Comment # 2 on bug 1181327 from J���rgen Gro���

I'd say this is modesetting, according to X.log:

[    29.717] (II) LoadModule: "intel"
[    29.717] (WW) Warning, couldn't open module intel
[    29.717] (EE) Failed to load module "intel" (module does not exist, 0)
[    29.717] (II) LoadModule: "modesetting"
[    29.717] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so
[    29.717] (II) Module modesetting: vendor="X.Org Foundation"
[    29.717]    compiled for 1.20.3, module version = 1.20.3
[    29.717]    Module class: X.Org Video Driver
[    29.717]    ABI class: X.Org Video Driver, version 24.0