Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

After installing the ATI Radeon legacy drivers (version 13.1) Unity no longer starts in 3D mode, where it did before. I can select "Ubuntu" during login, and indeed it is the default choice, but when I do login Unity loads 2D mode instead of 3D mode. I cannot get Unity to start in 3D at all, even after running unity --reset.

The output of lscpi | grep VGA is as follows:

01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS880M     [Mobility Radeon HD 4225/4250]

I tried some of the solutions in the post Damien mentioned below, including reverting back to open source drivers. No luck, as

/usr/lib/nux/unity_support_test -p 

returns "Not software rendered" as "no". But unity 3d had always worked until just the other day. So how do I get it to software render?

share|improve this question
    
possible duplicate askubuntu.com/q/134097/71679 –  damien Jan 27 at 6:35
    
I tried some of the solutions in that post, including reverting back to open source drivers. No luck /usr/lib/nux/unity_support_test -p returns "Not software rendered" as "no". But unity 3d had always worked until just the other day. Odd. –  Brody Albers Jan 27 at 19:54

1 Answer 1

up vote -1 down vote accepted

GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub was set to "nomodeset". I changed it to "quiet splash", which is the default. Then I ran sudo update-grub and rebooted.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.