Posts tagged: suspend
I Wrote a Fish Script to Check If My Laptop Will Survive the Next Suspend
A 5-stage fish shell script that verifies the amdgpu dcdebugmask fix is active after every reboot — checking /proc/cmdline, Limine config, DMCUB errors, suspend cycles, and module health.
My Laptop Froze on the Second Suspend — I Had to Hold the Power Button
First suspend worked fine. Second suspend required a hard power-off. The logs pointed to an AMD DMCUB firmware hang, and dcdebugmask=0x10 wasn't strong enough.
The Six Bits That Fixed My Laptop — amdgpu.dcdebugmask Explained
Second suspend hard-froze my laptop until I changed one kernel parameter from 0x10 to 0x600. Here's what each bit actually does inside the AMD display driver.