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From: Alex Hung <alex.hung@canonical.com>
To: Karol Herbst <kherbst@redhat.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
	Linux ACPI Mailing List <linux-acpi@vger.kernel.org>,
	dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
	"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Dave Airlie <airlied@redhat.com>, Lyude Paul <lyude@redhat.com>,
	Ben Skeggs <bskeggs@redhat.com>
Subject: Re: [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to enable dGPU direct output"
Date: Wed, 14 Aug 2019 15:49:32 -0600
Message-ID: <CAJ=jquaoA+_WmTJtcGq4b0A_Sb=Aw_3_TsUR-8nxJ+rJTdoFPA@mail.gmail.com> (raw)
In-Reply-To: <20190814213118.28473-2-kherbst@redhat.com>

Thanks for the series of fixes. I will check whether these fixes work
on the original intended systems.

On Wed, Aug 14, 2019 at 3:31 PM Karol Herbst <kherbst@redhat.com> wrote:
>
> This reverts commit 28586a51eea666d5531bcaef2f68e4abbd87242c.
>
> The original commit message didn't even make sense. AMD _does_ support it and
> it works with Nouveau as well.
>
> Also what was the issue being solved here? No references to any bugs and not
> even explaining any issue at all isn't the way we do things.
>
> And even if it means a muxed design, then the fix is to make it work inside the
> driver, not adding some hacky workaround through ACPI tricks.
>
> And what out of tree drivers do or do not support we don't care one bit anyway.
>
> Signed-off-by: Karol Herbst <kherbst@redhat.com>
> CC: Alex Hung <alex.hung@canonical.com>
> CC: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> CC: Dave Airlie <airlied@redhat.com>
> CC: Lyude Paul <lyude@redhat.com>
> CC: Ben Skeggs <bskeggs@redhat.com>
> ---
>  drivers/acpi/osi.c | 7 -------
>  1 file changed, 7 deletions(-)
>
> diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c
> index bec0bebc7f52..9b20ac4d79a0 100644
> --- a/drivers/acpi/osi.c
> +++ b/drivers/acpi/osi.c
> @@ -61,13 +61,6 @@ osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
>          * a BIOS workaround.
>          */
>         {"Linux-Lenovo-NV-HDMI-Audio", true},
> -       /*
> -        * Linux-HPI-Hybrid-Graphics is used by BIOS to enable dGPU to
> -        * output video directly to external monitors on HP Inc. mobile
> -        * workstations as Nvidia and AMD VGA drivers provide limited
> -        * hybrid graphics supports.
> -        */
> -       {"Linux-HPI-Hybrid-Graphics", true},
>  };
>
>  static u32 acpi_osi_handler(acpi_string interface, u32 supported)
> --
> 2.21.0
>


-- 
Cheers,
Alex Hung

  reply index

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14 21:31 [PATCH 0/7] Adding a proper workaround for fixing RTD3 issues with Nouveau Karol Herbst
2019-08-14 21:31 ` [PATCH 1/7] Revert "ACPI / OSI: Add OEM _OSI string to enable dGPU direct output" Karol Herbst
2019-08-14 21:49   ` Alex Hung [this message]
2019-08-14 22:47   ` [Nouveau] " Dave Airlie
2019-08-15 13:55     ` Mario.Limonciello
2019-08-15 14:04       ` Karol Herbst
2019-08-15 14:13         ` Alex Deucher
2019-08-15 14:15           ` Karol Herbst
2019-08-15 14:17             ` Alex Deucher
2019-08-15 14:23               ` Mario.Limonciello
2019-08-15 14:35                 ` Karol Herbst
2019-08-15 14:41                 ` Alex Deucher
2019-08-15 14:19         ` Mario.Limonciello
2019-08-15 14:25           ` Karol Herbst
2019-08-15 14:34             ` Mario.Limonciello
2019-08-15 14:36               ` Karol Herbst
2019-08-15 14:37             ` Alex Deucher
2019-08-15 14:56               ` Takashi Iwai
2019-08-15 16:19                 ` Mario.Limonciello
2019-08-15 17:43                   ` Takashi Iwai
2019-08-15 18:34                   ` Alex Deucher
2019-08-15 14:59               ` Alex Deucher
2019-08-15 14:11     ` Daniel Vetter
2019-08-19  9:52     ` Rafael J. Wysocki
2019-09-05 15:51       ` Karol Herbst
2019-09-05 16:26         ` Rafael J. Wysocki
2019-09-09 21:07           ` Alex Hung
2019-10-21  2:14           ` Alex Hung
2019-10-21  8:14             ` Rafael J. Wysocki
2019-10-21  8:48               ` Karol Herbst
2019-10-21  8:54                 ` Rafael J. Wysocki
2019-09-05 16:35         ` Alex Deucher
2019-08-14 21:31 ` [PATCH 2/7] Revert "ACPI / OSI: Add OEM _OSI string to enable NVidia HDMI audio" Karol Herbst
2019-08-14 21:31 ` [PATCH 3/7] Revert "ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3" Karol Herbst
2019-08-14 23:34   ` Alex Hung
2019-08-15  4:44     ` Karol Herbst
2019-08-14 21:31 ` [PATCH 4/7] drm/nouveau/pci: enable pcie link changes for pascal Karol Herbst
2019-08-14 21:31 ` [PATCH 5/7] drm/nouveau/pci: add nvkm_pcie_get_speed Karol Herbst
2019-08-14 21:31 ` [PATCH 6/7] drm/nouveau/pci: save the boot pcie link speed and restore it on fini Karol Herbst
2019-08-14 21:31 ` [PATCH 7/7] drm/nouveau: abort runtime suspend if we hit an error Karol Herbst

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