https://bugs.kde.org/show_bug.cgi?id=513226
Bug ID: 513226
Summary: After installing KDE 6.5.4 on CachyOS a few days ago,
the computer freezes when it is about to enter
automatic sleep mode defined by time.
Classification: Plasma
Product: plasmashell
Version First 6.5.4
Reported In:
Platform: CachyOS
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Power management & brightness
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: 1.0
Created attachment 187529
--> https://bugs.kde.org/attachment.cgi?id=187529&action=edit
CachyOS log of 2025-12-11.
When the computer is about to enter scheduled sleep mode, PowerDevil displays
an error message in the log and the system freezes, with the only option being
to restart the computer:
11/12/25 17:58 org_kde_powerdevil Error detecting VCP version using VCP
feature xDF: Error_Info[EIO in ddc_write_read_with_retry, causes:
DDCRC_READ_ALL_ZERO, DDCRC_DDC_DATA(2), EIO]
11/12/25 17:58 org_kde_powerdevil [ 1535] Error detecting VCP version
using VCP feature xDF: Error_Info[EIO in ddc_write_read_with_retry, causes:
DDCRC_READ_ALL_ZERO, DDCRC_DDC_DATA(2), EIO]
I've attached the log to this post.
It appears to be a regression error; my system was working perfectly until I
installed KDE 6.5.4.
Here are my system details:
Operating System: CachyOS Linux
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.18.0-5-cachyos (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 8845HS w/ Radeon 780M Graphics
Memory: 64 GiB of RAM (59,7 GiB usable)
Graphics Processor: AMD Radeon 780M Graphics
Manufacturer: GMKtec
Product Name: NucBox K8 Plus
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