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[Launchpad Bug Tracker <1361209@xxxxxxxxxxxxxxxxxx>]

[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]

** Changed in: xorg (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1361209

Title:
  Hybrid Graphics, overheating with fans running constantly

Status in xorg package in Ubuntu:
  Expired

Bug description:
  I have a Dell Inspiron 3521 with AMD/Intel hybrid graphics.
  OS - Ubuntu 14.04.1 (Linux kernel 3.13.0)

  00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
  01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] (rev ff)

  sudo cat /sys/kernel/debug/vgaswitcheroo/switch
  0:IGD:+:Pwr:0000:00:02.0
  1:DIS: :DynOff:0000:01:00.0

  Fan runs constantly, and battery backup is maximum 2 hours or even
  less sometimes using the open-source drivers.

  I have posted a similar info for xserver-xorg-video-ati because I found a bug report #1304912.
  But recently I installed fglrx drivers to see if I get better results and changed the driver in use to Intel from the Catalyst-Control-Center.
  The observation I made was that the problem persisted even when only the intel drivers were in use.
  So there could be problem with xserver-xorg-video-intel as the discrete graphics card is shown to be dynamically off.

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