From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Hounschell <markh@compro.net>
Subject: Re: [Intel-gfx] drm_kms_helper problems
Date: Mon, 22 Oct 2012 13:40:35 -0400
Message-ID: <50858513.3070909@compro.net>
References: <508409FC.6080805@cfl.rr.com> <20121021165802.578d6d6b@neptune.home> <50843C83.8040801@cfl.rr.com> <20121021211817.58c6ccaf@neptune.home> <50853121.3040803@cfl.rr.com>
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To: dmarkh@cfl.rr.com
Cc: =?UTF-8?B?QnJ1bm8gUHLDqW1vbnQ=?= <bonbons@linux-vserver.org>, linux-kernel@vger.kernel.org, Intel Graphics Development <intel-gfx@lists.freedesktop.org>
List-Id: intel-gfx@lists.freedesktop.org

On 10/22/2012 07:42 AM, Mark Hounschell wrote:
> On 10/21/2012 03:18 PM, Bruno Pr=C3=A9mont wrote:
>> Hi Mark,
>>
>> On Sun, 21 October 2012 Mark Hounschell <dmarkh@cfl.rr.com> wrote:
>>> On 10/21/2012 10:58 AM, Bruno Pr=C3=A9mont wrote:
>>>> On Sun, 21 October 2012 Mark Hounschell <dmarkh@cfl.rr.com> wrote:
>>>>> I have a TV that appears to not provide proper EDID info to the=20
>>>>> HDMI or DVI
>>>>> ports of my Intel DH77DF motherboard. I received some pointers=20
>>>>> from this
>>>>> list that pointed me in the direction of creating my own EDID fil=
e=20
>>>>> and I
>>>>> now have a binary blob that matches what the service manual says=20
>>>>> is the
>>>>> proper EDID info.
>>>>>
>>>>> But I am unable to get the drm_kms_helper module to load and use=20
>>>>> this file.
>>>>> My relevant kernel config options are.
>>>>>
>>>>> CONFIG_DRM_KMS_HELPER=3Dm
>>>>> CONFIG_DRM_LOAD_EDID_FIRMWARE=3Dy
>>>>>
>>>>> my relevant kernel command line contains:
>>>>>
>>>>> video=3Dcard0-HDMI-A-1:e
>>>>> drm_kms_helper.edid_firmware=3Dcard0-HDMI-A-1:edid/lg42lb9df_hdmi=
1.edid
>>>>
>>>> The variant without card0- should be the right one.
>>>>
>>>
>>> OK. Changed it. What if I had more than one video card?
>>
>> Two connectors from two distinct card should not get the same suffix=
=20
>> number
>> even if they use same technology, so it should work. (unless=20
>> something was
>> changed recently)
>>
>>>>> The edid file:
>>>>> # ls -al /lib/firmware/edid/lg42lb9df_hdmi1.edid
>>>>> -rw-r--r-- 1 root root 256 Oct 16 05:46=20
>>>>> /lib/firmware/edid/lg42lb9df_hdmi1.edid
>>>>>
>>>>> connector info from /sys/class/drm/
>>>>>
>>>>> card0  card0-DP-1  card0-DP-2  card0-DP-3  card0-HDMI-A-1=20
>>>>> card0-HDMI-A-2
>>>>> card0-HDMI-A-3  card0-VGA-1  controlD64  version
>>>>>
>>>
>>> Which should I use? HDMI-A-1, HDMI-A-2, or  HDMI-A-3? Why re there =
3??
>>>
>>>>> And I don't really understand why I have 3 entries for the one=20
>>>>> hdmi port?
>>>>> Nor do I really understand _exactly_ how to define the connector=20
>>>>> in my
>>>>> kernel command line or which of the 3 connectors from /sys I=20
>>>>> should be
>>>>> using. I've tried different variants. Ie. card0-HDMI-A-1and HDMI-=
A-1.
>>>>>
>>>>> The results in the kernel log file remain:
>>>>>
>>>>> [    1.879654] drm_kms_helper: Unknown parameter `edid'
>>>>
>>>> As your drm_kms_helper is built modular, did you try not putting t=
hat
>>>> parameter on kernel cmdline but rather put it in modprobe's=20
>>>> configuration
>>>> for that module? (may doing the whole loading manually).
>>>>
>>>
>>> I've created a /etc/modprobe.d/20-drm_kms_helper.conf with:
>>> options drm_kms_helper edid_firmware=3DHDMI-A-1:edid/lg42lb9df_hdmi=
1.edid
>>> and now I'm getting something different. It looks like it's trying.=
=20
>>> In fact
>>> I actually get a screen on the TV now. It's not 1920x1080 but=20
>>> 1024x768 at
>>> 60hz.
