https://bugzilla.kernel.org/show_bug.cgi?id=71051
--- Comment #12 from Michel Dänzer michel@daenzer.net --- (In reply to Hin-Tak Leung from comment #11)
photo of the double-pointer corruption
Looks like you're using an old version of xf86-video-modesetting, or another generic driver which doesn't correctly handle 128x128 hardware cursors. Please use the radeon driver from a current version of xf86-video-ati; with glamor enabled, that also provides X-Video support.