Bug#1140659: powerdevil: Lacks permissions to access I2C devices

[Aurélien COUDERC]

Le mercredi 24 juin 2026, 11:10:31 heure d’été d’Europe centrale Borden a écrit 
:
> Package: powerdevil
> Version: 4:6.6.5-3
> Severity: normal
> X-Debbugs-Cc: borde...@tutanota.com
> 
> Dear Maintainer,

Hi,

> There are repeated errors in journald to this effect:
> 
> org_kde_powerdevil: Exception in function i2c_all_relevant_i2c_buses_rw:
> status=EACCES(-13): Permission denied
> org_kde_powerdevil:  libddcutil requires RW access to all /dev/i2c devices 
> that
> might be used for DDC.
> org_kde_powerdevil: Caused by:
> org_kde_powerdevil:  Exception in function i2c_open_bus_basic:
> status=EACCES(-13): Permission denied
> org_kde_powerdevil:  Open failed for /dev/i2c-0, errno=EACCES(-13): Permission
> denied in file i2c_bus_cor>

thanks for your bug report.
I cannot reproduce this myself.

May I ask for which device you’re running Debian on to get a bit more context ?

Would you mind pasting surrounding logs from org_kde_powerdevil ?


Thanks & happy hacking,
--
Aurélien