I updated the driver on my laptop that has A4 Quad core processor running on Ubuntu 12.04 lts. Previous to the update I was able to create Android Virtual device with emulation option set to host GPU. That worked perfectly but the device took about 2 minutes to boot up. Since the update I am unable to use the host GPU option which causes the AVD crash and logs me out of Ubuntu. I can boot the AVD now without the host GPU option, but it takes well over 30 minutes for device to power up.
What are my options. I am a newbie to Linux and I am not sure how to roll back the driver update. Please help. Thanks