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salvia's questions

Martin Hope
salvia
Asked: 2016-07-14 05:22:54 +0800 CST
  • 1

Since the upgrade to 16.04 this command:

sudo service network-manager stop && sudo macchanger -r wlan0 && sudo service network-manager start

returns:

[ERROR] Could not change MAC: interface up or insufficient permissions: Device or resource busy

It should change the MAC, given that I sudoed, but no.

I also tried:

sudo ip link set wlan0 down && sudo ip link set dev wlan0 address 46:74:26:d5:17:04 && sudo ip link set wlan0 up

In this case, MAC was changed, the IP did not ( I always got new IP's when changing MAC) and no connection was reached

A third try:

sudo ip link set wlan0 down && sudo macchanger -r wlan0 && sudo ip link set wlan0 up

MAC did change, IP did not, and no connection was reached.

What do I have to do to get macchanger to work again?

networking
Martin Hope
salvia
Asked: 2016-06-18 02:03:04 +0800 CST
  • 0

On booting my laptop, right after BIOS is loaded I see on my screen:

/dev/sda1: clean, 116918/19275776 files, 66284199/77094912 blocks

I have two questions:

  1. If I'm seeing that information, is it a sign that something is dying/already broken? It started appearing 3 days ago.

  2. The first number to the left of the forward slash for both files and blocks it's with each booting different (I mean 116918 and 66284199). What do those numbers indicate? Is it a problem?

files
Martin Hope
salvia
Asked: 2016-06-17 06:32:51 +0800 CST
  • 3

I'm having problems with my old laptop: Ahtec clevo m7xsun from 2009, xubuntu 16.04 64 bits, kernel 4.4.0.25 and upstream 4.7.0.22 for testing. There are 4 GiB of installed RAM in 2 modules. Sometimes the BIOS detects the whole 4 GiB, sometimes just 2. I have exchanged the modules several times, so I don't believe one of the modules is broken. I was suggested to run memtest, which I did, and as you can see in the picture, after having finished a first pass in almost 2 hours, it didn't detect any errors.

enter image description here

I marked 3 points in the picture: 1, 2 and 3:

1: 2048M - 3070M 1022M of 4093M: the only thing I understand is 4093M (4 GiB RAM, my total ammount of RAM. What do the other numbers indicate?

2: Please notice this is a dual core laptop (2 DUO CPU), this has to do with question 3.

3: If my laptop is a dual core one, why does memtest show: cores: 1 Active / 1 Total (Run: All)? shouldn't it indicate 2 total? and if it is running All, well, memtest is only detecting one core out of two, and something is wrong with my laptop.

memtest
Martin Hope
salvia
Asked: 2016-06-02 12:26:57 +0800 CST
  • 0

This is from How can I set mac address using the command line in Ubuntu 16.04? , where I cannot contact the_velour_fog

I have this same problem but im stuck with the solution adonis proposed:

nmcli connection modify --temporary 802-11-wireless.cloned-mac-address 00:60:1B:EB:F8:73

Is this a command? What do I write instead of connection_name? I don't know where to find it.

nmcli connection up

If this is a whole command, do I && between them?

networking