Gdm crash: bumblebee graphics or pm-powersave problem

Question

I updated my system this morning, and gdm hangs on startup now.
Looking in my logs, I see messages related to either intel graphics, or pm-powersave. I'm not sure what the problem is, any help would be appreciated!
I have a laptop with optimus, with nvidia/intel. As of this update bumblebee is in the official repositories, so I removed the AUR versions I had, and installed
$sudo pacman -S intel-dri xf86-video-intel bumblebee nvidia
I can run startx, and as seen in the X log, the intel driver seems to load.
Here are the relevant logs. The errors are at the bottom of each log, and I clipped some of  them to start at the moment I run 'systemctl start gdm':
Xorg.0.log
[ 38.373]
X.Org X Server 1.14.1
Release Date: 2013-04-17
[ 38.374] X Protocol Version 11, Revision 0
[ 38.374] Build Operating System: Linux 3.8.7-1-ARCH x86_64
[ 38.374] Current Operating System: Linux chrysomele 3.8.8-1-ARCH #1 SMP PREEMPT Wed Apr 17 10:57:28 CEST 2013 x86_64
[ 38.374] Kernel command line: root=/dev/sda3 ro
[ 38.374] Build Date: 17 April 2013 02:37:06PM
[ 38.374]
[ 38.374] Current version of pixman: 0.28.2
[ 38.374] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 38.374] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 38.374] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Apr 23 14:17:27 2013
[ 38.378] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 38.378] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 38.382] (==) No Layout section. Using the first Screen section.
[ 38.382] (==) No screen section available. Using defaults.
[ 38.382] (**) |-->Screen "Default Screen Section" (0)
[ 38.382] (**) | |-->Monitor "<default monitor>"
[ 38.382] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 38.382] (==) Automatically adding devices
[ 38.383] (==) Automatically enabling devices
[ 38.383] (==) Automatically adding GPU devices
[ 38.397] (==) FontPath set to:
/usr/share/fonts/misc/,
/usr/share/fonts/TTF/,
/usr/share/fonts/OTF/,
/usr/share/fonts/Type1/,
/usr/share/fonts/100dpi/,
/usr/share/fonts/75dpi/
[ 38.397] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 38.397] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 38.397] (II) Loader magic: 0x7fcc20
[ 38.397] (II) Module ABI versions:
[ 38.397] X.Org ANSI C Emulation: 0.4
[ 38.397] X.Org Video Driver: 14.1
[ 38.397] X.Org XInput driver : 19.1
[ 38.397] X.Org Server Extension : 7.0
[ 38.397] (II) config/udev: Adding drm device (/dev/dri/card0)
[ 38.399] (--) PCI:*(0:0:2:0) 8086:0126:17aa:21d1 rev 9, Mem @ 0xf1400000/4194304, 0xe0000000/268435456, I/O @ 0x00006000/64
[ 38.399] Initializing built-in extension Generic Event Extension
[ 38.399] Initializing built-in extension SHAPE
[ 38.399] Initializing built-in extension MIT-SHM
[ 38.399] Initializing built-in extension XInputExtension
[ 38.399] Initializing built-in extension XTEST
[ 38.399] Initializing built-in extension BIG-REQUESTS
[ 38.399] Initializing built-in extension SYNC
[ 38.399] Initializing built-in extension XKEYBOARD
[ 38.399] Initializing built-in extension XC-MISC
[ 38.399] Initializing built-in extension SECURITY
[ 38.399] Initializing built-in extension XINERAMA
[ 38.399] Initializing built-in extension XFIXES
[ 38.399] Initializing built-in extension RENDER
[ 38.399] Initializing built-in extension RANDR
[ 38.399] Initializing built-in extension COMPOSITE
[ 38.399] Initializing built-in extension DAMAGE
[ 38.399] Initializing built-in extension MIT-SCREEN-SAVER
[ 38.399] Initializing built-in extension DOUBLE-BUFFER
[ 38.399] Initializing built-in extension RECORD
[ 38.399] Initializing built-in extension DPMS
[ 38.399] Initializing built-in extension X-Resource
[ 38.399] Initializing built-in extension XVideo
[ 38.399] Initializing built-in extension XVideo-MotionCompensation
[ 38.399] Initializing built-in extension XFree86-VidModeExtension
[ 38.399] Initializing built-in extension XFree86-DGA
[ 38.399] Initializing built-in extension XFree86-DRI
[ 38.399] Initializing built-in extension DRI2
[ 38.399] (II) "glx" will be loaded by default.
