Arch Linux

a-curious-crow

Member

Registered: 2024-09-15

Posts: 27

Black screen after resuming from `systemctl suspend`

I recently upgraded my cpu from a ryzen 3100 to a 5500, and also unfortunately ran a `sudo pacman -Syu` at the same time.  Now, whenever I try to wake from suspend, I get a black screen and an unresponsive PC (even thought the computer fans start spinning).  I have an Nvidia RTX 2070 super GPU.

Any ideas what logs would be best to look at to try to debug this issue?  I tried `/var/log/Xorg.0.log` and `journalctl -xe`, but didn't see anything there.  Also it looks like my xorg log was from several days ago...

a-curious-crow

Member

Registered: 2024-09-15

Posts: 27

Re: Black screen after resuming from `systemctl suspend`

Some other info:

I attempted to roll my system back before my last update by adding

[core]
#Include = /etc/pacman.d/mirrorlist
SigLevel = PackageRequired
Server=https://archive.archlinux.org/repos/2025/04/20/$repo/os/$arch

to my pacman.conf.  The rollback worked, but my problem persisted.  This makes me think some configuration got changed somewhere that I'm not able to undo with a rollback like this.

I also tried following instructions at https://wiki.archlinux.org/title/NVIDIA … er_suspend, but without success (these nvidia services all seem to be enabled on my machine).

`systemctl hibernate` seems to work as expected (although it does log me out of my x session).

I cannot switch to a tty via ctrl+alt+f2 after waking.

I'm very confused as to what logs could even have info about this issue.  I don't even see a line saying the system is trying to sleep in journalctl or /var/log/Xorg.0.log.

Perhaps when upgrading my CPU something somewhere is no longer up to date with the CPU's identity?

a-curious-crow

Member

Registered: 2024-09-15

Posts: 27

Re: Black screen after resuming from `systemctl suspend`

I also tried switching to nvidia-open-lts and linux-lts, with no luck.

a-curious-crow

Member

Registered: 2024-09-15

Posts: 27

Re: Black screen after resuming from `systemctl suspend`

Now after (I think) reverting everything, my picom compositor refuses to work: when i start it all my windows freeze until I kill it .

a-curious-crow

Member

Registered: 2024-09-15

Posts: 27

Re: Black screen after resuming from `systemctl suspend`

OK I fixed the picom issue by switching by backend from glx to egl in my config file.