First, this is my first kernel bug report, so I apologize in advance if I get anything wrong. Second, on kernel version 5.10.113 and 5.10.115 my PC fails to properly wake up when suspended to RAM. I essentially get a black screen, however I can switch exactly once to TTY1 by using Alt+Ctrl+F1. Then it displays a couple of status messages but fails to do anything else. After that even REISUB fails to restart the PC and I need to manually turn the power off. The issue first arises with version 5.10.113. The bug still persists in 5.10.115. When using PM_TRACE I get the following debug message from "dmesg", so I am somewhat confident it is bug related to the ACPI module. > [ 0.735634] PM: Magic number: 0:356:296 > [ 0.735635] PM: hash matches drivers/base/power/main.c:904 > [ 0.735686] tty tty29: hash matches > [ 0.735696] pci 0000:44:00.0: hash matches > [ 0.735713] acpi STK0003A:00: hash matches I am on NixOS 21.11. My motherboard is a ASRock TRX40 Creator and my CPU is a AMD Ryzen Threadripper 3960X.
It's unlikely anyone will be able to help you unless you help yourself by performing `git bisect`.
Also, it makes sense to test the latest stable kernel, 5.17.9.
I used `git bisect` and found the commit with the regression. Relevant discussion here: https://bugzilla.kernel.org/show_bug.cgi?id=215798 Also my bug report is a duplicate of: https://bugzilla.kernel.org/show_bug.cgi?id=215949 *** This bug has been marked as a duplicate of bug 215949 ***