https://bugs.kde.org/show_bug.cgi?id=517689
Bug ID: 517689
Summary: powerdevil crash due to assertion in ddcutil on a
laptop without a ddc screen
Classification: Plasma
Product: plasmashell
Version First 6.6.2
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: crash
Priority: NOR
Component: Power management & brightness
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
Created attachment 190730
--> https://bugs.kde.org/attachment.cgi?id=190730&action=edit
org_kde_powerdevil core dump info
Powerdevil crashed after I locked and then unlocked my laptop. The debug info
are attached.
Some relavant info:
```
$ pacman -Q powerdevil ddcutil
powerdevil 6.6.2-1
ddcutil 2.2.6-1
$ ddcutil detect
Invalid display
I2C bus: /dev/i2c-11
DRM_connector: card1-eDP-1
EDID synopsis:
Mfg id: EDO - UNK
Model: EDO142
Product code: 322 (0x0142)
Serial number:
Binary serial number: 1127305010 (0x43314f32)
Manufacture year: 2025, Week: 42
This is a laptop display. Laptop displays do not support DDC/CI.
$ kinfo
Operating System: Arch Linux
KDE Plasma Version: 6.6.2
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 6.19.8-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 18 × Intel® Core™ Ultra 5 125H
Memory: 32 GiB of RAM (30.9 GiB usable)
Graphics Processor: Intel® Arc
```
The crash might be a regression (since I recently ran `pacman -Syuu` and
rebooted my system, but I'm not sure). There is no stable way to reproduce it
(My assumption is that it can be trigger by a lock-unlock operation, with some
luck).
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