The problem is related with the open source driver ati. I activated 'fglrx' through jockey-text and I can work normally.
I use:
$ lspci ... 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] ...
The problem is related with the open source driver ati. I activated 'fglrx' through jockey-text and I can work normally.
I use:
$ lspci
...
01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics]
...