[ 38.399] (II) LoadModule: "dri2"
[ 38.399] (II) Module "dri2" already built-in
[ 38.399] (II) LoadModule: "glamoregl"
[ 38.403] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 38.427] (II) Module glamoregl: vendor="X.Org Foundation"
[ 38.427] compiled for 1.14.0, module version = 0.5.0
[ 38.427] ABI class: X.Org ANSI C Emulation, version 0.4
[ 38.427] (II) LoadModule: "glx"
[ 38.428] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 38.431] (II) Module glx: vendor="X.Org Foundation"
[ 38.431] compiled for 1.14.1, module version = 1.0.0
[ 38.431] ABI class: X.Org Server Extension, version 7.0
[ 38.431] (==) AIGLX enabled
[ 38.432] Loading extension GLX
[ 38.432] (==) Matched intel as autoconfigured driver 0
[ 38.432] (==) Matched intel as autoconfigured driver 1
[ 38.432] (==) Matched vesa as autoconfigured driver 2
[ 38.432] (==) Matched modesetting as autoconfigured driver 3
[ 38.432] (==) Matched fbdev as autoconfigured driver 4
[ 38.432] (==) Assigned the driver to the xf86ConfigLayout
[ 38.432] (II) LoadModule: "intel"
[ 38.432] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[ 38.438] (II) Module intel: vendor="X.Org Foundation"
[ 38.438] compiled for 1.14.0, module version = 2.21.6
[ 38.438] Module class: X.Org Video Driver
[ 38.438] ABI class: X.Org Video Driver, version 14.1
[ 38.438] (II) LoadModule: "vesa"
[ 38.438] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 38.439] (II) Module vesa: vendor="X.Org Foundation"
[ 38.439] compiled for 1.14.0, module version = 2.3.2
[ 38.439] Module class: X.Org Video Driver
[ 38.439] ABI class: X.Org Video Driver, version 14.1
[ 38.439] (II) LoadModule: "modesetting"
[ 38.441] (WW) Warning, couldn't open module modesetting
[ 38.441] (II) UnloadModule: "modesetting"
[ 38.441] (II) Unloading modesetting
[ 38.441] (EE) Failed to load module "modesetting" (module does not exist, 0)
[ 38.441] (II) LoadModule: "fbdev"
[ 38.441] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 38.442] (II) Module fbdev: vendor="X.Org Foundation"
[ 38.442] compiled for 1.14.0, module version = 0.4.3
[ 38.442] Module class: X.Org Video Driver
[ 38.442] ABI class: X.Org Video Driver, version 14.1
[ 38.442] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G,
E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale,
Sandybridge Desktop (GT1), Sandybridge Desktop (GT2),
Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1),
Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+),
Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2),
Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server,
Ivybridge Server (GT2), Haswell Desktop (GT1), Haswell Desktop (GT2),
Haswell Desktop (GT2+), Haswell Mobile (GT1), Haswell Mobile (GT2),
Haswell Mobile (GT2+), Haswell Server (GT1), Haswell Server (GT2),
Haswell Server (GT2+), Haswell SDV Desktop (GT1),
Haswell SDV Desktop (GT2), Haswell SDV Desktop (GT2+),
Haswell SDV Mobile (GT1), Haswell SDV Mobile (GT2),
Haswell SDV Mobile (GT2+), Haswell SDV Server (GT1),
Haswell SDV Server (GT2), Haswell SDV Server (GT2+),
Haswell ULT Desktop (GT1), Haswell ULT Desktop (GT2),
Haswell ULT Desktop (GT2+), Haswell ULT Mobile (GT1),
Haswell ULT Mobile (GT2), Haswell ULT Mobile (GT2+),
Haswell ULT Server (GT1), Haswell ULT Server (GT2),
Haswell ULT Server (GT2+), Haswell CRW Desktop (GT1),
Haswell CRW Desktop (GT2), Haswell CRW Desktop (GT2+),
Haswell CRW Mobile (GT1), Haswell CRW Mobile (GT2),
Haswell CRW Mobile (GT2+), Haswell CRW Server (GT1),
