#60541 – Проблемы с i2c

Bug 60541 - Проблемы с i2c

Summary: Проблемы с i2c

Status:	NEW

Alias:	None

Product:	Sisyphus
Classification:	Development
Component:	ddcutil (show other bugs)
Version:	unstable
Hardware:	x86_64 Linux

Importance:	P5 critical
Assignee:	Yuri N. Sedunov
QA Contact:	qa-sisyphus

URL:
Keywords:

Depends on:
Blocks:

Reported:	2026-09-15 12:02 MSK by Sergey V Turchin
Modified:	2026-09-24 11:11 MSK (History)
CC List:	6 users (show)

See Also:

Attachments
Ругань на /dev/tty12 (199.54 KB, image/jpeg) 2026-09-21 17:28 MSK, ruslandh	no flags	Details
Ругань после создания вручную группы i2c (211.34 KB, image/jpeg) 2026-09-21 17:30 MSK, ruslandh	no flags	Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description

Sergey V Turchin 2026-09-15 12:02:34 MSK

Выявлены проблемы с работой с i2c.

Comment 1

Sergey V Turchin 2026-09-15 12:02:40 MSK

сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_connector:  (null)
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_devname:    /dev/dri/card1
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_devmode:    (null)
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_hotplug:    (null)
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_major:      226
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    prop_minor:      1
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    sysname:         card1
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    syspath:         /sys/devices/pci0000:00/0000:00:02.0/drm/card1
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590738]    attr_name:       (null)
сен 14 12:14:19 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][622.590819] (dw_watch_display_connections) Time since last return from sleep = 622345357362 ns = 622345 ms
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352160] Udev event detected
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367] Udev_Event_Detail
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_subsystem:  i2c-dev
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_action:     change
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_connector:  (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_devname:    /dev/i2c-6
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_devmode:    (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_hotplug:    (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_major:      89
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    prop_minor:      6
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    sysname:         i2c-6
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    syspath:         /sys/devices/pci0000:00/0000:00:02.0/i2c-6/i2c-dev/i2c-6
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352367]    attr_name:       i915 gmbus tc1
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][623.352467] (dw_watch_display_connections) Time since last return from sleep = 623107004472 ns = 623107 ms
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159116] Udev event detected
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275] Udev_Event_Detail
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_subsystem:  i2c-dev
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_action:     change
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_connector:  (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_devname:    /dev/i2c-8
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_devmode:    (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_hotplug:    (null)
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_major:      89
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    prop_minor:      8
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    sysname:         i2c-8
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    syspath:         /sys/devices/pci0000:00/0000:00:02.0/i2c-8/i2c-dev/i2c-8
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159275]    attr_name:       i915 gmbus tc3
сен 14 12:14:20 riderbook org_kde_powerde[2882]: UNSPECIFIED (__progname="org_kde_powerdevil" uid=1000 euid=1000): [  3293][624.159372] (dw_watch_display_connections) Time since last return from sleep = 623913910699 ns = 623914 ms

Comment 2

Sergey V Turchin 2026-09-15 12:03:35 MSK

На версии 2.2.1(как в Fedora) проблем не обнаружено.

Comment 3

Sergey V Turchin 2026-09-15 12:04:01 MSK

В апстриме уже 3.0.1

Comment 4

Sergey V Turchin 2026-09-15 12:04:43 MSK

https://github.com/rockowitz/ddcutil/releases/tag/v3.0.0
"Users of KDE Plasma will want to update as soon as possible."

Comment 5

Sergey V Turchin 2026-09-15 12:23:50 MSK

Т.е. нужно либо откатить до 2.2.1 либо обновить до 3.0.1

Comment 6

ruslandh 2026-09-21 17:28:46 MSK

Created attachment 22255 [details]
Ругань на /dev/tty12

Ругань на /dev/tty12

Comment 7

ruslandh 2026-09-21 17:30:11 MSK

Created attachment 22256 [details]
Ругань после создания вручную группы i2c

Т.е. правил usev не хватает для устройств ?

Comment 8

ruslandh 2026-09-21 17:30:35 MSK

(Ответ для ruslandh на комментарий #7)
> Создано вложение 22256 [details] [подробности]
> Ругань после создания вручную группы i2c
> 
> Т.е. правил usev не хватает для устройств ?

udev

Comment 9

ruslandh 2026-09-21 17:32:33 MSK

# udevadm info /dev/i2c-6
P: /devices/pci0000:00/0000:00:02.0/i2c-6/i2c-dev/i2c-6
M: i2c-6
R: 6
J: c89:6
U: i2c-dev
D: c 89:6
N: i2c-6
L: 0
E: DEVPATH=/devices/pci0000:00/0000:00:02.0/i2c-6/i2c-dev/i2c-6
E: DEVNAME=/dev/i2c-6
E: MAJOR=89
E: MINOR=6
E: SUBSYSTEM=i2c-dev
E: USEC_INITIALIZED=11721935
E: NVME_HOST_IFACE=none
E: ID_PATH=pci-0000:00:02.0
E: ID_PATH_TAG=pci-0000_00_02_0
E: ID_FOR_SEAT=i2c-dev-pci-0000_00_02_0
E: TAGS=:uaccess:seat:
E: CURRENT_TAGS=:uaccess:seat:

$ ddcutil capabilities -b 6
No monitor detected on bus /dev/i2c-6
От root то-же самое

Comment 10

Sergey V Turchin 2026-09-24 10:21:05 MSK

Николай, откати ddcutil до 2.2.1 и поставь на Hold в apt.

Comment 11

Anton Farygin 2026-09-24 11:04:36 MSK

проблема критичная для всех пользователей KDE. просьба исправить..

Comment 12

Sergey V Turchin 2026-09-24 11:11:13 MSK

(Ответ для Sergey V Turchin на комментарий #10)
> Николай, откати ddcutil до 2.2.1 и поставь на Hold в apt.
И libddcutil5, соответственно.