rebooted with both the DVI and HDMI in and the > output over HDMI worked all through boot. I then disconnected the DVI and > rebooted and the HDMI continues to work so far. Unfortunately I don't have a > displayport monitor around to test if that behaves as weirdly. Just to be > clear, I had tried to make this monitor work for a couple weeks over HDMI > and the only thing that worked was amdgpu.dc=0 until I plugged in the DVI > connector so this was not a one off fail. > > I forgot to mention before that when the HDMI output was not working with DC > my Xorg logs also showed no monitor detected. > > I can attach the two different Xorg logs if that helps? I am following this thread since it has created. My R9 380 with DVI-I output is connected to my VGA monitor with DVI-I male to VGA female adapter and I am getting black/blank screen while booting with amdgpu.dc=1 which is default since kernel 4.17. It is fine with amdgpu.dc=0. I can provide logs too if any kernel contributor wants to investigate the problem any further. -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel