Re: [Intel-gfx] drm_kms_helper problems

From: Mark Hounschell
Date: Mon Oct 22 2012 - 13:40:28 EST

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On 10/22/2012 07:42 AM, Mark Hounschell wrote:

On 10/21/2012 03:18 PM, Bruno PrÃmont wrote:
Hi Mark,

On Sun, 21 October 2012 Mark Hounschell <dmarkh@xxxxxxxxxx> wrote:
On 10/21/2012 10:58 AM, Bruno PrÃmont wrote:
On Sun, 21 October 2012 Mark Hounschell <dmarkh@xxxxxxxxxx> 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

One thing I forgot to mention is that I do have the edid file built into the kernel via:
CONFIG_EXTRA_FIRMWARE="edid/lg42lb9df_hdmi1.edid"

Mark

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