Haswell CRW Server (GT2), Haswell CRW Server (GT2+),
ValleyView PO board
[ 38.443] (II) VESA: driver for VESA chipsets: vesa
[ 38.443] (II) FBDEV: driver for framebuffer: fbdev
[ 38.443] (++) using VT number 1
[ 38.444] (WW) Falling back to old probe method for vesa
[ 38.444] (WW) Falling back to old probe method for fbdev
[ 38.444] (II) Loading sub module "fbdevhw"
[ 38.444] (II) LoadModule: "fbdevhw"
[ 38.444] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 38.445] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 38.445] compiled for 1.14.1, module version = 0.0.2
[ 38.445] ABI class: X.Org Video Driver, version 14.1
[ 38.445] (II) intel(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 38.445] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[ 38.445] (==) intel(0): RGB weight 888
[ 38.445] (==) intel(0): Default visual is TrueColor
[ 38.445] (--) intel(0): Integrated Graphics Chipset: Intel(R) Sandybridge Mobile (GT2+)
[ 38.445] (**) intel(0): Relaxed fencing enabled
[ 38.445] (**) intel(0): Wait on SwapBuffers? enabled
[ 38.445] (**) intel(0): Triple buffering? enabled
[ 38.445] (**) intel(0): Framebuffer tiled
[ 38.445] (**) intel(0): Pixmaps tiled
[ 38.445] (**) intel(0): 3D buffers tiled
[ 38.446] (**) intel(0): SwapBuffers wait enabled
[ 38.446] (==) intel(0): video overlay key set to 0x101fe
[ 38.446] (II) intel(0): Output LVDS1 has no monitor section
[ 38.446] (--) intel(0): found backlight control interface /sys/class/backlight/acpi_video1
[ 38.473] (II) intel(0): Output VGA1 has no monitor section
[ 38.473] (II) intel(0): EDID for output LVDS1
[ 38.473] (II) intel(0): Manufacturer: LEN Model: 40b1 Serial#: 0
[ 38.473] (II) intel(0): Year: 2010 Week: 0
[ 38.473] (II) intel(0): EDID Version: 1.3
[ 38.473] (II) intel(0): Digital Display Input
[ 38.473] (II) intel(0): Max Image Size [cm]: horiz.: 34 vert.: 19
[ 38.473] (II) intel(0): Gamma: 2.20
[ 38.473] (II) intel(0): DPMS capabilities: StandBy Suspend Off
[ 38.473] (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4
[ 38.473] (II) intel(0): First detailed timing is preferred mode
[ 38.473] (II) intel(0): redX: 0.620 redY: 0.340 greenX: 0.330 greenY: 0.570
[ 38.473] (II) intel(0): blueX: 0.150 blueY: 0.060 whiteX: 0.313 whiteY: 0.329
[ 38.473] (II) intel(0): Manufacturer's mask: 0
[ 38.473] (II) intel(0): Supported detailed timing:
[ 38.473] (II) intel(0): clock: 96.3 MHz Image Size: 344 x 194 mm
[ 38.473] (II) intel(0): h_active: 1600 h_sync: 1648 h_sync_end 1680 h_blank_end 1726 h_border: 0
[ 38.473] (II) intel(0): v_active: 900 v_sync: 902 v_sync_end 907 v_blanking: 930 v_border: 0
[ 38.473] (II) intel(0): Supported detailed timing:
[ 38.473] (II) intel(0): clock: 80.6 MHz Image Size: 344 x 194 mm
[ 38.473] (II) intel(0): h_active: 1600 h_sync: 1648 h_sync_end 1680 h_blank_end 1734 h_border: 0
[ 38.473] (II) intel(0): v_active: 900 v_sync: 902 v_sync_end 907 v_blanking: 930 v_border: 0
[ 38.473] (II) intel(0): Unknown vendor-specific block f
[ 38.473] (II) intel(0): LTN156KT02401
[ 38.473] (II) intel(0): EDID (in hex):
[ 38.473] (II) intel(0): 00ffffffffffff0030aeb14000000000
[ 38.473] (II) intel(0): 0014010380221378eac8959e57549226
[ 38.473] (II) intel(0): 0f505400000001010101010101010101
[ 38.473] (II) intel(0): 0101010101019f25407e60841e303020
[ 38.473] (II) intel(0): 250058c2100000197f1f408660841e30
[ 38.473] (II) intel(0): 3020250058c2100000190000000f00a9
[ 38.473] (II) intel(0): 0932a909281609004ca34b54000000fe
