Lubuntu drop coection

HI, I've a not ordinal set up at home I'm gon a try to explain it as quick possible, my desktop wich runs arch is coected to a laptop ruing lubuntu via etheet, and laptop coected wifi to my router with a shared coection, the thing is I can coect my desktop to Inteet but like every 5 to 10 min my I stop getting coection even tho my computer keeps getting ping and show as coected, I just discoect and coect again and it works again.