Comment 0 for bug 1363384

Hi,

after upgrade to utopic, regular freezes for some seconds to some minutes appeared. Using custom kernel compiled from provided source of 3.16.0-11.16 with CONFIG_DMA_CMA=n solves the problem.

Linux freezes with up-to-date linux-image from repository (version 3.16.0-11.16). It doesn't matter, whether I use radeon or vesa driver.

Discussion about the bug in either X or kernel happened on
http://lists.freedesktop.org/archives/dri-devel/2014-August/065842.html