My laptop configuration are Dell 3521 Core i3 3227U @ 1.9Ghz 4GB RAM Intel HD4000 graphic + radeon HD7670m 1GB DDR3 dedicated graphics.
When I boot Ubuntu 14.04.02LTS on my laptop, CPU cooling fan starts to run continuously at max speed making a loud sound while the laptop is in idle state :( and also the air blown out side is not hot, just normal air. I Constantly updated my OS but nothing stops the fan running at max speed. So I thought that Open source driver is the problem so I tried fglrx proprietary driver through the additional hardware. But still the same problem exists. Then I moved to Ubuntu 14.10 and installed the available intel driver at 01.org, but still the problem is not solved. Then Today I installed Ubuntu 15.04 with fglrx proprietary driver, but still the problem is unsolved. Please guys tell me how to fix this as soon as possible. Thanks
Here it is
root@kasun-Inspiron-3521:/home/kasun# lspci -k | grep -EA2 'VGA|3D' 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) Subsystem: Dell Device 0598 Kernel driver in use: i915 -- 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7500M/7600M Series] (rev ff) 07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05) Subsystem: Dell Device 0598 root@kasun-Inspiron-3521:/home/kasun#