drm object :radeon continuously shows the errors in IBM Lenovo with AMD processor BOSS 4.1

ISSUE :

In IBM Lenovo with AMD processor BOSS 4.1 was successfully installed .but the GUI based login window is not shown but the terminal login only allowed.

before it throws

drm object :radeon continuously shows the errors and leads to terminal login.

Solution:

1.Edit the /boot/grub/grub.cfg Comment the Kernel 2.6.39  using #

2. Edit the following line in the grub menu

linux /boot/vmlinuz-2.6.32-5-686 root=UUID=bd7740e5-2080-4db2-8e97-d36a26d55110 ro  splash vga=791 quiet

to following

linux /boot/vmlinuz-2.6.32-5-686 root=UUID=bd7740e5-2080-4db2-8e97-d36a26d55110 ro quiet

3. Go to the /etc/modprobe.d/radeon-kms.conf and edit the following line

options radeon modeset=1

to following

options radeon modeset=0

4.Then restart the system

5.GUI based login window is opened successfully