Comment # 2 on bug 1219395 from Jiri Belka

I assume this tool is too old to work correctly:

jb155sapqe02:~ # get-edid 
This is read-edid version 3.0.2. Prepare for some fun.
Attempting to use i2c interface                                                 
Looks like no busses have an EDID. Sorry!
Attempting to use the classical VBE interface
open /dev/mem: Operation not permitted
error initialising realmode interface
do you have full superuser (root) permissions?
I'm sorry nothing was successful. Maybe try some other arguments
if you played with them, or send an email to Matthew Kern
<pyrophobicman@gmail.com>.

jb155sapqe02:~ # dmesg | grep -i secure
[    0.000000] secureboot: Secure boot enabled
[    0.000000] Kernel is locked down from EFI Secure Boot mode; see man
kernel_lockdown.7
[    0.017138] secureboot: Secure boot enabled
[    2.348429] Loaded X.509 cert 'SUSE Linux Enterprise Secure Boot Signkey:
a746b64b6cb71f13385638055f46162bac632acd'm_
[    2.404620] integrity: Loaded X.509 cert 'SUSE Linux Enterprise Secure Boot
CA: ecab0d42c456cf770436b973993862965e87262f'
[    2.410829] Loaded X.509 cert 'SUSE Linux Enterprise Secure Boot Signkey:
a746b64b6cb71f13385638055f46162bac632acd'