[ 38.473] (II) intel(0): 004c544e3135364b5430323430310095
[ 38.473] (II) intel(0): Not using default mode "320x240" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "400x300" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "400x300" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "512x384" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "640x480" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "640x512" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "800x600" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "896x672" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "928x696" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "960x720" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "700x525" (doublescan mode not supported)
[ 38.473] (II) intel(0): Not using default mode "1024x768" (doublescan mode not supported)
[ 38.473] (II) intel(0): Printing probed modes for output LVDS1
[ 38.473] (II) intel(0): Modeline "1600x900"x60.0 96.31 1600 1648 1680 1726 900 902 907 930 -hsync -vsync (55.8 kHz eP)
[ 38.473] (II) intel(0): Modeline "1600x900"x50.0 80.63 1600 1648 1680 1734 900 902 907 930 -hsync -vsync (46.5 kHz e)
[ 38.473] (II) intel(0): Modeline "1024x768"x60.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz d)
[ 38.473] (II) intel(0): Modeline "800x600"x60.3 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz d)
[ 38.473] (II) intel(0): Modeline "800x600"x56.2 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz d)
[ 38.474] (II) intel(0): Modeline "640x480"x59.9 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz d)
[ 38.500] (II) intel(0): EDID for output VGA1
[ 38.500] (II) intel(0): Output LVDS1 connected
[ 38.500] (II) intel(0): Output VGA1 disconnected
[ 38.500] (II) intel(0): Using exact sizes for initial modes
[ 38.500] (II) intel(0): Output LVDS1 using initial mode 1600x900
[ 38.500] (II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
[ 38.500] (II) intel(0): Kernel page flipping support detected, enabling
[ 38.500] (==) intel(0): DPI set to (96, 96)
[ 38.500] (II) Loading sub module "fb"
[ 38.500] (II) LoadModule: "fb"
[ 38.500] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 38.502] (II) Module fb: vendor="X.Org Foundation"
[ 38.502] compiled for 1.14.1, module version = 1.0.0
[ 38.502] ABI class: X.Org ANSI C Emulation, version 0.4
[ 38.502] (II) Loading sub module "dri2"
[ 38.502] (II) LoadModule: "dri2"
[ 38.502] (II) Module "dri2" already built-in
[ 38.502] (II) UnloadModule: "vesa"
[ 38.502] (II) Unloading vesa
[ 38.502] (II) UnloadModule: "fbdev"
[ 38.502] (II) Unloading fbdev
[ 38.502] (II) UnloadSubModule: "fbdevhw"
[ 38.502] (II) Unloading fbdevhw
[ 38.502] (==) Depth 24 pixmap format is 32 bpp
[ 38.504] (II) intel(0): [DRI2] Setup complete
[ 38.504] (II) intel(0): [DRI2] DRI driver: i965
[ 38.504] (II) intel(0): Allocated new frame buffer 1600x900 stride 6656, tiled
[ 38.505] (II) UXA(0): Driver registered support for the following operations:
[ 38.506] (II) solid
[ 38.506] (II) copy
[ 38.506] (II) composite (RENDER acceleration)
[ 38.506] (II) put_image
[ 38.506] (II) get_image
[ 38.506] (==) intel(0): Backing store disabled
[ 38.506] (==) intel(0): Silken mouse enabled
[ 38.506] (II) intel(0): Initializing HW Cursor
[ 38.506] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[ 38.508] (==) intel(0): DPMS enabled
[ 38.508] (==) intel(0): Intel XvMC decoder enabled
[ 38.508] (II) intel(0): Set up textured video
[ 38.508] (II) intel(0): [XvMC] xvmc_vld driver initialized.
