Laptop Dell Latitude D505.
Os: Debian 9.4 and Debian 8.10 net installers without a graphical environment.
I tried - acpi=on, noapic, nolapic, acpi=off, acpi=force, intel_idle.max_cstate=1, reboot=bios, reboot=acpi in the file /etc/default/grub (I have tried something else now I do not remember). But all these manipulations did not help me.
Also tried to disable the bios setting the Intel Speed step, but did not help.
A screenshot is provided below for a more detailed description.
1. https://files.fm/u/jucj4ajz
2. https://ru.files.fm/u/jucj4ajz
I ask for help in this matter because I can not turn off or restart the laptop normally. I have to forcibly turn off the laptop through the power button.
Scheduled Maintenance: We are aware of an issue with Google, AOL, and Yahoo services as email providers which are blocking new registrations. We are trying to fix the issue and we have several internal and external support tickets in process to resolve the issue. Please see: viewtopic.php?t=158230