I've been running up and down the Networks posts, but couldn't find what I'm looking for.
After starting my device, wired and wireless connection look great.
Wired connection disconnects after a few minutes and when I remove and attach the cable, all works fine for some time.
Wireless looks good until I open my browser or any other connection needing program. It disconnects and I can't connect until I reboot.
I want to solve this. I know I can, but I need some help with it

I've had the disconnects with wireless.. But the resolution depends on your hardware...
Post the output of
It will display hardware specs...
Welcome aboard
This is what I got
result attached
I hope to solve this problem someday. Any suggestions?
Code:
System: Host: csnlinux Kernel: 4.4.0-112-generic i686 (32 bit gcc: 5.4.0)
Desktop: Xfce 4.12.3 (Gtk 2.24.28) Distro: Ubuntu 16.04 xenial
Machine: System: Packard Bell BV product: EasyNote MZ35 v: PB77Q09586
Mobo: Packard Bell BV model: EasyNote MZ35 v: ��������������������������������
Bios: Packard Bell v: V0.20 date: 02/06/2007
CPU: Single core Intel Celeron M 430 (-UP-) cache: 1024 KB
flags: (nx pae sse sse2 sse3) bmips: 3466 speed: 1733 MHz (max)
Graphics: Card: Advanced Micro Devices [AMD/ATI] RC410M [Mobility Radeon Xpress 200M]
bus-ID: 01:05.0
Display Server: X.Org 1.18.4 drivers: ati,radeon (unloaded: fbdev,vesa)
Resolution: [email protected]
GLX Renderer: ATI RC410
GLX Version: 2.1 Mesa 17.2.4 Direct Rendering: Yes
Audio: Card Advanced Micro Devices [AMD/ATI] IXP SB4x0 High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:14.2
Sound: Advanced Linux Sound Architecture v: k4.4.0-112-generic
Network: Card-1: Realtek RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
driver: 8139too v: 0.9.28 port: a000 bus-ID: 09:02.0
IF: enp9s2 state: up speed: 100 Mbps duplex: full mac: <filter>
Card-2: Ralink RT2561/RT61 rev B 802.11g
driver: rt61pci v: 2.3.0 bus-ID: 09:04.0
IF: wlp9s4 state: down mac: <filter>
Drives: HDD Total Size: 120.0GB (4.9% used)
ID-1: /dev/sda model: ST9120822AS size: 120.0GB
Partition: ID-1: / size: 110G used: 4.7G (5%) fs: ext4 dev: /dev/sda1
ID-2: swap-1 size: 0.94GB used: 0.30GB (33%) fs: swap dev: /dev/sda5
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 58.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 167 Uptime: 8:30 Memory: 582.8/870.6MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (bash 4.3.481) inxi: 2.2.35
Nothing wrong there. I had similar problems using Network Manager on a Emachine 3507 on my motorcycle shop wireless desktop computer.
Installing WICD. Disabling Network Manager startup in XFCE. Fixed that problem for me. Not sure why.
https://blogs.gnome.org/dcbw/2016/05/16/...ifi-scans/
https://wiki.archlinux.org/index.php/Net....28WiFi.29