>>
>> As things get slightly better now, check what kernel detected:
>> - /sys/module/drm_kms_helper/parameters/edid_firmware
>>    (should contain the path to firmware file)
>>
>> Make sure both the firmware and modprobe config get included in your=
=20
>> initrd
>> if you're using one.
>>
>>> [    1.883124] load_module: Calling parse_args for module =3D=20
>>> drm_kms_helper
>>> args =3D edid_firmware=3DHDMI-A-1:edid/lg42lb9df_hdmi1.edid
>>> [    1.883126]
>>> [    1.883126] parse_args: (1) Entered for drm_kms_helper
>>> [    1.883127]
>>> [    1.883127] parse_args: (2) Entered for drm_kms_helper
>>> [    1.883127] parse_args: doing =3D drm_kms_helper
>>> [    1.883128] parse_args: args  =3D
>>> edid_firmware=3DHDMI-A-1:edid/lg42lb9df_hdmi1.edid
>>> F\xffffffc9\xfffffff8h\xffffff89\xffffff86\xffffffc0\xffffff80\xfff=
fffff\xffffffff\xffffffd4R\xffffffc9\xfffffff8TF\xffffffc9\xfffffff88\x=
ffffff89\xffffff86\xffffffc0\xffffffa4\xffffffff\xffffffffdF\xffffffc9\=
xfffffff8=20
>>>
>>> [    1.883129] parse_args: num =3D 2
>>> [    1.883130] parse_args: min_level =3D -32768
>>> [    1.883131] parse_args: max_level =3D 32767
>>> [    1.883132]
>>> F\xffffffc9\xfffffff8h\xffffff89\xffffff86\xffffffc0\xffffff80\xfff=
fffff\xffffffff\xffffffd4R\xffffffc9\xfffffff8TF\xffffffc9\xfffffff88\x=
ffffff89\xffffff86\xffffffc0\xffffffa4\xffffffff\xffffffffdF\xffffffc9\=
xfffffff8,=20
>>>
>>> num=3D2, min_level=3D-32768, max_level=3D32767
>>> [    1.886855]
>>> .
>>> .
>>> .
>>> [    2.132749] [drm] forcing HDMI-A-1 connector ON
>>> [    2.132752] [drm] forcing HDMI-A-2 connector ON
>>> [    2.132753] [drm] forcing HDMI-A-3 connector ON
>>>
>>> [    2.189769] [drm:edid_load] *ERROR* Requesting EDID firmware
>>> "edid/lg42lb9df_hdmi1.edid" failed (err=3D-2)
>>
>> Interesting, kernel/udev can't find the edid file but know what file
>> to look for... Is the edid file available at that time (initrd?)?
>>
>>> I get a couple of the above messages.
>>>
>>>
>>> [    2.388623] [drm:drm_edid_block_valid] *ERROR* EDID checksum is=20
>>> invalid,
>>> remainder is 130
>>> [    2.388631] Raw EDID:
>>> [    2.388635]          00 ff ff ff ff ff ff 00 ff ff ff ff ff ff f=
f ff
>>
>> That's as ago with getting edid from hardware.
>>
>>>> # modprobe drm_kms_helper=20
>>>> edid_firmware=3DHDMI-A-1:edid/lg42lb9df_hdmi1.edid
>>>>
>>>
>>> I can't seem to rm the modules already loaded to try this.
>>
>> There are multiple steps needed to be able to rmmod those modules:
>> - stop DRM users (e.g. X)
>> - disable fbcon
>>    echo 1 > /sys/class/vtcon0/bind
>>    echo 0 > /sys/class/vtcon1/bind
>>    (assuming vtcon1 is fbcon, vtcon0 is VGA console)
>> - rmmod i915
>> - rmmod drm_kms_helper
>>
>> Note that at time of modprobing i915 connectors will have different=20
>> names!
>> (probably HDMI-A-4, HDMI-A-5, HDMI-A-6)
>>
>> Alternatively you could blacklist all drm modules so they don't get=20
>> loaded
>> automatically and you can load them manually one at a time when=20
>> system has
>> booted.
>>
>
> It turns out the boot params "video=3DHDMI-A-1:e video=3DHDMI-A-2:e=20
> video=3DHDMI-A-3:e" are what actually turned the tv "on". They seem t=
o=20
> default to "d". In any case I now have only that in my grub file=20
> except for the "video=3D1024x768" and I'm not really sure what that=20
> actually does.
>
> My /etc/modprobe.d/20-drm_kms_helper.conf contains:
> options drm_kms_helper edid_firmware=3DHDMI-A-1:edid/lg42lb9df_hdmi1.=
edid
>
> How can I add the other connector info to that file BTW?
