https://bugs.freedesktop.org/show_bug.cgi?id=40495
--- Comment #6 from Jean-François Fortin Tam nekohayo@gmail.com 2011-08-31 11:26:16 PDT --- Created an attachment (id=50758) --> (https://bugs.freedesktop.org/attachment.cgi?id=50758) files requested in bug 39714 comment 4
/sys/kernel/debug/dri/0/radeon_*_mm /proc/mtrr
But not /sys/kernel/debug/x86/pat_memtype_list, as the file was not present.
I have some doubts that maybe this might be unrelated to suspend/resume, but instead related to the amount of windows open and/or general bugs/corruption... I've noticed that after a short while (maybe after opening a couple of browser windows), not only does performance decrease a lot, but there are weird visual glitches: font glyphs missing, colors changing in Getting Things GNOME, text shadows or colors in various apps (gedit, browser windows) going black, scrollbars going black, etc.