[ 38.508] (II) intel(0): direct rendering: DRI2 Enabled
[ 38.508] (==) intel(0): hotplug detection: "enabled"
[ 38.517] (--) RandR disabled
[ 38.552] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 38.552] (II) AIGLX: enabled GLX_INTEL_swap_event
[ 38.552] (II) AIGLX: enabled GLX_ARB_create_context
[ 38.552] (II) AIGLX: enabled GLX_ARB_create_context_profile
[ 38.552] (II) AIGLX: enabled GLX_EXT_create_context_es2_profile
[ 38.552] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[ 38.552] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[ 38.552] (II) AIGLX: Loaded and initialized i965
[ 38.552] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 38.553] (II) intel(0): Setting screen physical size to 423 x 238
[ 38.617] (II) config/udev: Adding input device Power Button (/dev/input/event3)
[ 38.617] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 38.617] (II) LoadModule: "evdev"
[ 38.617] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 38.619] (II) Module evdev: vendor="X.Org Foundation"
[ 38.619] compiled for 1.14.0, module version = 2.8.0
[ 38.619] Module class: X.Org XInput Driver
[ 38.619] ABI class: X.Org XInput driver, version 19.1
[ 38.619] (II) Using input driver 'evdev' for 'Power Button'
[ 38.619] (**) Power Button: always reports core events
[ 38.619] (**) evdev: Power Button: Device: "/dev/input/event3"
[ 38.619] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 38.619] (--) evdev: Power Button: Found keys
[ 38.619] (II) evdev: Power Button: Configuring as keyboard
[ 38.619] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3/event3"
[ 38.619] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 38.619] (**) Option "xkb_rules" "evdev"
[ 38.619] (**) Option "xkb_model" "evdev"
[ 38.619] (**) Option "xkb_layout" "us"
[ 38.646] (II) config/udev: Adding input device Video Bus (/dev/input/event13)
[ 38.646] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 38.646] (II) Using input driver 'evdev' for 'Video Bus'
[ 38.646] (**) Video Bus: always reports core events
[ 38.646] (**) evdev: Video Bus: Device: "/dev/input/event13"
[ 38.646] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 38.646] (--) evdev: Video Bus: Found keys
[ 38.646] (II) evdev: Video Bus: Configuring as keyboard
[ 38.646] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input13/event13"
[ 38.646] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 38.646] (**) Option "xkb_rules" "evdev"
[ 38.646] (**) Option "xkb_model" "evdev"
[ 38.646] (**) Option "xkb_layout" "us"
[ 38.647] (II) config/udev: Adding input device Video Bus (/dev/input/event14)
[ 38.647] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 38.647] (II) Using input driver 'evdev' for 'Video Bus'
[ 38.648] (**) Video Bus: always reports core events
[ 38.648] (**) evdev: Video Bus: Device: "/dev/input/event14"
[ 38.648] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 38.648] (--) evdev: Video Bus: Found keys
[ 38.648] (II) evdev: Video Bus: Configuring as keyboard
[ 38.648] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:09/LNXVIDEO:01/input/input14/event14"
[ 38.648] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 8)
[ 38.648] (**) Option "xkb_rules" "evdev"
[ 38.648] (**) Option "xkb_model" "evdev"
[ 38.648] (**) Option "xkb_layout" "us"
[ 38.649] (II) config/udev: Adding input device Lid Switch (/dev/input/event1)
[ 38.649] (II) No input driver specified, ignoring this device.
[ 38.649] (II) This device may have been added with another device file.
[ 38.649] (II) config/udev: Adding input device Sleep Button (/dev/input/event2)
[ 38.649] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[ 38.649] (II) Using input driver 'evdev' for 'Sleep Button'
[ 38.650] (**) Sleep Button: always reports core events
[ 38.650] (**) evdev: Sleep Button: Device: "/dev/input/event2"
[ 38.650] (--) evdev: Sleep Button: Vendor 0 Product 0x3
[ 38.650] (--) evdev: Sleep Button: Found keys
[ 38.650] (II) evdev: Sleep Button: Configuring as keyboard
[ 38.650] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input2/event2"
[ 38.650] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 9)
[ 38.650] (**) Option "xkb_rules" "evdev"
[ 38.650] (**) Option "xkb_model" "evdev"
[ 38.650] (**) Option "xkb_layout" "us"
[ 38.651] (II) config/udev: Adding drm device (/dev/dri/card0)
[ 38.652] (II) config/udev: Adding input device Integrated Camera (/dev/input/event6)
[ 38.652] (**) Integrated Camera: Applying InputClass "evdev keyboard catchall"
[ 38.652] (II) Using input driver 'evdev' for 'Integrated Camera'
[ 38.652] (**) Integrated Camera: always reports core events
[ 38.652] (**) evdev: Integrated Camera: Device: "/dev/input/event6"
[ 38.652] (--) evdev: Integrated Camera: Vendor 0x4f2 Product 0xb217
[ 38.652] (--) evdev: Integrated Camera: Found keys
[ 38.652] (II) evdev: Integrated Camera: Configuring as keyboard
[ 38.652] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.0/usb2/2-1/2-1.6/2-1.6:1.0/input/input6/event6"
[ 38.652] (II) XINPUT: Adding extended input device "Integrated Camera" (type: KEYBOARD, id 10)
[ 38.652] (**) Option "xkb_rules" "evdev"
[ 38.652] (**) Option "xkb_model" "evdev"
[ 38.652] (**) Option "xkb_layout" "us"
[ 38.653] (II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event7)
[ 38.653] (II) No input driver specified, ignoring this device.