>
> It now looks like it is finding the edid file.
>  # cat /sys/module/drm_kms_helper/parameters/edid_firmware
> HDMI-A-1:edid/lg42lb9df_hdmi1.edid
>
> What I End up with is a 1024x768 on both the DVI and HDMI port output=
s=20
> and then every 5-10 seconds the below gets spewed to the log file and=
=20
> the system is unresponsive while this occures. I don't understand why=
=20
> this messes up the DVI port. With no 20-drm_kms_helper.conf file the=20
> DVI port get 1600x1200
>
> geexbox:/home/markh # tail -f /var/log/messages
> Oct 22 03:25:12 geexbox kernel: [  174.716622]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716623]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716625]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716626]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716628]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716629]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716639]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716640]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:12 geexbox kernel: [  174.716642] i915 0000:00:02.0:=20
> HDMI-A-3: EDID block 0 invalid.
> Oct 22 03:25:13 geexbox su: (to root) markh on /dev/pts/0
> Oct 22 03:25:21 geexbox kernel: [  183.760787]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:21 geexbox kernel: [  183.760791] Raw EDID:
> Oct 22 03:25:21 geexbox kernel: [  183.760794]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760795]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760797]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760798]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760800]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760801]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760802]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.760804]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873788]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:21 geexbox kernel: [  183.873791] Raw EDID:
> Oct 22 03:25:21 geexbox kernel: [  183.873793]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873795]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873796]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873798]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873799]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873800]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873802]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:21 geexbox kernel: [  183.873803]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986796]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  183.986799] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  183.986801]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986802]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986804]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986805]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986807]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986808]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986810]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  183.986811]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099814]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  184.099817] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  184.099819]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099821]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099822]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099824]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099825]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099826]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099828]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099829]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.099841] i915 0000:00:02.0:=20
> HDMI-A-3: EDID block 0 invalid.
> Oct 22 03:25:22 geexbox kernel: [  184.331124] [drm] Got external EDI=
D=20
> base block and 1 extension from "edid/lg42lb9df_hdmi1.edid" for=20
> connector "HDMI-A-1"
> Oct 22 03:25:22 geexbox kernel: [  184.462110]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  184.462113] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  184.462115]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462117]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462118]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462120]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462121]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462122]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462124]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.462134]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575122]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  184.575125] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  184.575127]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575128]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575130]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575131]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575133]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575142]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575143]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.575143]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688133]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  184.688136] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  184.688138]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688140]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688141]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688143]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688144]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688145]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688147]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.688148]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801139]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:22 geexbox kernel: [  184.801142] Raw EDID:
> Oct 22 03:25:22 geexbox kernel: [  184.801144]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801145]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801147]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801148]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801150]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801151]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801152]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801162]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:22 geexbox kernel: [  184.801164] i915 0000:00:02.0:=20
> HDMI-A-3: EDID block 0 invalid.
> Oct 22 03:25:23 geexbox kernel: [  185.017189]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:23 geexbox kernel: [  185.017192] Raw EDID:
> Oct 22 03:25:23 geexbox kernel: [  185.017194]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017196]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017197]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017199]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017200]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017202]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017203]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.017204]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130197]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:23 geexbox kernel: [  185.130200] Raw EDID:
> Oct 22 03:25:23 geexbox kernel: [  185.130202]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130204]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130205]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130206]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130208]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130209]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130211]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.130212]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243209]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:23 geexbox kernel: [  185.243212] Raw EDID:
> Oct 22 03:25:23 geexbox kernel: [  185.243214]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243216]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243217]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243218]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243220]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243221]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243223]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.243224]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356218]=20
> [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainde=
r=20
> is 130
> Oct 22 03:25:23 geexbox kernel: [  185.356221] Raw EDID:
> Oct 22 03:25:23 geexbox kernel: [  185.356223]          00 ff ff ff f=
f=20
> ff ff 00 ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356224]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356226]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356227]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356228]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356230]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356231]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356233]          ff ff ff ff f=
f=20
> ff ff ff ff ff ff ff ff ff ff ff
> Oct 22 03:25:23 geexbox kernel: [  185.356245] i915 0000:00:02.0:=20
> HDMI-A-3: EDID block 0 invalid.
>
> Should I maybe add the info for the other connectrs to the modprobe=20
> file? If so what would be the syntax?
>
> dmesg attached

One thing I forgot to mention is that I do have the edid file built int=
o=20
the kernel via:
CONFIG_EXTRA_FIRMWARE=3D"edid/lg42lb9df_hdmi1.edid"

Mark