https://bugs.kde.org/show_bug.cgi?id=521287
Bug ID: 521287
Summary: org_kde_powerdevil reporting Device /dev/i2c-* lacks
R/W permissions
Classification: Plasma
Product: plasmashell
Version First 6.6.5
Reported In:
Platform: openSUSE
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Power management & brightness
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
DESCRIPTION
The systemd User Journal is reporting that, the KDE PowerDevil wants to access
the /dev/i2c-* devices -
which is absolutely impossible for a user process in a current Linux system.
STEPS TO REPRODUCE
1. Boot the system
2. Login
3. Check the systemd User Journal
OBSERVED RESULT
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-1 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-2 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-3 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-4 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-5 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-6 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-7 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-8 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-9 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-10 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-11 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-1 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-2 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-3 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-4 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-5 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-6 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-7 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-8 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-9 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-10 lacks R/W
permissions
Jun 10 10:48:44 org_kde_powerdevil[2945]: [ 3042] Device /dev/i2c-11 lacks R/W
permissions
EXPECTED RESULT
That the KDE PowerDevil doesn't attempt the access the I2C devices from a user
process.
> ls -aldZ /dev/i2c-*
crw-------. 1 root root system_u:object_r:tty_device_t:s0 89, 0 10. Jun 10:42
/dev/i2c-0
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 1 10. Jun 10:55
/dev/i2c-1
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 10 10. Jun 10:55
/dev/i2c-10
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 11 10. Jun 10:55
/dev/i2c-11
crw-------. 1 root root system_u:object_r:tty_device_t:s0 89, 12 10. Jun 10:42
/dev/i2c-12
crw-------. 1 root root system_u:object_r:tty_device_t:s0 89, 13 10. Jun 10:42
/dev/i2c-13
crw-------. 1 root root system_u:object_r:tty_device_t:s0 89, 14 10. Jun 10:42
/dev/i2c-14
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 2 10. Jun 10:55
/dev/i2c-2
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 3 10. Jun 10:55
/dev/i2c-3
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 4 10. Jun 10:55
/dev/i2c-4
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 5 10. Jun 10:55
/dev/i2c-5
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 6 10. Jun 10:55
/dev/i2c-6
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 7 10. Jun 10:55
/dev/i2c-7
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 8 10. Jun 10:55
/dev/i2c-8
crw-rw----+ 1 root root system_u:object_r:tty_device_t:s0 89, 9 10. Jun 10:55
/dev/i2c-9
>
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20260608
KDE Plasma Version: 6.6.5
KDE Frameworks Version: 6.26.0
Qt Version: 6.11.1
Kernel Version: 7.0.11-1-default (64-bit)
ADDITIONAL INFORMATION
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