From: "Michel Dänzer" <michel@daenzer.net>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: amd-gfx@lists.freedesktop.org
Subject: Re: Renoir kernel warnings and crashes with external monitors (DP mst)
Date: Tue, 23 Jun 2020 10:22:35 +0200 [thread overview]
Message-ID: <c3bf60a1-852d-de42-b8bc-e439677dd61f@daenzer.net> (raw)
In-Reply-To: <5142c866-fecd-b344-f650-70930fc4542c@gmx.com>
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On 2020-06-23 2:23 a.m., Qu Wenruo wrote:
> Hi guys,
>
> Firstly thanks for the awesome renoir CPUs.
>
> However it looks like there are still some bugs in the Linux
> support, especially with external monitors.
>
> My setup: - Laptop: Lenovo IdeaPad S540 13ARE (Or, Xiaoxin Pro 13
> in Chinese market) 4800U CPU, with 5.7.4 Arch kernel. (Also tried
> 5.8-rc kernels, even more crashes) The eDP display is 2560x1600
> natively, but to cooperate with external monitors, it's set to
> 1920x1200. And under my daily usage, the lid is closed, thus the
> eDP display shouldn't be involved.
>
> - Two external monitors connected using USB-c dock The dock is HP
> usb-c dock G4, which uses DP alt mode MST for external displays. So
> not DisplayLink garbage, and all monitors are handled by Vega
> internal GPU.
>
> Both external displays are 1080P 60hz, so definitely inside the
> spec for DP 1.2.
>
> - X11 environment xf86-video-amdgpu, along with mesa stack.
>
> With such setup, the kernel boots with warning already related to
> DP MST: https://paste.opensuse.org/54293967
See https://gitlab.freedesktop.org/drm/amd/-/issues/1108 .
- --
Earthling Michel Dänzer | https://redhat.com
Libre software enthusiast | Mesa and X developer
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next prev parent reply other threads:[~2020-06-23 8:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 0:23 Renoir kernel warnings and crashes with external monitors (DP mst) Qu Wenruo
2020-06-23 8:22 ` Michel Dänzer [this message]
2020-06-23 8:33 ` Qu Wenruo
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