https://bugs.freedesktop.org/show_bug.cgi?id=55692
--- Comment #31 from Serkan Hosca serkan@hosca.com --- (In reply to comment #29)
I haven't had time to dig it, but just to let you know I'm pretty much in the same situation as Serkan with a very similar config. I don't think it has to do with something using too much memory, but more about not releasing/attributing it correctly in the first place. Otherwise, why would it work with kernel 3.6 and not 3.7 if only kernel version is in the balance?
I should have time to look at it tonight.
I think the gart memory issue is because of my recent update to gnome 3.6, i didn't see that with gdm 3.4. The machine also boots very fast now after the systemd upgrade, from grub to gdm i would say its about 5~7 seconds. Also when grub starts, the screen stays at console login prompt with the mouse cursor available and it takes about 2~3 seconds till gdm starts doing its fading thing to login prompt.
I will try to revert it back and test it again when i get home.