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Subject: Re: [Intel-gfx] [PATCH RFC] Revert "drm/i915: Try to use fast+narrow
 link on eDP again and fall back to the old max strategy on failure"
To:     Paul Zimmerman <pauldzim@gmail.com>,
        Jani Nikula <jani.nikula@linux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc:     intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org
References: <20210509044330.4655-1-pauldzim@gmail.com>
From:   Timo Aaltonen <tjaalton@ubuntu.com>
Message-ID: <02957632-b050-f9eb-fcd8-75db9c92b8e0@ubuntu.com>
Date:   Mon, 10 May 2021 16:59:40 +0300
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On 9.5.2021 7.43, Paul Zimmerman wrote:
> This reverts commit 2bbd6dba84d44219387df051a1c799b7bac46099.
> 
> Since 5.12-rc2, my Dell XPS-15 laptop has had a blank screen on boot.
> The system seems to run fine other than having no display, I am able
> to ssh into the machine. I don't see anything interesting in the dmesg
> log. I bisected the problem down to this commit, and reverting it fixes
> the problem.

Have you tried with drm-tip? It has acca7762eb71bc0 which hopefully 
helps here.


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t