Belkin usb wireless (Bus 005 Device 002: ID 050d:705c Belkin Components F5D7050 Wireless G Adapter v4000 [Zydas ZD1211B]) worked on Ubuntu 14.04 LTS, quit with 15.04 update

Motherboard is MSI quad with 8 gig mem, solid state 280 gig hard drive AMD 64 bit.

Did you upgrade to 14.10 and then to 15.04? Did you wipe 14.04 off and do a clean install of 15.04 from CD / USB ?
Did 14.04 work in general? any issues?
What is the output of:

sudo lshw -C network; lsb_release -a; uname -a; lsusb

Thanks

Loaded MSI AMD Motherboard Drivers for MS-786 Board.under windows 8.1 Fresh disk install of 14.04 not partitioned. updated to 15.04

dale@dale-MS-7865:~$ sudo lshw -C network; lsb_release -a; uname -a; lsusb
[sudo] password for dale:
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 0c
       serial: d8:cb:8a:4f:95:3d
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.1.104 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:32 ioport:e000(size=256) memory:fea00000-fea00fff memory:d0800000-d0803fff
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux dale-MS-7865 3.19.0-25-generic #26-Ubuntu SMP Fri Jul 24 21:17:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 248a:8564
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dale@dale-MS-7865:~$

Computer was dual boot windows 8.1 and Ubuntu 14.04 Wireless working . Clean load from disk of 14.10 to get rid of windows.

Your upgrade route is still not clear.

Did you perform upgrade route A or B?

Upgrade route A is from 14.04 LTS to 14.10 to 15.04 -> this is allowed and supported.

Upgrade route B is from 14.04 LTS directly to 15.04 -> this is NOT allowed and NOT supported by the community!

More info here: https://help.ubuntu.com/community/VividUpgrades

Your lsusb output does not show any wireless adapters on your system. No wireless USB adapters found.

Are you sure you connected the Belkin wireless USB adapter to your PC BEFORE running the Terminal commands??

Also, why upgrade if everything worked in Ubuntu 14.04 LTS?

Ubuntu 14.04 LTS is supported for a much longer period of time than Ubuntu 15.04....

History of why. I built my main box in 1998 and ran Windows 98. One of the refurbishes was Gigabyte mother board with Intel chips and Ubuntu 9.04 I burn the images to disks and install from them. Now running 14.04 with updates.

A friend of mine who I taught to use CP/M decided I need to learn Windows 8.1 so he built one for me.
Put it in Guest Bedroom and ran wireless. Decided to try 14.04 on CD. Good. Dual booted. Month later 8.1 crashed error message missing files. 8.1 stores product code in the BIOS. Did low level format, cleared the BIOS, ran MSI setup disk installing drivers. Experience says this will happen again. MSI 7865 mother board is AMD 64 bit. Found that 14.10 was AMD 64 bit desktop image. Burned and installed, said upgrade 15,04 and found no wireless. Blue Ethernet cable going down hall to office does not produce happy wife.

Installed the missing LSB and am looking at green led on Belkin FSD 7050 v 4 wireless USB adapter with MAC address 001CDFDFEAA3

This is the current terminal output . lsusb output does not show any wireless USB adapters so what am I doing wrong or missing.

 dale@dale-MS-7865:~$ sudo lshw -C network; lsb_release -a; uname -a; lsusb
[sudo] password for dale:
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 0c
       serial: d8:cb:8a:4f:95:3d
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.1.104 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
       resources: irq:32 ioport:e000(size=256) memory:fea00000-fea00fff memory:d0800000-d0803fff
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux dale-MS-7865 3.19.0-25-generic #26-Ubuntu SMP Fri Jul 24 21:17:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 248a:8564
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dale@dale-MS-7865:~$

Try connecting the wireless USB adapter to each USB port you have and then rerun the lsusb command each time.

Either the USB port is broken, or your wireless USB adapter is broken.

There should have been output about your wireless USB adapter by now.....

Thanks. Moved from USB2 to USB3 and now connected. Here is new output. Again THANK YOU

dale@dale-MS-7865:~$ sudo lshw -C network; lsb_release -a; uname -a; lsusb
[sudo] password for dale:
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: 0c
       serial: d8:cb:8a:4f:95:3d
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:32 ioport:e000(size=256) memory:fea00000-fea00fff memory:d0800000-d0803fff
  *-usb
       description: Wireless interface
       product: USB2.0 WLAN
       vendor: Belkin
       physical id: 2
       bus info: usb@5:2
       logical name: wlan0
       version: 48.10
       serial: 00:1c:df:df:ea:a3
       capabilities: usb-2.00 ethernet physical wireless
       configuration: broadcast=yes driver=zd1211rw driverversion=3.19.0-25-generic firmware=4725 ip=192.168.1.108 link=yes maxpower=500mA multicast=yes speed=12Mbit/s wireless=IEEE 802.11bg
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 15.04
Release: 15.04
Codename: vivid
Linux dale-MS-7865 3.19.0-25-generic #26-Ubuntu SMP Fri Jul 24 21:17:31 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 248a:8564
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 050d:705c Belkin Components F5D7050 Wireless G Adapter v4000 [Zydas ZD1211B]
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
dale@dale-MS-7865:~$

I suggest blocking off the defective USB port with a piece of red tape to avoid problems in the future...