Package: libddcutil5
Version: 2.2.0-2
Severity: important
Tags: upstream
Dear Maintainer,
*** Reporter, please consider answering these questions, where
appropriate ***
* What led up to the situation?
* What exactly did you do (or not do) that was effective (or
ineffective)?
* What was the outcome of this action?
* What outcome did you expect instead?
*** End of the template - remove these template lines ***
I encountered a bug with the current version of libddcutil used in Debian 13
Trixie, the bug in question affects the power management settings of KDE
Plasma
of Laptop and desktop users, for example, battery indicator dissapears,
screen
brightness keys do not work and the impossibility to switch the system power
profile.
This occurs when the machine wakes up after suspension. Here are some logs.
This bug is already fixed upstream with the version 2.2.1
https://bugs.kde.org/show_bug.cgi?id=500843
-- System Information:
Debian Release: 13.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.16.8-x64v3-xanmod1 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_CPU_OUT_OF_SPEC, TAINT_WARN, TAINT_OOT_MODULE,
TAINT_UNSIGNED_MODULE
Locale: LANG=es_MX.UTF-8, LC_CTYPE=es_MX.UTF-8 (charmap=UTF-8),
LANGUAGE=es_MX:es
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages libddcutil5 depends on:
ii libc6 2.41-12
ii libdrm2 2.4.124-2
ii libglib2.0-0t64 2.84.4-3~deb13u1
ii libjansson4 2.14-2+b3
ii libudev1 257.8-1~deb13u2
ii libusb-1.0-0 2:1.0.28-1
ii libx11-6 2:1.8.12-1
ii libxext6 2:1.3.4-1+b3
ii libxrandr2 2:1.5.4-1+b3
ii pci.ids 0.0~2025.06.09-1
ii usb.ids 2025.07.26-1
ii usbutils 1:018-2
libddcutil5 recommends no packages.
libddcutil5 suggests no packages.
-- no debconf information
*** /home/jehu/Escritorio/powerdevil-logs.txt
systemctl --user status plasma-powerdevil.service
○ plasma-powerdevil.service - Powerdevil
Loaded: loaded (/usr/lib/systemd/user/plasma-powerdevil.service; static)
Active: inactive (dead) since Sun 2025-09-21 18:15:10 CST; 43min ago
Duration: 2h 8min 34.406s
Invocation: 255aa4fd561d416f85a9b1346cdff52d
Process: 2849 ExecStart=/usr/lib/x86_64-linux-
gnu/libexec/org_kde_powerdevil (code=killed, signal=TERM)
Main PID: 2849 (code=killed, signal=TERM)
Mem peak: 14M
CPU: 1.158s
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: [ 3179] Assertion
failed: "bus_info" in file ddc_packet_io.c at line 266
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: QSocketNotifier:
Socket
notifiers cannot be enabled or disabled from another thread
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: QtDBus: cannot relay
signals from parent QObject(0x565061118c00 "") unless they are emitted
in the
object's thread QThread(0x56506101bda0 "Qt mainThread"). Current thread is
QThread(0x5650610b8568 "").
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: [ 3179] Watch thread
terminated.
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: QMutex: destroying
locked mutex
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: [ 3179] Attempting to
unlock display lock owned by different thread
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: [ 3179] Unexpected
error DDCRC_LOCKED from unlock_display_by_dpath(Display_Path[/dev/i2c-5])
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerdevil[2849]: libddcutil
terminating.
sep 21 18:15:10 MSI-TOMAHAWK org_kde_powerde[2849]: g_source_unref_internal:
assertion 'source != NULL' failed
sep 21 18:15:10 MSI-TOMAHAWK systemd[2458]: plasma-powerdevil.service:
Consumed
1.158s CPU time, 14M memory peak.
