wifi lost after update

[silverjock]

Complete novice and silver hair  so spoon feeding  only!  My  wife's  laptop  has  been  working  ok on  usb  wifi  till I  updated  today.  I  had  to  have  a  friend  install drivers  for  this usb  device  but  no  idea  how  he  did this.  After  update  no  wireless options  appear  to  click  on  (  I  assumed  this  would  be  automatic )  I  can  use  terminal  if  spoon  fed,  2  propriety  drivers  show  when  I  check  network  connections  from  menu.  how  do  I  get  back  on  line
thanks

[Valtam]

Can your friend not load the drivers for you again?

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[silverjock]

Thanks  for  reply  unfortunately  friend  was  just  visiting,  does  the  driver  have  to  be  loaded  again  and  if  so  how  is  this  done?
The  driver  folder  is  on  the  desktop  /  the  usb  shows  on  ls usb/  the  chip  is  rtl 8811cu / dkms is  installed.
Would
  sudo ./dkms -install.sh
sudo modprobe  8811cu
iw config
be  the  way  to  go?    Found  this  between  github  and  forum  search  but  unsure  if  this is  what  I  need
  Thanks

[Valtam]

What is the github link?

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[silverjock]

Hi  thanks  for  responce
  Is  this  what  you  need?            https://github.com/brektrou/rtl8821CU
 

[Valtam]

Make sure you are inside the driver folder, then open a Terminal and do:

Code:

sudo ./dkms-install.sh

follow whatever it says. You may or may not need to reboot after to get wifi.

[silverjock]

Thanks
    Further  problem  with  laptop now,  won't  boot,  stops at BusyBox  which is gobildygook  to  me,  so  may  be  a  while  till  I  can  try  your  fix.
  Thanks  anyway

[silverjock]

Managed to get boot up
tried  above  command in terminal  but  get
command not found
thanks

[Valtam]

Command not found means that you are not in the folder where the install file is. Have another look at my previous instructions and try again.

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[silverjock]

sorry for  my  lack of ability.  I  thought  i  was  in  folder,  When  I  click  on  folder  the  first  opens  as  driver (another  folder)  click  again  opens  with    a blanked  out  folder  symbol  and  rtl8821cu  wifi linux  etc  listed  acroos  the  top  further  click  and  a blank  page  appears.    If  I  right  click  on  the  page  with  rtl8821cu  etc  I  have  options  to open-  open in new  page-new widow-open  terminal-  or open  as  administrator  are  any  of  these  the  right  one?  or  is  the  file  required  somewhere  else  and  if  so  how  do  i  find  it  Thanks