Comment # 13 on bug 964562 from Hot MusicFan

Hello again to all! :)

After almost two weeks trying EVERYTHING for this issue (updating system BIOS,
playing with various options for ACPI in GRUB, writing scripts for halting the
USBs as suggested here--->
https://www.behnke.io/fedora-17-on-an-aspire-v5-571-reboot-on-shutdown/ ) and
results were just nothing finally I had a small indirect suggestion from some
of the articles I have read - that the problem might be with the Wi-Fi adapter.
I remembered that there were few times when after login the network manager
showed no connections and the checkbox for enabling the Wi-Fi was inactive.

I decided to turn off the Wi-Fi before shutdown the machine. The result was a
normal shutdown without the restart (tried several times!). But on the next
login the situation with the network manager was the same - no option for
connectivity.

I am one of the lucky owners of ProBook 4540s. But I am from the most "lucky"
ones who own a machine with RaLink RT3290 in it. This adapter gave me a lot of
headaches before. Now it showed its 'evil' again. I have blacklisted the
rt2800pci module in /etc/modprobe.d/50-blacklist.conf and now I'm using my
external TP-Link TL-WN721N instead of it. Just had to restart
NetworkManager.service and all was fine.

Technically there is a workaround but issue is not resolved. I think that the
problem is with rt2800pci driver which in fact was never the proper driver for
this adapter and has never had a full support for it (the Bluetooth part is not
working at all). It seems to me that it has a problem to apply a proper power
management to the adapter or it is someway broken and causes the problem. Just
to notice that until recently I have used Fedora 23 with rt2800pci enabled
(which managed to work properly with the adapter as far as the more recent
versions of the Linux kernel, without breaking the connectivity or failing to
keep speed as in the earlier ones) and there was no problem.

Nevertheless, thanks for the support and the spent time :)