SOLVED.
Reponding to Kai-Heng question, the edid file was not in initramfs and I
didn't know how to add it at the time.
I was using another monitor the last months and didn't encounter this problem.
This week I connected the monitor and found the same problem again, this time
with Ubuntu 19.10 and Kubuntu 19.10.
This time I was using an encrypted root partition so the edid file must
be in the initfd file to be found by the kernel.
I managed to include it by creating a file named
/etc/initramfs-tools/hooks/edid with this content:
-----------
#!/bin/sh
PREREQ=""
prereqs()
{
echo "$PREREQ"
}
case $1 in
prereqs)
prereqs
exit 0
;;
esac
. /usr/share/initramfs-tools/hook-functions
# Begin real processing below this line
mkdir -p "${DESTDIR}/lib/firmware/edid"
cp -a /lib/firmware/edid/modified_edid.bin
"${DESTDIR}/lib/firmware/edid/modified_edid.bin"
exit 0
-----------
The file needs execution permission: chmod +x /etc/initramfs-tools/hooks/edid
And initrd must be updated: update-initramfs -u
After that "lsinitramfs /boot/initrd.img-5.3.0-40-generic | grep edid"
shows the file included.
With this the kernel is able to load the file at boot, and the monitor
works nicely.
I suppose the source of this bug is me not knowing how to manage Ubuntu boot
process, so if no one more is affected by this problem I think the bug can be
closed.
Thanks.
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1814938
Title:
drm.edid_firmware fails to load firmware where crypsetup-initramfs is
installed
Status in linux package in Ubuntu:
Confirmed
Bug description:
My HP LP2475W monitor reports incorrect EDID info resulting in bad
image quality.
It can be fixed with a customized edid file, and adding
drm.edid_firmware kernel boot parameter.
But in Ubuntu 18.04.1 and Ubuntu 18.10, if crypsetup-initramfs package
is installed, it fails to load the firmware file.
Detailed bug report:
Following this istructions (https://blog.tingping.se/2018/12/01
/amdgpu-fullrgb.html), I created a modified edid.bin file in
/lib/firmware/edid/edid.bin and passed drm.edid_firmware=edid/edid.bin
to the kernel at boot.
In my daily Ubuntu 18.04.1 dmesg report this error and I could not solve it.
[ 1.173897] platform HDMI-A-1: Direct firmware load for edid/edid.bin
failed with error -2
So I tried in a fresh Ubuntu 18.10 and it worked nicely, no error and nice
crisp display image.
But when I began to install the software I need for daily use it ceased to
work and began to show the same message as in my work Ubuntu 18.04.1.
After some test it seems that the problem occurs after I install cryptsetup:
------
dmesg | grep edid
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-14-generic
root=UUID=dfb5fdf3-b93b-4abf-99fd-d5a7ec4e66df ro
drm.edid_firmware=edid/edid.bin quiet splash vt.handoff=1
[ 0.000000] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.18.0-14-generic
root=UUID=dfb5fdf3-b93b-4abf-99fd-d5a7ec4e66df ro
drm.edid_firmware=edid/edid.bin quiet splash vt.handoff=1
[ 3.792846] [drm] Got external EDID base block and 1 extension from
"edid/edid.bin" for connector "HDMI-A-1"
------
I purged cryptsetup but the problem persisted, so I removed too
cryptsetup-initramfs and the the problem disapeared and the edid file is loaded
again, improving the display quality:
------
dmesg | grep edid
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.0-14-generic
root=UUID=dfb5fdf3-b93b-4abf-99fd-d5a7ec4e66df ro
drm.edid_firmware=edid/edid.bin quiet splash vt.handoff=1
[ 0.000000] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.18.0-14-generic
root=UUID=dfb5fdf3-b93b-4abf-99fd-d5a7ec4e66df ro
drm.edid_firmware=edid/edid.bin quiet splash vt.handoff=1
[ 3.717878] [drm] Got external EDID base block and 1 extension from
"edid/edid.bin" for connector "HDMI-A-1"
-------
This question in AskUbuntu suggest that there are more people with
this probem (https://askubuntu.com/questions/1113195/how-to-output-
full-range-rgb-in-ubuntu-18-04-1)
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-14-generic 4.18.0-14.15
ProcVersionSignature: Ubuntu 4.18.0-14.15-generic 4.18.20
Uname: Linux 4.18.0-14-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: david 2007 F.... pulseaudio
/dev/snd/pcmC0D1p: david 2007 F...m pulseaudio
/dev/snd/controlC1: david 2007 F.... pulseaudio
Date: Wed Feb 6 18:37:39 2019
InstallationDate: Installed on 2019-02-06 (0 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64
(20181017.3)
IwConfig:
lo no wireless extensions.
enp7s0 no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. To be filled by O.E.M.
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=es_ES.UTF-8
SHELL=/bin/bash
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-14-generic
root=UUID=dfb5fdf3-b93b-4abf-99fd-d5a7ec4e66df ro
drm.edid_firmware=edid/edid.bin quiet splash vt.handoff=1
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.18.0-14-generic N/A
linux-backports-modules-4.18.0-14-generic N/A
linux-firmware 1.175.1
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/11/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: U1n
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z68X-UD3H-B3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrU1n:bd07/11/2016:svnGigabyteTechnologyCo.,Ltd.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ68X-UD3H-B3:rvrTobefilledbyO.E.M.:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: To be filled by O.E.M.
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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