Debian 9 - NetworkManager show wifi list but not working

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Re: Debian 9 - NetworkManager show wifi list but not working

Postby n_hologram » 2018-02-25 01:03

Bulkley, did you see the original post? It included some bizarre names for common interfaces. Also, the op has, if I followed correctly, two wireless interfaces: internal and USB. The link you posted seems excellent if there is only one interface.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby Bulkley » 2018-02-25 02:02

n_hologram wrote:Bulkley, did you see the original post? It included some bizarre names for common interfaces.


You are right. I fogged over when I read all that.

n_hologram wrote:Also, the op has, if I followed correctly, two wireless interfaces: internal and USB.


Any possibility that the two interfaces are confusing Network Manager? I'd pull out that USB and concentrate on getting the on-board to work. Since this is a desktop that doesn't go anywhere I'd keep it simple and use wpa-supplicant instructions in /etc/network/interfaces.

I wonder if the OP would be better off installing the unofficial Debian that comes with drivers. I installed MX on my laptop sand everything works, including Network Manager.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby Thorny » 2018-02-25 09:00

n_hologram wrote: It included some bizarre names for common interfaces.

Those are called "Predictable Interface Names", the new and modern way systemd enumerates interfaces.

I like Bulkley's suggestion to look at the Wiki, How to use, and/or using the install that includes firmware.
Last edited by Thorny on 2018-02-25 11:37, edited 1 time in total.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby Thorny » 2018-02-25 09:21

Another minor point, this thread should probably be in Installation rather than General Discussion.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby Thorny » 2018-02-25 16:16

n_hologram wrote:... This is probably outside my expertise,

n_hologram I don't think it is, trust your tests.

I'm an old guy and I won't be here much longer, it is to everyone's benefit that you become adept because you put in the effort to help.

I'll make some suggestions:

I think the OP's description of the issue is a bit obscure and somewhat confusing.

Tests indicate that there is only an ethernet interface on the pci buss. It's a desktop, they often don't come with installed or embeded WiFi interfaces. OP didn't tell us the make and model number as suggested by Lysander so we can't check that.

The wireless, as you have identified is USB, the Ralink. The driver should already be in the kernel so check the Ralink page to ensure that it is one of the "supported devices", just in case.

Ensure that the ralink firmware is installed and in use.

Proceed using the knowledge you now have about predictable interface names with the Wiki, WiFi,HowToUse, that Bulkley suggested. It hasn't been updated for Predictable Names but you could figure it out by replacing wlan0 with the new interface name.

At least that's how I would approach it. If it doesn't work after that, I'll be lost too.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby n_hologram » 2018-02-26 00:31

Thorny wrote:
n_hologram wrote:... This is probably outside my expertise,

n_hologram I don't think it is, trust your tests.
I'm an old guy and I won't be here much longer, it is to everyone's benefit that you become adept because you put in the effort to help.

I meant that I don't use NetworkManager or systemd, so it would be blind-leading-blind in terms of specific software or gui help. Comparing the output of lspci (no wireless devices) and lsusb (sees the ralink device) seems rather confusing, but I guess it signifies that s/he has removed the intel card already? Also, the network card is on the list in the WiFi/rt73 page, verbatim from the lsusb output, so that's a good sign.

Based on my own (quick) readings of predictable network interfaces, it seems like a clue could be embedded in the interface name (wlx000ee8d4194e): that is, if I'm reading this correctly, the MAC address might be 00:03:e8:d4:19:4e. If that's the case, and you can find the mac of the Ralink dongle (they're sometimes written on the physical device itself), you can at least determine if the card is the one that's showing up.

know that some network managers (like wicd) require you to specify your network device in their settings; my guess is that you want to make sure
wlx000ee8d4194e is configured properly in NetworkManager, because you switched from an intel wireless card, which would have had a different "predictable network interface" name -- in other words, NM might still be trying to look for wlxi[intel mac address], and if my prediction earlier based on the lspci output (that you removed the intel card) is correct, then NM is looking for a nonexistent device.

However, if you've done all that and NM doens't work out, I would also advise following Bulkley's suggestion to try another network manager, whether it be wicd, wpa_supplicant, or network/interfaces. (You're welcome to try out my awful networking script, too!)

Also, Thorny: stick around as long as you can :)
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby andrea96 » 2018-02-26 21:17

n_hologram wrote:Bulkley, did you see the original post? It included some bizarre names for common interfaces. Also, the op has, if I followed correctly, two wireless interfaces: internal and USB. The link you posted seems excellent if there is only one interface.

Yes, as you said I have two interfaces: internal and USB.

Bulkley wrote:Any possibility that the two interfaces are confusing Network Manager?

That's what I thought too.

Thorny wrote:Those are called "Predictable Interface Names", the new and modern way systemd enumerates interfaces.

In fact, I had read something like that, but I didn't think it could be a problem for network manager.

Thorny wrote:I like Bulkley's suggestion to look at the Wiki, How to use, and/or using the install that includes firmware

Thanks, I will follow the his suggestion.

n_hologram wrote:However, if you've done all that and NM doens't work out, I would also advise following Bulkley's suggestion to try another network manager, whether it be wicd, wpa_supplicant, or network/interfaces. (You're welcome to try out my awful networking script, too!

Probably, if I can't solve the problem, in the next days I will try wicd as network manager.

Anyway, I will read again all the answers in the next days and I will try to solve the problem, I thank all of you to try to help me, and I'm sorry for my inaccuracies in the original post.
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Re: Debian 9 - NetworkManager show wifi list but not working

Postby Bulkley » 2018-02-26 22:12

Just a precaution: wicd and network-manager fight each other. You can use one or the other but not both. It is possible to disable one while using the other but most of us remove the one we won't use.

Wpa-supplicant is the program that actually connects wifi. Programs like wicd and network-manager are GUIs that configure Wpa-supplicant. They are convenience tools and very handy for laptops that move around. For desktops that don't move and only need one connection it is easier to use Wpa-supplicant wich is configured in /etc/network/interfaces.

andrea96, I don't mean to drive you away but if you find that this is more trouble than it's worth, take a look at MX Linux. I put MX on a laptop a few weeks ago and everything worked out of the box. Network-manager found my Wifi and all it needed was the password.
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