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From:   Dirk Gouders <dirk@gouders.net>
To:     Lyude Paul <lyude@redhat.com>
Cc:     Linux Kernel <linux-kernel@vger.kernel.org>,
        Wayne Lin <Wayne.Lin@amd.com>,
        Ville =?utf-8?B?U3lyasOkbMOk?= <ville.syrjala@linux.intel.com>,
        Fangzhi Zuo <Jerry.Zuo@amd.com>,
        Jani Nikula <jani.nikula@intel.com>,
        Imre Deak <imre.deak@intel.com>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Sean Paul <sean@poorly.run>
Subject: Re: Regression bisected: drm/display/dp_mst: Move all payload info
 into the atomic state
In-Reply-To: <006064db584562c38ba75bff30d1b33f8995df62.camel@redhat.com>
        (Lyude Paul's message of "Fri, 11 Nov 2022 15:50:02 -0500")
References: <ghwn827862.fsf@gouders.net>
        <006064db584562c38ba75bff30d1b33f8995df62.camel@redhat.com>
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Date:   Fri, 11 Nov 2022 23:00:34 +0100
Message-ID: <gh5yflw3r1.fsf@gouders.net>
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Thank you for the pointer.  I will see if I can produce some of the
wanted logs but at the earliest tomorrow, it's almost sleeping time,
here.

Dirk

Lyude Paul <lyude@redhat.com> writes:

> Thank for letting us know! Luckily I only have good news, as we've actually
> been looking into this issue for a bit now and have made a pretty good amount
> of progress. There's pretty much only one issue left for us to fix I'm fairly
> sure:
>
> https://gitlab.freedesktop.org/drm/amd/-/issues/2171
>
> If you'd like to help, there's some logs I could use someone getting to help
> me figure out the last remaining issue here.
>
> On Thu, 2022-11-10 at 23:32 +0100, Dirk Gouders wrote:
>> Hello,
>> 
>> I noticed a regression with Linus' current tree and bisected it to
>> 4d07b0bc403403 (drm/display/dp_mst: Move all payload info into the atomic state):
>> 
>> I have two monitors connected to my laptop's USB-C port and since this
>> patch, one of the monitors remains dark.
>> 
>> Please let me know if I can provide additional information that could help
>> to investigate this problem.
>> 
>> Dirk
>>