On 10/21/2012 03:18 PM, Bruno Prémont wrote:
> Hi Mark,
>
> On Sun, 21 October 2012 Mark Hounschell <dmarkh@cfl.rr.com> wrote:
>> On 10/21/2012 10:58 AM, Bruno Prémont 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 HDMI or DVI
>>>> ports of my Intel DH77DF motherboard. I received some pointers from this
>>>> list that pointed me in the direction of creating my own EDID file and I
>>>> now have a binary blob that matches what the service manual says is the
>>>> proper EDID info.
>>>>
>>>> But I am unable to get the drm_kms_helper module to load and use this file.
>>>> My relevant kernel config options are.
>>>>
>>>> CONFIG_DRM_KMS_HELPER=m
>>>> CONFIG_DRM_LOAD_EDID_FIRMWARE=y
>>>>
>>>> my relevant kernel command line contains:
>>>>
>>>> video=card0-HDMI-A-1:e
>>>> drm_kms_helper.edid_firmware=card0-HDMI-A-1:edid/lg42lb9df_hdmi1.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 number
> even if they use same technology, so it should work. (unless 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 /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  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 hdmi port?
>>>> Nor do I really understand _exactly_ how to define the connector in my
>>>> kernel command line or which of the 3 connectors from /sys I 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 that
>>> parameter on kernel cmdline but rather put it in modprobe's 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=HDMI-A-1:edid/lg42lb9df_hdmi1.edid
>> and now I'm getting something different. It looks like it's trying. In fact
>> I actually get a screen on the TV now. It's not 1920x1080 but 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 initrd
> if you're using one.
>
>> [    1.883124] load_module: Calling parse_args for module = drm_kms_helper
>> args = edid_firmware=HDMI-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 = drm_kms_helper
>> [    1.883128] parse_args: args  =
>> edid_firmware=HDMI-A-1:edid/lg42lb9df_hdmi1.edid
>> F\xffffffc9\xfffffff8h\xffffff89\xffffff86\xffffffc0\xffffff80\xffffffff\xffffffff\xffffffd4R\xffffffc9\xfffffff8TF\xffffffc9\xfffffff88\xffffff89\xffffff86\xffffffc0\xffffffa4\xffffffff\xffffffffdF\xffffffc9\xfffffff8
>> [    1.883129] parse_args: num = 2
>> [    1.883130] parse_args: min_level = -32768
>> [    1.883131] parse_args: max_level = 32767
>> [    1.883132]
>> F\xffffffc9\xfffffff8h\xffffff89\xffffff86\xffffffc0\xffffff80\xffffffff\xffffffff\xffffffd4R\xffffffc9\xfffffff8TF\xffffffc9\xfffffff88\xffffff89\xffffff86\xffffffc0\xffffffa4\xffffffff\xffffffffdF\xffffffc9\xfffffff8,
>> num=2, min_level=-32768, max_level=32767
>> [    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=-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 invalid,
>> remainder is 130
>> [    2.388631] Raw EDID:
>> [    2.388635]          00 ff ff ff ff ff ff 00 ff ff ff ff ff ff ff ff
>
> That's as ago with getting edid from hardware.
>
>>> # modprobe drm_kms_helper edid_firmware=HDMI-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 names!
> (probably HDMI-A-4, HDMI-A-5, HDMI-A-6)
>
> Alternatively you could blacklist all drm modules so they don't get loaded
> automatically and you can load them manually one at a time when system has
> booted.
>

It turns out the boot params "video=HDMI-A-1:e video=HDMI-A-2:e 
video=HDMI-A-3:e" are what actually turned the tv "on". They seem to 
default to "d". In any case I now have only that in my grub file except for 
the "video=1024x768" and I'm not really sure what that actually does.

My /etc/modprobe.d/20-drm_kms_helper.conf contains:
options drm_kms_helper edid_firmware=HDMI-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 outputs and 
then every 5-10 seconds the below gets spewed to the log file and the 
system is unresponsive while this occures. I don't understand why this 
messes up the DVI port. With no 20-drm_kms_helper.conf file the 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716623]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716625]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716626]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716628]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716629]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716639]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:12 geexbox kernel: [  174.716640]          ff ff ff ff ff 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: 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] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760795]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760797]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760798]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760800]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760801]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760802]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.760804]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873788] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873795]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873796]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873798]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873799]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873800]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873802]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:21 geexbox kernel: [  183.873803]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986796] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986802]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986804]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986805]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986807]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986808]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986810]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  183.986811]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099814] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099821]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099822]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099824]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099825]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099826]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099828]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.099829]          ff ff ff ff ff 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: HDMI-A-3: 
EDID block 0 invalid.
Oct 22 03:25:22 geexbox kernel: [  184.331124] [drm] Got external EDID base 
block and 1 extension from "edid/lg42lb9df_hdmi1.edid" for connector "HDMI-A-1"
Oct 22 03:25:22 geexbox kernel: [  184.462110] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462117]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462118]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462120]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462121]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462122]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462124]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.462134]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575122] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575128]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575130]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575131]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575133]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575142]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575143]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.575143]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688133] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688140]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688141]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688143]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688144]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688145]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688147]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.688148]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801139] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801145]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801147]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801148]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801150]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801151]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801152]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:22 geexbox kernel: [  184.801162]          ff ff ff ff ff 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: HDMI-A-3: 
EDID block 0 invalid.
Oct 22 03:25:23 geexbox kernel: [  185.017189] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017196]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017197]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017199]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017200]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017202]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017203]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.017204]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130197] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130204]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130205]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130206]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130208]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130209]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130211]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.130212]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243209] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243216]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243217]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243218]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243220]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243221]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243223]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.243224]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356218] [drm:drm_edid_block_valid] 
*ERROR* EDID checksum is invalid, remainder 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 ff ff 
ff 00 ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356224]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356226]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356227]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356228]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356230]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356231]          ff ff ff ff ff ff 
ff ff ff ff ff ff ff ff ff ff
Oct 22 03:25:23 geexbox kernel: [  185.356233]          ff ff ff ff ff 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: HDMI-A-3: 
EDID block 0 invalid.

Should I maybe add the info for the other connectrs to the modprobe file? 
If so what would be the syntax?

dmesg attached

Thanks
Mark