How to update initramfs

[deleted]

I'm trying to load edited EDIDs for my monitor and TV to work around some bugs / stupidity for AMD GPUs (memory stuck at max clock speed, switching the pixel format from YCbCr to RGB).

I put the edited files in "lib/firmware/edid" and added the following to my conf in "/etc/kernel/cmdline.d/":

video=DP-1:e video=HDMI-A-1:e drm.edid_firmware=DP-1:edid/edid_asus_linux_cust.bin,HDMI-A-1:edid/edid_lg_linux_cust.bin

I did "sudo clr-boot-manager update" too.

But after a reboot "dmesg" says:

platform DP-1: Direct firmware load for edid/edid_asus_linux_cust.bin failed with error -2
[drm:edid_load [drm]] *ERROR* Requesting EDID firmware "edid/edid_asus_linux_cust.bin" failed (err=-2)
platform HDMI-A-1: Direct firmware load for edid/edid_lg_linux_cust.bin failed with error -2
[drm:edid_load [drm]] *ERROR* Requesting EDID firmware "edid/edid_lg_linux_cust.bin" failed (err=-2)

So far it looks like I also need to update / rebuild the initramfs for this to work.

Is there any way I can do this manually or do I have to wait for the next kernel update?

DataDrake

We don't build an initramfs on the user's system. All of ours are prebuilt and distributed as-is.

[deleted]

DataDrake
Bummer, so I guess loading custom EDIDs is not gonna work on Solus at all?

DataDrake

[deleted] not during early boot at least, can't say for sure whether or not it's impossible.

[deleted]

DataDrake
I found these instructions for Clear Linux:
https://github.com/clearlinux/distribution/issues/1626#issuecomment-608980323

Creating an "initrd" image and putting it under "/etc/kernel/initrd.d".

Could that work for Solus too (since it borrows some concepts from Clear Linux IIRC) or would this blow up in my face?

DataDrake

[deleted] There's a chance it would work, but I can't say I've tested that, no.

[deleted]

DataDrake
Well looks like loading the EDIDs works now following those instructions (I did put the EDID files in "/lib/firmware/edid" tho and created the "initrd.img" with that folder structure):

[drm] Got external EDID base block and 1 extension from "edid/edid_asus_linux_cust.bin" for connector "DP-1"
[drm] Got external EDID base block and 1 extension from "edid/edid_lg_linux_cust.bin" for connector "HDMI-A-1"

And my monitor settings were reset so I guess the new EDIDs are being loaded.

Bad news is this didn't have the desired effect and the memory clock is still at max for "DP-1" and my TV still only does "YCbCr 4:2:0" instead of "YCbCr 4:4:4" or "RGB 4:4:4" on Linux. Maybe my EDID edits aren't right ...

Guess I have to keep praying to the GPU gods that AMD finally fixes the memory clock issue (happens on Windows too) and gives us a way to properly set the pixel format like on Windows (or forbid a proper GPU control panel).

At least a fix for the memory clock issue for the 6000 series might be coming to Linux 5.14 or 5.15 (https://gitlab.freedesktop.org/drm/amd/-/issues/1403).