*** This bug is a duplicate of bug 2163121 ***
https://bugs.launchpad.net/bugs/2163121
I have encountered the same issue and some searching online + Claude
ultimately led me to this solution:
GRUB_CMDLINE_LINUX_DEFAULT="acpi=force reboot=acpi apm=power_off debug
ignore_loglevel amdgpu.dcdebugmask=0x12 acpi_osi=Linux"
This fixed it.
I don't know why, I don't know how, I just know it seems to work (for now).
Maybe this helps other people too.
Here are my specs:
Operating System: Kubuntu 26.04 LTS
KDE Plasma Version: 6.6.6
KDE Frameworks Version: 6.24.0
Qt Version: 6.10.2
Kernel Version: 7.0.0-31-generic (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7700 8-Core Processor
Memory: 32 GB of RAM (30,9 GB usable)
Graphics Processor: AMD Radeon RX 7700 XT
Manufacturer: ASRock
Product Name: B850M Pro-A WiFi
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https://bugs.launchpad.net/bugs/2165664
Title:
Regression: System hangs on shutdown/reboot on kernel 7.0.0-30-generic
after active workload (persists across 7.0.0-28, -29, -30)
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