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mine is a HP pavillion Dv6-6015tx laptop. I dual boot windows 7 and ubuntu 13.04. One glaring problem i have found with ubuntu 13.04 is that it gives me a battery backup of less than an hour. Although, on Windows i get a minimum of 100 minutes backup. Someone please help me out with this problem. I love ubuntu otherwise. Thank You.

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    Install AMD Radeon HD 6490M Drivers – Qasim May 8 '13 at 11:18
  • @Qasim Post an answer with instructions of how to do that. – stommestack Jun 3 '13 at 16:08
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Well ,I guess it has to be the switchable graphics thingy.

This should help:

  1. Open any terminal.
  2. Type in:

    sudo nano /etc/rc.local
    

    and then enter your password.

  3. Then, just before exit 0, type these two lines:

    chown -R $USER:$USER /sys/kernel/debug
    echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
    
  4. Save (Ctrl+O) and quit (Ctrl+X)
  5. Reboot.

You should be fine after this.

  • Thank you for the answer sir. I will try this out and then get back to you. – liveProgramming May 9 '13 at 8:38
  • Just an update-- i tried installing the latest drivers from AMD but they didn't work and my system rolled back to the previous (battery hungry) configuration. – liveProgramming May 9 '13 at 9:48
  • Carried out these tasks, no benefit :( – liveProgramming May 9 '13 at 16:39

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