Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-signed-hwe-5.11 (Ubuntu)
Status: New => Confirmed
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You saved my day.
I also install cuda stuff from nvidia driver repository (using ubuntu 20.04 and
needed cuda 11)
/etc/systemd/system/systemd-suspend.service.requires contained symbolic links
which point to /lib/systemd/system/nvidia-resume.service
removing these symbolic links made suspend wor
For whatever reason (old config, or nvidia unreasonable default) the new
driver got installed with `PreserveVideoMemoryAllocations=1`, which
without additional nvidia services doesn't work, and so suspend breaks.
To fix:
```shell
echo 'options nvidia NVreg_PreserveVideoMemoryAllocations=0' | sudo
Installed nvidia drivers
`sudo apt install nvidia-driver-470 --install-recommends`
suspend broke. Did `sudo prime-select on-demand`, but no luck.
```
user@myLaptop:~$ journalctl -b | grep suspend
Dec 06 23:01:18 myLaptop ModemManager[1620]: [sleep-monitor] system is
about to suspend
Dec 06
Reverted to the mainline kernel and hwe:
`sudo apt install linux-generic-hwe-20.04 --install-recommends`
suspend still works
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Sorta solved it.
So, after all the above shenanigans `sudo pm-suspend` finally started
working from GNOME.
So I went after `systemctl suspend`.
`journalctl -b | grep suspend`
was throwing a bunch of
```
Could not acquire inhibitor lock:
GDBus.Error:org.freedesktop.DBus.Error.NoReply: Message
Downgraded using bazooka method.
```shell
sudo apt install linux-generic
sudo apt purge '.*-hwe-.*'
dpkg -l | grep -i 5.11.0- | awk '{print $2}' | xargs -n1 sudo apt purge -y
sudo apt autoremove
```
Didn't help.
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Decided to get rid of nvidia just in case. Didn't help.
```shell
sudo apt remove --purge '.*nvidia.*'
sudo apt reinstall --install-recommends linux-generic-hwe-20.04
```
---
> `linux-generic-hwe-20.04` this thing being rolling is really not
helpful. Can't even downgrade.
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** Package changed: ubuntu => linux-signed-hwe-5.11 (Ubuntu)
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https://bugs.launchpad.net/bugs/1953235
Title:
systemctl suspend stopped working: laptop immea
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