From: Jani Nikula <jani.nikula@linux.intel.com>
To: "Mathias Burén" <mathias.buren@gmail.com>,
intel-gfx@lists.freedesktop.org
Subject: Re: i915 and 1440p display w/ corrupt EDID
Date: Fri, 26 Sep 2014 10:25:08 +0300 [thread overview]
Message-ID: <87zjdmlu7f.fsf@intel.com> (raw)
In-Reply-To: <CADNH=7EY77xSDw9P_RwhZS==j5pituN9UDZWGbYGxBpYMKDosw@mail.gmail.com>
On Wed, 24 Sep 2014, Mathias Burén <mathias.buren@gmail.com> wrote:
> I've a 1440p display with a non-sufficient/corrupt EDID.
Just to double check, you mean the display really is broken in this
regard, *not* that the driver is unable to read the EDID?
Does your monitor have other connections than HDMI? Can you try to see
if they produce a valid EDID? It may be possible to use that EDID for
HDMI using the EDID firmware mechanism.
> When I connect the display to the laptop via the docking station, the
> laptop detects that there is a display connected, but there are no
> modes available. I can add a mode like this:
Have you tried without the dock to reduce the number of failure points?
> xrandr --newmode "2560x1440_60.0" 311.83 2560 2744 3024 3488 1440 1441
> 1444 1490 -HSync +Vsync
> xrandr --addmode HDMI3 2560x1440_60.0
>
> But I get an error when trying to use it: "xrandr: Configure crtc 1 failed".
>
> Does anyone have any tips on how to get the monitor working?
Finally, dmesg with drm.debug=14 from boot to the problem, including the
above attempt with xrandr, might prove useful.
BR,
Jani.
--
Jani Nikula, Intel Open Source Technology Center
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next prev parent reply other threads:[~2014-09-26 7:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-24 17:08 i915 and 1440p display w/ corrupt EDID Mathias Burén
2014-09-26 7:25 ` Jani Nikula [this message]
2014-09-27 15:39 ` Mathias Burén
2014-09-27 15:57 ` Mathias Burén
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