ERROR raw EDID

**Gone fishing** · June 20th, 2011

On 11.04 I'm finding on my laptop tty is constantly being spammed with the following error

Code:

[drm:radeon_dvi_detect] *ERROR* HDMI-A-1: probed a monitor but nolinvalid EDID
[drm:drm_edid_block_valid] *ERROR* Raw EDID

I guess its a problem with the radeon kernel module is there any fix? As everything seems to be working just turning off the error message would do.

**Gone fishing** · June 21st, 2011

Bump

Anyone got a plan?

**happymellon** · June 21st, 2011

I saw this to turn off the error:

http://answerpot.com/showthread.php?...o|invalid+EDID

Try adding radeon.modeset=0 in /boot/grub/grub.cfg to kernel line before "quiet"

That would be a temporary solution to see if that works.

If it does you can add it to your /etc/default/grub file

**happymellon** · June 21st, 2011

Sorry if that wasn't complete - when you edit your /etc/default/grub there should be a piece saying:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

add it in there.

**Gone fishing** · June 22nd, 2011

Thanks - I was trying to use nomodeset - however, it didn't work. Or to be more accurate it did work (no error messages) but also disabled visual effects, Unity etc. I tried making a custom xorg.conf but I think radeon.modeset=0 basically disables the radeon driver.

So I wondering if you can disable the use of EDID by the kernel module at boot up in grub and then build a custom xorg.conf to tell X what screen etc to use?

**Gone fishing** · July 13th, 2011

Solved the constant error polling firstly stopping the problem temporally can be done with

Code:

sudo -i

followed by

Code:

echo N> /sys/module/drm_kms_helper/parameters/poll

for some reason sudo echo N> /sys/module/drm_kms_helper/parameters/poll doesn't work? but gives me permission denied? This stops the problem until the next reboot.

However

Code:

sudo -i

followed by

Code:

echo "options drm_kms_helper poll=N">/etc/modprobe.d/local.conf

Fixes the problem permanently or at least stops the irritating error messages

**Bill Z** · September 16th, 2011

I am getting this same error on startup. It will not let me login. As soon as the login prompt appears the never-ending errors start. How do you stop the error messages to login?

Bill Z.