maison@maison-X540SA:~$ cat /etc/apt/sources.list
# deb cdrom:[Xubuntu 16.04.1 LTS _Xenial Xerus_ - Release amd64 (20160719)]/ xenial main multiverse restricted universe

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial main restricted
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates main restricted
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial universe
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial universe
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates universe
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://fr.archive.ubuntu.com/ubuntu/ xenial multiverse
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial multiverse
deb http://fr.archive.ubuntu.com/ubuntu/ xenial-updates multiverse
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb-src http://fr.archive.ubuntu.com/ubuntu/ xenial-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu xenial partner
# deb-src http://archive.canonical.com/ubuntu xenial partner

deb http://security.ubuntu.com/ubuntu xenial-security main restricted
# deb-src http://security.ubuntu.com/ubuntu xenial-security main restricted
deb http://security.ubuntu.com/ubuntu xenial-security universe
# deb-src http://security.ubuntu.com/ubuntu xenial-security universe
deb http://security.ubuntu.com/ubuntu xenial-security multiverse
# deb-src http://security.ubuntu.com/ubuntu xenial-security multiverse
deb https://dl.winehq.org/wine-builds/ubuntu/ xenial main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ xenial main
maison@maison-X540SA:~$ ls /etc/apt/sources.list.d -1
danielrichter2007-ubuntu-grub-customizer-xenial.list
danielrichter2007-ubuntu-grub-customizer-xenial.list.save
dropbox.list.save
gambas-team-ubuntu-gambas3-xenial.list
gambas-team-ubuntu-gambas3-xenial.list.save
michael-gruz-ubuntu-canon-stable-xenial.list
michael-gruz-ubuntu-canon-stable-xenial.list.save
nilarimogard-ubuntu-webupd8-xenial.list
nilarimogard-ubuntu-webupd8-xenial.list.save
snwh-ubuntu-pulp-xenial.list
snwh-ubuntu-pulp-xenial.list.save
xubuntu-dev-ubuntu-extras-xenial.list
xubuntu-dev-ubuntu-extras-xenial.list.save
maison@maison-X540SA:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.04.3 LTS
Release:	16.04
Codename:	xenial
maison@maison-X540SA:~$ echo $XDG_CURRENT_DESKTOP
XFCE
maison@maison-X540SA:~$ ls -l /usr/share/xsessions
total 16
-rw-r--r-- 1 root root 5465 mai   26  2015 xfce.desktop
-rw-r--r-- 1 root root 5607 janv.  9  2016 xubuntu.desktop
maison@maison-X540SA:~$ sudo dmidecode -t 16
[sudo] Mot de passe de maison :
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.

Handle 0x000A, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 8 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

maison@maison-X540SA:~$ sudo dmidecode -t 17
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.

Handle 0x000C, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000A
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 4096 MB
	Form Factor: DIMM
	Set: None
	Locator: A1_DIMM0
	Bank Locator: A1_BANK0
	Type: DDR3
	Type Detail: Unknown
	Speed: 1600 MHz
	Manufacturer: Hynix Semiconduc
	Serial Number: 00000000
	Asset Tag: A1_AssetTagNum0
	Part Number: HMT451S6CFR6A-PB
	Rank: 2
	Configured Clock Speed: 1066 MHz
	Minimum Voltage: 1.35 V
	Maximum Voltage: 1.5 V
	Configured Voltage: 1.35 V

Handle 0x000E, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000A
	Error Information Handle: Not Provided
	Total Width: Unknown
	Data Width: 64 bits
	Size: No Module Installed
	Form Factor: DIMM
	Set: None
	Locator: A1_DIMM1
	Bank Locator: A1_BANK1
	Type: Unknown
	Type Detail: Unknown
	Speed: Unknown
	Manufacturer: A1_Manufacturer1
	Serial Number: A1_SerNum1
	Asset Tag: A1_AssetTagNum1
	Part Number: Array1_PartNumber1
	Rank: Unknown
	Configured Clock Speed: Unknown
	Minimum Voltage: Unknown
	Maximum Voltage: Unknown
	Configured Voltage: Unknown

maison@maison-X540SA:~$ grep SwapTotal /proc/meminfo
SwapTotal:       4217852 kB