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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 6322BC3A59C for ; Thu, 15 Aug 2019 17:44:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 457EA2063F for ; Thu, 15 Aug 2019 17:44:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732587AbfHORoC (ORCPT ); Thu, 15 Aug 2019 13:44:02 -0400 Received: from mx2.suse.de ([195.135.220.15]:51016 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730323AbfHORoC (ORCPT ); Thu, 15 Aug 2019 13:44:02 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 18A1CACA5; Thu, 15 Aug 2019 17:44:00 +0000 (UTC) Date: Thu, 15 Aug 2019 19:43:59 +0200 Message-ID: From: Takashi Iwai To: Cc: , , , , , , , , , Subject: Re: [Nouveau] [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to enable dGPU direct output" In-Reply-To: <8724585e50004bc8b6f310587555f4a1@AUSX13MPC101.AMER.DELL.COM> References: <20190814213118.28473-1-kherbst@redhat.com> <20190814213118.28473-2-kherbst@redhat.com> <5e05532328324d01bc554c573f6298f8@AUSX13MPC101.AMER.DELL.COM> <3fc22fe8bcaf4304bb07534b61c4de90@AUSX13MPC101.AMER.DELL.COM> <8724585e50004bc8b6f310587555f4a1@AUSX13MPC101.AMER.DELL.COM> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 Emacs/25.3 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 15 Aug 2019 18:19:52 +0200, wrote: > > > -----Original Message----- > > From: Takashi Iwai > > Sent: Thursday, August 15, 2019 9:57 AM > > To: Alex Deucher > > Cc: Karol Herbst; Limonciello, Mario; nouveau; Rafael J . Wysocki; LKML; dri-devel; > > Linux ACPI Mailing List; Alex Hung; Ben Skeggs; David Airlie > > Subject: Re: [Nouveau] [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to > > enable dGPU direct output" > > > > > > [EXTERNAL EMAIL] > > > > On Thu, 15 Aug 2019 16:37:05 +0200, > > Alex Deucher wrote: > > > > > > On Thu, Aug 15, 2019 at 10:25 AM Karol Herbst wrote: > > > > > > > > On Thu, Aug 15, 2019 at 4:20 PM wrote: > > > > > > > > > > > > There are definitely going to be regressions on machines in the field > > with the > > > > > > > in tree drivers by reverting this. I think we should have an answer for all > > of > > > > > > those > > > > > > > before this revert is accepted. > > > > > > > > > > > > > > Regarding systems with Intel+NVIDIA, we'll have to work with partners > > to > > > > > > collect > > > > > > > some information on the impact of reverting this. > > > > > > > > > > > > > > When this is used on a system with Intel+AMD the ASL configures AMD > > GPU to > > > > > > use > > > > > > > "Hybrid Graphics" when on Windows and "Power Express" and > > "Switchable > > > > > > Graphics" > > > > > > > when on Linux. > > > > > > > > > > > > and what's exactly the difference between those? And what's the actual > > > > > > issue here? > > > > > > > > > > DP/HDMI is not detected unless plugged in at bootup. It's due to missing > > HPD > > > > > events. > > > > > > > > > > > > > afaik Lyude was working on fixing all that, at least for some drivers. > > > > If there is something wrong, we still should fix the drivers, not > > > > adding ACPI workarounds. > > > > > > > > Alex: do you know if there are remaining issues regarding that with amdgpu? > > > > > > There was an issue with hpd events not making it to the audio side > > > when things were powered down that was fixed with this patch set: > > > https://patchwork.freedesktop.org/patch/316793/ > > > Those patches depended on a bunch of alsa changes as well which may > > > have not been available in the distro used for a particular OEM > > > program. > > > > FYI, the corresponding commit for ALSA part is destined for 5.4 > > kernel: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git/commit/?id=ade > > 49db337a9d44ac5835cfce1ee873549011b27 > > > > BTW, Nouveau should suffer from the same problem. The patch to add > > the audio component support is found at: > > https://patchwork.freedesktop.org/patch/319131/ > > > > > > It sounds like 5.3rcX won't be a useful check then. For HDMI/DP audio, right, the main pieces are still missing in 5.3. But there is no regression in this regard, OTOH. > So am I correct to understand that everything related to the AMD failures > described in this thread should be in linux-next at this point? I'm not sure what you're referring as "AMD failures", so leave this question to AMD people :) Takashi