Hi Everyone,
I have a new custom built PC (Hardware specs listed below) and have chosen to install CachyOS with KDE on it and the operating system works really except for one slight issue. When I put the system to sleep and it is asleep for a significant amount of time (For example, this morning, I knocked the mouse and the PC woke up at 7am this morning, I waited about half an hour and sent it back to sleep whilst I was working and then woke it up proper at 6pm) then the graphics doesn’t wake up properly.
The PC wakes up, the fans spin up and the RGB starts, the keyboard and mouse light up and the monitor changes to blue indicating it is awake but I get a black screen, no mouse cursor. I went to press Ctrl+Alt+Delete which seemed to trigger a restart, the CachyOS logo suddenly appeared with the spinny gif and then the PC switched to a black screen and the monitor switches to no signal detect as if it was going to restart but then nothing happens.
Normally I can see the motherboard go into a restart as it displays a red and orange light when POST begins but they never appear and pressing the reset button does not do anything, it’s as if the machine goes brain dead. I have to press and hold the power button to force the machine off, count to 5 and then power it back on again, at which point POST is a little bit longer but then the PC boots up. No such issue occurs in Windows 11 on the same PC and I have fast startup turned off.
I thought it may be to do with hibernation in Linux but I added several files to systemd that I am lead to believe disables hibernation and should force the machine to just do sleep. The display manager is SDDM and when I am initiating a sleep, it is at the login screen. Short sleeps work fine, I was preparing food and the machine went to sleep and woke up just fine, that would be about an hour and 30 minutes long.
So from what I can gather, when the machine is asleep for long enough and woken up, the core OS wakes up fine, but the graphical components crash and then fail to restart perhaps??? and then the subsequent attempt to reboot hangs on the power transition?
OS Specs are as follows:
- Linux 6.13.0-3-cachyos
- KDE Plasma 6.2.5
- KWin (Wayland)
- systemd 257.2-2-arch
Hardware Specs are as follows:
- ASRock X870 Pro RS WiFi
- AMD Ryzen 9 7900X @ 5.73 GHz
- 64 GB DDR5 RAM
- AMD Radeon RX7900 XT (20 GB) [Discrete]
- AMD Raphael [Integrated]
- BIOS Version 3.18.AS01 [Beta] (Dated 22/01/2025)
- Monitor is an Iiyama G-Master GB3461WQSU-B1 connected via DisplayPort
I seen the post by RodZe (Computer does not wake up from sleep) which sounds similar-ish but he is using an NVIDIA card, whereas mine is AMD.
Does anyone have any ideas on possible causes? Does anyone else use this motherboard and has encountered the same issue and fixed it?
If any more information is needed please ask but note I am still a beginner so please explain it like I’m five.
Thanks