Re: [PATCH] drm/ast: Fix default resolution when no monitor is connected on DP

From: "Michel Dänzer" <michel.daenzer@mailbox.org>
To: Thomas Zimmermann <tzimmermann@suse.de>,
	Jocelyn Falempe <jfalempe@redhat.com>,
	Sui Jingfeng <suijingfeng@loongson.cn>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	airlied@redhat.com, kuohsiang_chou@aspeedtech.com,
	jammy_huang@aspeedtech.com
Cc: dri-devel@lists.freedesktop.org
Subject: Re: [PATCH] drm/ast: Fix default resolution when no monitor is connected on DP
Date: Thu, 13 Jul 2023 11:41:48 +0200	[thread overview]
Message-ID: <0e49b998-7b0c-2681-e1a6-c24f66fe69ab@mailbox.org> (raw)
In-Reply-To: <9ceee0d3-cf5f-2a10-0d1b-9f02be00058e@suse.de>

On 7/13/23 11:09, Thomas Zimmermann wrote:
> Am 13.07.23 um 10:53 schrieb Michel Dänzer:
>> On 7/13/23 10:49, Thomas Zimmermann wrote:
>>> Am 13.07.23 um 10:32 schrieb Michel Dänzer:
>>>> On 7/12/23 17:25, Jocelyn Falempe wrote:
>>>>> On 12/07/2023 17:05, Sui Jingfeng wrote:
>>>>>> On 2023/7/10 16:07, Jocelyn Falempe wrote:
>>>>>>
>>>>>>> On the other hand, are there any drawback to present a BMC connector even when the hardware doesn't have it ?
>>>>>>
>>>>>> If not properly setting up, I think you will create two encoder and two connector in the system.
>>>>>
>>>>> Yes, but I think it won't have any visible effect for the end-user.
>>>>
>>>> I'm afraid user-space display servers would waste effort producing content for a non-existing BMC (assuming its connector status is connected or unknown).
>>>
>>> Right now, the BMC output works because the VGA status is always connected. So nothing really changes.
>>
>> User-space display servers would generally produce different contents by default for the VGA & BMC connectors.
> 
> Can you elaborate? How would the output differ?

Per the other sub-thread, I didn't realize there's only a single CRTC.

-- 
Earthling Michel Dänzer            |                  https://redhat.com
Libre software enthusiast          |         Mesa and Xwayland developer