An X-server built from git head with glamor enabled segfaults with 346.22 on startup.
Omitting glamor support gets it going.
[ 4.100] (--) PCI:*(0:0:2:0) 8086:0416:1028:05cd rev 6, Mem @ 0xf5400000/4194304, 0xd0000000/268435456, I/O @ 0x0000f000/64
[ 4.100] (--) PCI: (0:1:0:0) 10de:11b8:1028:15cd rev 161, Mem @ 0xf4000000/16777216, 0xe0000000/268435456, 0xf0000000/33554432, I/O @ 0x0000e000/128, BIOS @ 0x????????/524288
[ 4.180] (II) NVIDIA GLX Module 346.22 Tue Dec 2 10:20:26 PST 2014
[ 4.180] (II) LoadModule: "nvidia"
[ 4.180] (II) Loading /usr/lib64/xorg/modules/drivers/nvidia_drv.so
[ 4.186] (II) Module nvidia: vendor="NVIDIA Corporation"
[ 4.186] compiled for 4.0.2, module version = 1.0.0
[ 4.186] Module class: X.Org Video Driver
[ 4.186] (II) LoadModule: "modesetting"
[ 4.186] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so
[ 4.187] (II) Module modesetting: vendor="X.Org Foundation"
[ 4.187] (II) NVIDIA dlloader X Driver 346.22 Tue Dec 2 09:58:48 PST 2014
[ 4.187] (II) NVIDIA Unified Driver for all Supported NVIDIA GPUs
[ 4.187] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 4.187] (++) using VT number 7
[ 4.193] (II) modeset(1): using drv /dev/dri/card0
[ 4.193] (II) modeset(G0): using drv /dev/dri/card0
[ 4.193] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[ 4.193] (==) NVIDIA(0): RGB weight 888
[ 4.193] (==) NVIDIA(0): Default visual is TrueColor
[ 4.193] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[ 4.194] (**) NVIDIA(0): Enabling 2D acceleration
[ 4.731] (II) NVIDIA(GPU-0): Found DRM driver nvidia-drm (20130102)
[ 4.732] (II) NVIDIA(0): NVIDIA GPU Quadro K5100M (GK104GL) at PCI:1:0:0 (GPU-0)
[ 4.732] (--) NVIDIA(0): Memory: 8388608 kBytes
....
[ 4.738] (==) modeset(G0): Depth 24, (==) framebuffer bpp 32
[ 4.739] (==) modeset(G0): RGB weight 888
[ 4.739] (==) modeset(G0): Default visual is TrueColor
[ 4.739] (II) Loading sub module "glamoregl"
[ 4.739] (II) LoadModule: "glamoregl"
[ 4.739] (II) Loading /usr/lib64/xorg/modules/libglamoregl.so
[ 4.748] (II) Module glamoregl: vendor="X.Org Foundation"
[ 4.748] compiled for 1.16.99.901, module version = 1.0.0
[ 4.748] ABI class: X.Org ANSI C Emulation, version 0.4
[ 4.748] (II) glamor: OpenGL accelerated X.org driver based.
[ 4.835] (EE)
[ 4.835] (EE) Backtrace:
[ 4.836] (EE) 0: /usr/bin/X (OsLookupColor+0x119) [0x5d8829]
[ 4.836] (EE) 1: /lib64/libc.so.6 (killpg+0x40) [0x7fb3aa82672f]
[ 4.836] (EE) 2: /usr/lib64/libX11.so.6 (_XSend+0x1c) [0x7fb39b93cc5c]
[ 4.836] (EE) 3: /usr/lib64/libX11.so.6 (_XFlush+0x24) [0x7fb39b93d374]
[ 4.836] (EE) 4: /usr/lib64/libX11.so.6 (_XGetRequest+0x55) [0x7fb39b940645]
[ 4.836] (EE) 5: /usr/lib64/libX11.so.6 (XQueryExtension+0x3d) [0x7fb39b9326dd]
[ 4.836] (EE) 6: /usr/lib64/libX11.so.6 (XInitExtension+0x22) [0x7fb39b924c52]
[ 4.837] (EE) 7: /usr/lib64/libXext.so.6 (XextAddDisplay+0x4f) [0x7fb39b6f235f]
[ 4.837] (EE) 8: /usr/lib64/libnvidia-glsi.so.346.22 (_nv016glsi+0x5f367) [0x7fb39bd0b287]
[ 4.837] (EE) 9: /usr/lib64/libnvidia-glsi.so.346.22 (_nv016glsi+0x814) [0x7fb39bc4dbe4]
[ 4.837] (EE) unw_get_proc_name failed: no unwind info found [-10]
[ 4.837] (EE) 10: /usr/lib64/libEGL.so.1 (?+0x814) [0x7fb39bef6f04]
[ 4.837] (EE) unw_get_proc_name failed: no unwind info found [-10]
[ 4.837] (EE) 11: /usr/lib64/libEGL.so.1 (?+0x814) [0x7fb39bef7934]
[ 4.837] (EE) 12: /usr/lib64/libEGL.so.1 (NvEglRegClientApi+0x4f36) [0x7fb39bf04866]
[ 4.837] (EE) 13: /usr/lib64/xorg/modules/libglamoregl.so (glamor_egl_init+0x8b) [0x7fb3a4469d2b]
[ 4.837] (EE) 14: /usr/lib64/xorg/modules/drivers/modesetting_drv.so (_init+0x3cbc) [0x7fb3a4b0f76c]
[ 4.837] (EE) 15: /usr/bin/X (InitOutput+0xc5e) [0x48f4de]
[ 4.837] (EE) 16: /usr/bin/X (remove_fs_handlers+0x214) [0x43efc4]
[ 4.837] (EE) 17: /lib64/libc.so.6 (__libc_start_main+0xf0) [0x7fb3aa813780]
[ 4.837] (EE) 18: /usr/bin/X (_start+0x29) [0x426e89]
[ 4.838] (EE) 19: ? (?+0x29) [0x29]
[ 4.838] (EE)
[ 4.838] (EE) Segmentation fault at address 0x0
[ 4.838] (EE)
Fatal server error:
[ 4.838] (EE) Caught signal 11 (Segmentation fault). Server aborting
I’m using a system set up as outlined in Chapter 32 of the nvidia driver readme.