Package Details: ddcci-driver-linux-dkms 0.4.5-1

Git Clone URL: https://aur.archlinux.org/ddcci-driver-linux-dkms.git (read-only, click to copy)
Package Base: ddcci-driver-linux-dkms
Description: A pair of Linux kernel drivers for DDC/CI monitors (DKMS)
Upstream URL: https://gitlab.com/ddcci-driver-linux/ddcci-driver-linux/
Keywords: backlight hdmi monitor
Licenses: GPL2
Conflicts: ddcci-driver-linux
Submitter: irtimmer
Maintainer: ewout (Porous3247)
Last Packager: Porous3247
Votes: 35
Popularity: 0.82
First Submitted: 2017-04-15 18:51 (UTC)
Last Updated: 2024-07-24 04:30 (UTC)

Latest Comments

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DLAN commented on 2022-08-05 01:13 (UTC) (edited on 2022-08-06 20:31 (UTC) by DLAN)

I am missing something. I have the package installed along with linux-headers and dkms. I added i2c-dev and ddcci_backlight to etc/modules-load.d/ddcci.conf, but still the monitors don't show up in backlightctl. I am able to control the brightness through xrandr though, although I could do that before installing this package.

Edit: I was able to get ddcutil control working by following the suggestion here (for nvidia cards): https://forums.developer.nvidia.com/t/gddccontrol-issues-with-nvidia-drivers-i2c-monitor-display-ddc-dp-hdmi-failing/30427/61

I added 

options nvidia NVreg_RegistryDwords=RMUseSwI2c=0x01;RMI2cSpeed=100

to /etc/modprobe.d/nvidia-backlight.conf and rebooted.

witwicky commented on 2022-07-15 15:16 (UTC) (edited on 2022-07-15 15:20 (UTC) by witwicky)

Simply creating a /etc/modules-load.d/ddcci.conf that contains

i2c-dev and ddcci_backlight

did the trick for me after I've been struggling for eternity while trying to get it working with systemd units and building modules into the initramfs.

Doesn't work if ddcci is loaded instead of ddcci_backlight - don't ask me why.

<deleted-account> commented on 2022-07-10 19:09 (UTC)

Be sure to add the i2c-dev and ddcci modules to mkinitcpio.conf

stas commented on 2022-02-16 19:26 (UTC)

This is a great package, but can it specify the required dependencies please: dkms and linux-headers?

tukusejssirs commented on 2022-01-15 18:57 (UTC)

I tried to install this package, but the following error was shown:

 -> Could not find all required packages:
    ddci-driver-linux (Target)

Is there a missing dependency or am I missing a package?

bms commented on 2021-11-14 00:59 (UTC)

FYI: this will not compile with recent kernels due to kernel commit fc7a6209d5710618eb4f72a77cd81b8d694ecf89 (a trivial callback signature change). A merge request request is currently pending upstream which will bump the version too, but the fix is easy to apply in the meantime if needed: https://gitlab.com/ddcci-driver-linux/ddcci-driver-linux/-/merge_requests/8?commit_id=bf9d79852cbd0aa5c2e288ce51b8280f74a1f5d2

<deleted-account> commented on 2021-11-11 23:48 (UTC)

Just an FYI: I had to add myself to the i2c group and copy over the ddcci udev rules to get this working on startup

Andrei_Korshikov commented on 2021-08-20 04:37 (UTC)

Well, it depends on situation. There is no hang at boot now, I confirm, but ddcci_backlight still can't detect external (HDMI) monitor during sddm.service startup. So, in my use case (laptop with intel's video and external HDMI monitor) I still need systemd unit with Before=sddm.service.

SebastienWae commented on 2021-08-17 11:50 (UTC)

fyi once the package is updated to 0.4 Andrej.Korshikov workaround will no longer be needed, ddcci_backlight can be loaded from /etc/modules-load.d/

jiri.one commented on 2021-04-03 08:28 (UTC)

Andrej.Korshikov you are right. So I am going to correct myself: you don't need this dkms if you want to control backlight only on one screen :-).

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