How to remove fglrx and replacing with AMD/ATI in Debian Jessie

"The fglrx driver is incompatible with the GNOME desktop released as part of Debian 8 "Jessie", as it does not support the EGL interface (release notes). It is recommended to use the free radeon driver instead."

After installing fglrx, I can not enter Gnome. I share how to remove fglrx driver and resintall AMD/ATI in Debian Jessie.

1. Remove all fglrx driver
   # apt-get remove fglrx-driver fglrx-atieventsd libfglrx
2. Add this repository into /etc/apt/sources.list
   deb http://httpredir.debian.org/debian/ jessie main contrib non-free
3. Install or reinstall firmware
   # apt-get install firmware-linux-free firmware-linux-nonfree
   # apt-get install --reinstall firmware-linux-free firmware-linux-nonfree 
4. Install or reinstall radeon driver (see https://wiki.debian.org/AtiHowTo for your system)
   # apt-get install xserver-xorg-video-radeon libdrm-radeon1 radeontool
   # apt-get install --reinstall xserver-xorg-video-radeon libdrm-radeon1 radeontool
5. Replace /etc/X11/xorg.conf with your working configuration. In my case /etc/X11/xorg.conf.original-0.
6. You can start your Gnome
   # startx

Woking at Asus K45DR

• A8-4500M 
• AMD Radeon® Mobility™ HD7640G + HD 7470M Dual Graphics with 1GB DDR3 VRAM

Reference:

• https://wiki.debian.org/AtiHowTo
• https://wiki.debian.org/ATIProprietary