Halacs's questions

I have PCI-E USB extension cards which are not working properly after a kernel update: USB devices are detected but dropped immediately. This means I cannot use, for example, my wireless headphone's USB stick in that extension card only in a USB slot of the motherboard.

I experience the issue since linux-image-6.8.0-40-generic kernel package was installed in my Ubuntu 22.04 LTS then also in Ubuntu 24.04 LTS with 6.8.0-44-generic.

Any idea how to fix it?

5:00.0 USB controller: VIA Technologies, Inc. VL805/806 xHCI USB 3.0 Controller (rev 01)

dmesg:

[   68.549318] xhci_hcd 0000:02:00.0: xHCI host not responding to stop endpoint command
[   68.613928] xhci_hcd 0000:02:00.0: Host halt failed, -110
[   68.613931] xhci_hcd 0000:02:00.0: xHCI host controller not responding, assume dead
[   68.613943] xhci_hcd 0000:02:00.0: HC died; cleaning up

I have a latest Ubuntu 20 LTS dekstop with cinnamon UI. If I turn on my PC but don't log in, my PC go to sleep after a while, getting unreachable via SSH. I can wake it up by pressing a button on the keyboard locally, but with wake-on-lan.

How I can prevent to go into sleep?

I googled it a lot and tried to set IdleAction=ignore in /etc/systemd/logind.conf file and few other things as below, but nothing helped. What else I can do to avoid going into sleep state? I want to reach that PC remotely as well so quite important. Thanks a lot in advance! I guess this is something related to Ubuntu's login screen as logind.conf helped me in case of an Ubuntu server.

$ sudo su
# su lightdm -s /bin/bash
# gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout 0