Some users are reporting that when using the 01.org backports on Ubuntu 14.04 and Fedora 20: https://01.org/linuxgraphics/node/442 We didn't see this behaviour in our testing, and apparently only some users are seeing it. The list of packages which u14.04 upgrade list is: i965-va-driver intel-gpu-tools libdrm-intel1 libdrm-nouveau2 libdrm-radeon1 libdrm2 libegl1-mesa libegl1-mesa-drivers libgbm1 libgl1-mesa-dri libgl1-mesa-glx libglapi-mesa libgles1-mesa libgles2-mesa libopenvg1-mesa libosmesa6 libva-drm1 libva-egl1 libva-glx1 libva-tpi1 libva-wayland1 libva-x11-1 libva1 libwayland-egl1-mesa libxatracker2 va-driver-all vainfo xserver-xorg-video-intel And the f20 upgrade list is: drm-utils intel-gpu-tools libdrm libva libva-intel-driver libva-utils mesa-dri-drivers mesa-filesystem mesa-libEGL mesa-libGL mesa-libGLES mesa-libOSMesa mesa-libgbm mesa-libglapi mesa-libwayland-egl mesa-libxatracker xorg-x11-drv-intel xorg-x11-drv-vmware xorg-x11-server-Xorg xorg-x11-server-common Which leads me to believe there's a problem in xserver-xorg-video-intel/xorg-x11-drv-intel as that looks like the likely common component in both.
You need upstream kernel and ddx as both contain fixes for the issue.
(In reply to Chris Wilson from comment #1) Do you happen to know when the fixes went in, roughly?
3.15-3.16 had some bugs with not updating the cursor size correctly, iirc. And in the ddx, the last arbitrary cursor size bug was fixed in 2.99.915.
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