From: "Christian König" <christian.koenig@amd.com>
To: suijingfeng <suijingfeng@loongson.cn>,
"Sui Jingfeng" <sui.jingfeng@linux.dev>,
"Christian König" <ckoenig.leichtzumerken@gmail.com>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Jani Nikula" <jani.nikula@linux.intel.com>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>
Cc: nouveau@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org,
dri-devel@lists.freedesktop.org, linux-pci@vger.kernel.org
Subject: Re: [Nouveau] [RFC, drm-misc-next v4 0/9] PCI/VGA: Allowing the user to select the primary video adapter at boot time
Date: Thu, 7 Sep 2023 14:43:56 +0200 [thread overview]
Message-ID: <714d5ecf-f0dd-c099-0970-9ee765d35161@amd.com> (raw)
In-Reply-To: <5d9f9780-995f-33dc-e3db-3112aa085062@loongson.cn>
Am 07.09.23 um 14:32 schrieb suijingfeng:
> Hi,
>
>
> On 2023/9/7 17:08, Christian König wrote:
>> Well, I have over 25 years of experience with display hardware and
>> what you describe here was never an issue.
>
> I want to give you an example to let you know more.
>
> I have a ASRock AD2550B-ITX board[1],
> When another discrete video card is mounted into it mini PCIe slot or
> PCI slot,
> The IGD cannot be the primary display adapter anymore. The display is
> totally black.
> I have try to draft a few trivial patch to help fix this[2].
>
> And I want to use the IGD as primary, does this count as an issue?
No, this is completely expected behavior and a limitation of the
hardware design.
As far as I know both AMD and Intel GPUs work the same here.
Regards,
Christian.
>
> [1] https://www.asrock.com/mb/Intel/AD2550-ITX/
> [2] https://patchwork.freedesktop.org/series/123073/
>
next prev parent reply other threads:[~2023-09-07 15:45 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-04 19:57 [RFC,drm-misc-next v4 0/9] PCI/VGA: Allowing the user to select the primary video adapter at boot time Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 1/9] " Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 2/9] drm/nouveau: Implement .be_primary() callback Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 3/9] drm/radeon: " Sui Jingfeng
2023-09-05 5:50 ` Christian König
2023-09-05 17:24 ` suijingfeng
2023-09-06 16:00 ` Alex Deucher
2023-09-07 1:40 ` Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 4/9] drm/amdgpu: " Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 5/9] drm/i915: " Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 6/9] drm/loongson: " Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 7/9] drm/ast: Register as a VGA client by calling vga_client_register() Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 8/9] drm/hibmc: " Sui Jingfeng
2023-09-04 19:57 ` [RFC,drm-misc-next v4 9/9] drm/gma500: " Sui Jingfeng
2023-09-05 10:38 ` [RFC, drm-misc-next v4 0/9] PCI/VGA: Allowing the user to select the primary video adapter at boot time Jani Nikula
2023-09-05 13:28 ` Christian König
2023-09-05 14:28 ` Sui Jingfeng
2023-09-06 6:47 ` Christian König
2023-09-05 10:45 ` [Nouveau] " Thomas Zimmermann
2023-09-05 13:30 ` suijingfeng
2023-09-05 15:05 ` Thomas Zimmermann
2023-09-06 2:14 ` suijingfeng
2023-09-06 7:00 ` Thomas Zimmermann
2023-09-06 2:34 ` suijingfeng
2023-09-06 7:18 ` Thomas Zimmermann
2023-09-06 3:08 ` suijingfeng
2023-09-06 7:46 ` Thomas Zimmermann
2023-09-06 4:14 ` Sui Jingfeng
2023-09-06 6:45 ` Christian König
2023-09-06 9:08 ` suijingfeng
2023-09-06 9:40 ` Christian König
2023-09-07 2:30 ` Sui Jingfeng
2023-09-07 9:08 ` Christian König
2023-09-07 12:32 ` suijingfeng
2023-09-07 12:43 ` Christian König [this message]
2023-09-07 15:26 ` suijingfeng
2023-09-07 15:32 ` Christian König
2023-09-07 16:33 ` suijingfeng
2023-09-08 6:59 ` Christian König
2023-09-06 10:31 ` Sui Jingfeng
2023-09-06 10:50 ` Christian König
2023-09-05 10:49 ` Thomas Zimmermann
2023-09-05 15:59 ` suijingfeng
2023-09-06 8:05 ` Thomas Zimmermann
2023-09-06 9:48 ` suijingfeng
2023-09-06 11:06 ` Thomas Zimmermann
2023-09-07 9:43 ` Jani Nikula
2023-09-05 14:52 ` Alex Williamson
2023-09-05 16:21 ` suijingfeng
2023-09-05 16:39 ` Alex Williamson
2023-09-06 3:51 ` Sui Jingfeng
2023-09-06 19:29 ` Alex Williamson
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