As per Ubuntu, HP Pavilion dv6 is Ubuntu certified hardware.

Check out the list of HP hardware being certified here.

DV6 is certified by Ubuntu for

• Processor: Intel Corporation Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz


• LAN: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express
  Gigabit Ethernet Controller



• Chipset:

  
  
  
  
  

  • Intel Corporation 7 Series/C210 Series Chipset Family PCI
    Express Root Port 1

  
  

  • Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4

  
  
  • Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6
  
  


• GFX dedicated: nVidia Corporation GF108M [GeForce GT 630M]


• GFX integrated: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller

So most of the stuff should run out of the box for you. However as @Rinzwind has mentioned, please try using a live CD/USB before installing it on the laptop.

Ubuntu recommends Ubuntu 12.04.2 LTS 64-bit as recommended version. Keep in mind the certification notes

Slow resume from suspend
This system does not not meet our performance criteria for resuming from suspend, but suspend/resume is functional and other
functionality is not affected.

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It seems the Proprietary drivers create problem, so please do the following as mentioned in the thread here.

1. Install firmware-b43-installer (+ b43fwcutter automatically added)


2. Uninstall the bcm-kernel-source package


3. Remove the original Wireless STA driver from Additional Drivers


4. Reboot

Hope this solves his issues