I ran the following command to see what the dependencies were (see below).

Plasma-nm looks like its used for managing network connections, possibly mobile related. And wwan provides support for mobile broadband devices. Since I'm running this server on standard NICs (Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller), I don't see why ModemManager needs to be enabled.

[R@Y /usr]# dnf repoquery --whatrequires ModemManager Updating Subscription Management repositories. Unable to read consumer identity

This system is not registered with an entitlement server. You can use subscription-manager to register.

Last metadata expiration check: 0:02:32 ago on Thu 18 Nov 2021 03:50:15 PM EST. NetworkManager-wwan-1:1.32.0-0.1.el8.x86_64 NetworkManager-wwan-1:1.32.0-0.2.el8.x86_64 NetworkManager-wwan-1:1.32.0-0.3.el8.x86_64 NetworkManager-wwan-1:1.32.0-0.4.el8.x86_64 NetworkManager-wwan-1:1.32.0-0.5.el8.x86_64 NetworkManager-wwan-1:1.32.0-1.el8.x86_64 NetworkManager-wwan-1:1.32.10-2.el8.x86_64 NetworkManager-wwan-1:1.32.2-1.el8.x86_64 NetworkManager-wwan-1:1.32.3-0.z.2.20e3975fd2.el8.x86_64 NetworkManager-wwan-1:1.32.3-0.z.3.d8706caef2.el8.x86_64 NetworkManager-wwan-1:1.32.4-1.el8.x86_64 NetworkManager-wwan-1:1.32.6-1.el8.x86_64 NetworkManager-wwan-1:1.32.8-1.el8.x86_64 NetworkManager-wwan-1:1.34.0-0.1.el8.x86_64 NetworkManager-wwan-1:1.34.0-0.2.el8.x86_64 NetworkManager-wwan-1:1.34.0-0.3.el8.x86_64 plasma-nm-mobile-0:5.22.5-1.el8.x86_64

Thanks for the replies,

Jay

Without knowing what kind of network, what kind of workload etc.. the answer is 'no idea'. In most cases, you are going to have to make this sort of judgement yourself and in the end, if it is off and you needed it because some weird network or bluetooth keyboard acts like a modem.. then you can turn it on. [well if you have a plugged in keyboard.]

On Thu, 18 Nov 2021 at 10:00, Jay Hart jhart@kevla.org wrote:

...

Any answers here?????

Jay

...

For a hard wired only server, does ModemManger need to be enabled?

The only thing that ever might be hooked up to this server would be an external USB DVD drive.

Thanks in Advance,

Jay

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