Suspend just not working anymore

General system Kernel, boot, graphics & hardware
1

Lenovo Legion 5 AMD Ryzen7/RTX3070. All the usual tricks do not work anymore, just will not suspend on lid close and then gets quite warm.

Any ideas? I am running on the nVidia card, but cannot suspend on the AMD iGPU either.

2

@xircon ,
Try this kervel parameter. For GRUB here it is:

In /etc/default/grub, change line
`GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"`
to
`GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvidia.NVreg_RegistryDwords=EnableBrightnessControl=1"`
and save the file.
Run `sudo update-grub` and reboot.

Then the screen brightness becomes adjustable, both with Fn keys and in software. Plus, both screens come on after suspend without problem.

Source

1 Like
3

Well, it is systemd boot, not grub and my brightness works fine, but will give it a go (in /etc/kernel/cmdline). Will report back after I have eaten…

4

Seems to work! True test will be overnight, will report back tomorrow evening…

5

Nope, didn’t help, it was awake and toasty hot this morning.