Comment 111 for bug 931967

I am seeing the same things as reported above, and I am seeing this in 14.04 LTS. I switched to fglrx to try to get rid of the corruption and still saw it, although it was less than while using the Open Source drivers for AMD/ATi. Tearfree created other problems so I went back to Open Source. Now the video corruption is back again, and sometimes it includes bits of desktop from a previous session even after a reboot.

I even tried switching to another ppa to get the latest and greatest versions from git and still see the corruption while waiting for the greeter to be ready for logon, and between greeter screen and logon to desktop, as well as when I log off and wait for the greeter to return to ready.

ASUS/ATi Radeon HD 5750, dual head with a pair of Dell S2440L LCD monitors. Ubuntu 14.04.2 LTS.

Wanted to try the above workaround but this system does not use GDM, so no directory or files on which to do the same edits.

$ lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:printing-4.1-amd64:printing-4.1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty

$ apt-show-versions unity-greeter
unity-greeter:amd64/trusty-updates 14.04.11-0ubuntu1 uptodate