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From: "Michel Dänzer" <michel-otUistvHUpPR7s880joybQ@public.gmane.org>
To: Paul Menzel <pmenzel+amd-gfx-KUpvgZVWgV9o1qOY/usvUg@public.gmane.org>
Cc: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org,
	dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: Re: randr: Virtual monitor not present with MST display
Date: Fri, 8 Mar 2019 10:11:18 +0100	[thread overview]
Message-ID: <6961caea-e030-33d5-6365-9524d533e988@daenzer.net> (raw)
In-Reply-To: <22b28b6e-3087-e467-abc4-db267d596007-KUpvgZVWgV9o1qOY/usvUg@public.gmane.org>

On 2019-03-06 5:35 p.m., Paul Menzel wrote:
> On 03/06/19 15:55, Michel Dänzer wrote:
>> On 2019-03-06 1:41 p.m., Paul Menzel wrote:
>>> On 03/05/19 20:07, Alex Deucher wrote:
>>>> On Tue, Mar 5, 2019 at 1:16 PM Paul Menzel wrote:
>>>
>>>>> Using the MST display Dell UP3214Q (two panels) with an AMD system,
>>>>> the virtual monitor object is not created. GDM and Xfce consider both
>>>>> panels as separate screens (`xrandr --listmonitors`).
>>>>>
>>>>> [...]
>>>
>>> I didn’t provide the output of xrandr in my previous message.
>>>
>>>     $ xrandr --listmonitors
>>>      Monitors: 2
>>>      0: +DisplayPort-9 1920/698x2160/392+0+0  DisplayPort-9
>>>      1: +DisplayPort-10 1920/698x2160/392+1920+0  DisplayPort-10
>>>
>>> Please find the X.Org X Server log attached.
>>>
>>>>> With an Intel system, the monitor object is shown.
>>>
>>> To clarify, the modesetting driver is used with the Intel hardware.
>>
>> Does this work better with the modesetting driver on the AMD system?
> 
> With Linux 4.19.19, there was the same problem with the modesetting driver
> during my limited testing.
> 
> Updating to Linux 4.20.13, it worked with the modesetting driver, but the
> AMDGPU driver still failed to properly utilize the MST monitor.

Does
https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgpu/merge_requests/32
help?


-- 
Earthling Michel Dänzer               |              https://www.amd.com
Libre software enthusiast             |             Mesa and X developer
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  parent reply	other threads:[~2019-03-08  9:11 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-05 18:07 randr: Virtual monitor not present with MST display Paul Menzel
2019-03-05 19:07 ` Alex Deucher
     [not found]   ` <CADnq5_Pxk=L45FuWnMpQmpT4JB39OteoDJfHQzxr64wVjnMj-w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-03-06 12:41     ` Paul Menzel
2019-03-06 14:55       ` Michel Dänzer
     [not found]         ` <adf69ac0-ac0f-b44c-cdcd-38ce45b1ec0b-otUistvHUpPR7s880joybQ@public.gmane.org>
2019-03-06 16:35           ` Paul Menzel
     [not found]             ` <22b28b6e-3087-e467-abc4-db267d596007-KUpvgZVWgV9o1qOY/usvUg@public.gmane.org>
2019-03-08  9:11               ` Michel Dänzer [this message]
2019-03-18 20:55                 ` Wentland, Harry
2019-03-18 21:58                   ` Paul Menzel
     [not found]                     ` <7690a9b6-fb4d-f679-e7cc-f94d923eddd0-KUpvgZVWgV9o1qOY/usvUg@public.gmane.org>
2019-03-19 20:23                       ` Wentland, Harry

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