There are changes in the 3.13 kernel that make Radeon HD 7xxx hardware faster and more stable. Ubuntu 14.04 "Trusty Tahr" currently has the 3.13.0-24.46 kernel. Are you able to test it?
Also, the upstream 3.14 kernel has this commit (which has also been ccd to the stable kernel series) which eliminates the display corruption some people have had with recent kernels: author Alex Deucher committer Alex Deucher commit 6d8ea7de3f5035610f3bfacbe35e7b71ad1e4663 tree 215fe5cacbd723866e8515ae41734d56dc547bd6 parent 78b035101999d8d071781778c019c387dc8bebb2 drm/radeon: fix display tiling setup on SI Apply the same logic as CI to SI for setting up the display tiling parameters. The num banks may vary per tiling index just like CI. Bugs: https://bugs.freedesktop.org/show_bug.cgi?id=71488 https://bugs.freedesktop.org/show_bug.cgi?id=73946 https://bugs.freedesktop.org/show_bug.cgi?id=74927 Signed-off-by: Alex Deucher Cc: stable A PPA of the 3.14.1 kernel is available at http://kernel.ubuntu.com /~kernel-ppa/mainline/ and instructions on how to install and uninstall it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds Also the upstream 3.15-rc2 kernel will add support for newer memory controller microcode on your Cape Verde XT GPU, which "May fix stability issues". ** Bug watch added: freedesktop.org Bugzilla #71488 https://bugs.freedesktop.org/show_bug.cgi?id=71488 ** Bug watch added: freedesktop.org Bugzilla #73946 https://bugs.freedesktop.org/show_bug.cgi?id=73946 ** Bug watch added: freedesktop.org Bugzilla #74927 https://bugs.freedesktop.org/show_bug.cgi?id=74927 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1286313 Title: Garbled Text To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1286313/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
