I have a working 2D KDE desktop under Fedora 22 (clean install) with the nouveau drivers, but 3D things such as steam do not work. I uninstalled the nouveau driver and installed the nVidia drivers with dnf remove xorg-x11-drv-nouveau dnf install xorg-x11-drv-nvidia dnf install kmod-nvidia dnf upgrade On rebooting I get a black screen where the login (sddm) should be, and have to switch to a text mode console on Ctrl-Alt-F2 et. al. to get any further. The Xorg log contained the following error messages: [ 13.397] (II) Loading /usr/lib64/nvidia/xorg/libglx.so [ 13.475] (II) Module glx: vendor="NVIDIA Corporation" [ 13.475] compiled for 4.0.2, module version = 1.0.0 [ 13.475] Module class: X.Org Server Extension [ 13.476] (II) NVIDIA GLX Module 346.72 Tue May 5 17:11:15 PDT 2015 [ 13.476] (==) Matched nouveau as autoconfigured driver 0 [ 13.476] (==) Matched nv as autoconfigured driver 1 [ 13.476] (==) Matched modesetting as autoconfigured driver 2 [ 13.476] (==) Matched fbdev as autoconfigured driver 3 [ 13.476] (==) Matched vesa as autoconfigured driver 4 [ 13.476] (==) Assigned the driver to the xf86ConfigLayout [ 13.476] (II) LoadModule: "nouveau" [ 13.479] (WW) Warning, couldn't open module nouveau [ 13.479] (II) UnloadModule: "nouveau" [ 13.479] (II) Unloading nouveau [ 13.479] (EE) Failed to load module "nouveau" (module does not exist, 0) [ 13.479] (II) LoadModule: "nv" [ 13.479] (WW) Warning, couldn't open module nv [ 13.479] (II) UnloadModule: "nv" [ 13.479] (II) Unloading nv [ 13.479] (EE) Failed to load module "nv" (module does not exist, 0) [ 13.479] (II) LoadModule: "modesetting" [ 13.479] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so [ 13.480] (II) Module modesetting: vendor="X.Org Foundation" [ 13.480] compiled for 1.17.1, module version = 1.17.1 [ 13.480] Module class: X.Org Video Driver [ 13.480] ABI class: X.Org Video Driver, version 19.0 [ 13.480] (II) LoadModule: "fbdev" [ 13.480] (II) Loading /usr/lib64/xorg/modules/drivers/fbdev_drv.so [ 13.481] (II) Module fbdev: vendor="X.Org Foundation" [ 13.481] compiled for 1.17.1, module version = 0.4.3 [ 13.481] Module class: X.Org Video Driver [ 13.481] ABI class: X.Org Video Driver, version 19.0 [ 13.481] (II) LoadModule: "vesa" [ 13.481] (II) Loading /usr/lib64/xorg/modules/drivers/vesa_drv.so [ 13.481] (II) Module vesa: vendor="X.Org Foundation" [ 13.481] compiled for 1.17.1, module version = 2.3.2 [ 13.481] Module class: X.Org Video Driver [ 13.481] ABI class: X.Org Video Driver, version 19.0 [ 13.481] (II) modesetting: Driver for Modesetting Kernel Drivers: kms [ 13.481] (II) FBDEV: driver for framebuffer: fbdev [ 13.481] (II) VESA: driver for VESA chipsets: vesa [ 13.485] (EE) open /dev/dri/card0: No such file or directory [ 13.485] (WW) Falling back to old probe method for modesetting [ 13.485] (EE) open /dev/dri/card0: No such file or directory [ 13.485] (II) Loading sub module "fbdevhw" [ 13.485] (II) LoadModule: "fbdevhw" [ 13.485] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so [ 13.485] (II) Module fbdevhw: vendor="X.Org Foundation" [ 13.485] compiled for 1.17.1, module version = 0.0.2 [ 13.485] ABI class: X.Org Video Driver, version 19.0 [ 13.485] (EE) open /dev/fb0: No such file or directory [ 13.485] (WW) Falling back to old probe method for fbdev [ 13.485] (II) Loading sub module "fbdevhw" [ 13.485] (II) LoadModule: "fbdevhw" [ 13.485] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so [ 13.485] (II) Module fbdevhw: vendor="X.Org Foundation" So, why is Xorg still trying to load the nouveau driver? What configuration step have I missed to tell it otherwise? Any help would be greatly appreciated. Many thanks, Chris R. -- ********************************************************* David P. Both, RHCE Millennium Technology Consulting LLC Raleigh, NC, USA 919-389-8678 dboth(a)millennium-technology.com www.millennium-technology.com www.databook.bz - Home of the DataBook for Linux DataBook is a Registered Trademark of David Both ********************************************************* This communication may be unlawfully collected and stored by the National Security Agency (NSA) in secret. The parties to this email do not consent to the retrieving or storing of this communication and any related metadata, as well as printing, copying, re-transmitting, disseminating, or otherwise using it. If you believe you have received this communication in error, please delete it immediately.

Running F22/KDE with GeForce GTX 660 and the nVidia drivers from RPMfusion (akmod) just fine.

On Mon, Jul 06, 2015 at 10:05:51AM +0100, Christopher Ross wrote: > > [ 13.476] (==) Matched nouveau as autoconfigured driver 0 > [ 13.476] (==) Matched nv as autoconfigured driver 1 > [ 13.476] (==) Matched modesetting as autoconfigured driver 2 > [ 13.476] (==) Matched fbdev as autoconfigured driver 3 > [ 13.476] (==) Matched vesa as autoconfigured driver 4 I think this bit illustrates the problem. The nvidia drivers are not recognised at all. Of course loading fails later on. I do not know how it is supposed to look though, I don't have any nvidia cards. I would guess something went wrong installing kmod-nvidia. Maybe look at the transaction log with dnf history.