Verizon wireless modem not working in Porteus Version 3

[jmhoward56]

Here is psinfo for current system state.
http://pastebin.com/KpCv0WDY

[jmhoward56]

So if I unplug modem and then try to plug back in it appears to go back to doing same thing as before, connects momentarily then drops. So I tried the reboot procedure and it was still doing same thing, connected for a second or two then dropped. Then I noticed I was plugged in to a usb2 port, plugged in to a usb3 port and rebooted and it connected this time. Issue seems to be related to usb3 maybe.

[jmhoward56]

As long as I boot with the device in the usb3 port it will work, anything else fails even unplugging and plugging back in the usb3 port it was plugged in before.

[jmhoward56]

After several searches on Google I saw a few posts that mentioned there might be some issues with certain computers usb3 ports and the newer ModemManager and NetworkManager. I am thinking about trying to compile and downgrade to the ones from Slackware 14.0. I was wanting to know if there are any dependencies that I might break doing this or that might prevent the older ones from compiling. I noticed that you added iproute2 to the Porteus 3 versions and wondered about any issues with it I might encounter.

[brokenman]

I don't think you will have any trouble downgrading as long as you downgrade both ModemManager and NetworkManager together. There was a jump to ModemManager-1.0 in 14.1
Also you probably won't need the libsecret dependency for the slackware 14.0 version of NetworkManager to compile.

[jmhoward56]

Problem solved some what. Last night when trying to connect to internet the modem said there was a firmware update available so I downloaded and installed it. I immediately thought of my connection problems in Slackware 14.1 so I found a usb with Porteus 3.01 on it and booted it up. I then inserted the newly updated Pantech usb modem and tried to connect and was met with the same problems as before. This morning I was going back over notes from before and decided to try downgrading ModemManager and NetworkManager. I downloaded these txz packages from a Slackware 14.0 repository, created xzm modules from them and copied them to modules folder. Next I booted up Porteus, fired up a terminal and went into /etc/rc.d. There I changed permissions on rc.networkmanager to 755 and started the network manager daemon. I then inserted the usb modem waited for it to initialize and presto, here I am on the internet and posting this on the forum. I am going to test it for a few days and if it continues working I will finally update my laptop to Slackware 14.1.
PS How do I marked as solved?

[wread]

The laptop is bad or the Porteus download is corrupted. Please check the md5sums!

[jmhoward56]

The laptop is not bad, the modem works just fine if I boot to Windows and connect it. It also works just fine on my Slackware 14.0 install on the laptop. It did not work if I try to run it on Slackware 14.1 with the newer ModemManager and NetworkManager. Since I have downgraded to to Slackware 14.0 ModemManager and NetworkManager I have it working so far.

[jmhoward56]

I also downloaded all versions of Porteus, KDE. Mate, LXQT, and Xfce and installed on different usb thumb drives. There is something with ModemManager, NetworkManager and the cdc_ether kernel module from what I can determine.