[ 38.653] (II) This device may have been added with another device file.
[ 38.654] (II) config/udev: Adding input device HDA Intel PCH Headphone (/dev/input/event10)
[ 38.654] (II) No input driver specified, ignoring this device.
[ 38.654] (II) This device may have been added with another device file.
[ 38.654] (II) config/udev: Adding input device HDA Intel PCH Dock Headphone (/dev/input/event11)
[ 38.654] (II) No input driver specified, ignoring this device.
[ 38.654] (II) This device may have been added with another device file.
[ 38.655] (II) config/udev: Adding input device HDA Intel PCH Dock Mic (/dev/input/event8)
[ 38.655] (II) No input driver specified, ignoring this device.
[ 38.655] (II) This device may have been added with another device file.
[ 38.655] (II) config/udev: Adding input device HDA Intel PCH Mic (/dev/input/event9)
[ 38.655] (II) No input driver specified, ignoring this device.
[ 38.655] (II) This device may have been added with another device file.
[ 38.656] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0)
[ 38.656] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[ 38.656] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'
[ 38.656] (**) AT Translated Set 2 keyboard: always reports core events
[ 38.656] (**) evdev: AT Translated Set 2 keyboard: Device: "/dev/input/event0"
[ 38.656] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1
[ 38.656] (--) evdev: AT Translated Set 2 keyboard: Found keys
[ 38.656] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard
[ 38.656] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input0/event0"
[ 38.656] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 11)
[ 38.656] (**) Option "xkb_rules" "evdev"
[ 38.656] (**) Option "xkb_model" "evdev"
[ 38.656] (**) Option "xkb_layout" "us"
[ 38.657] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event12)
[ 38.657] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[ 38.657] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[ 38.657] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default clickpad buttons"
[ 38.657] (II) LoadModule: "synaptics"
[ 38.657] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 38.658] (II) Module synaptics: vendor="X.Org Foundation"
[ 38.658] compiled for 1.14.0, module version = 1.7.0
[ 38.658] Module class: X.Org XInput Driver
[ 38.658] ABI class: X.Org XInput driver, version 19.1
[ 38.658] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[ 38.658] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 38.658] (**) Option "Device" "/dev/input/event12"
[ 38.666] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch events for semi-multitouch device
[ 38.666] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5888 (res 75)
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4820 (res 105)
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 255
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left right double triple
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x7
[ 38.667] (**) Option "TapButton1" "1"
[ 38.667] (**) Option "TapButton2" "2"
[ 38.667] (**) Option "TapButton3" "3"
[ 38.667] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 38.667] (**) SynPS/2 Synaptics TouchPad: always reports core events
[ 38.678] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input12/event12"
[ 38.678] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD, id 12)
[ 38.678] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is now constant deceleration 2.5
[ 38.678] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MaxSpeed is now 1.75
[ 38.678] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) AccelFactor is now 0.036
[ 38.679] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[ 38.679] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[ 38.679] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[ 38.679] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[ 38.679] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[ 38.680] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[ 38.680] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "touchpad ignore duplicates"
[ 38.680] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/event15)
[ 38.680] (**) TPPS/2 IBM TrackPoint: Applying InputClass "evdev pointer catchall"
[ 38.680] (II) Using input driver 'evdev' for 'TPPS/2 IBM TrackPoint'
[ 38.680] (**) TPPS/2 IBM TrackPoint: always reports core events
[ 38.680] (**) evdev: TPPS/2 IBM TrackPoint: Device: "/dev/input/event15"
[ 38.681] (--) evdev: TPPS/2 IBM TrackPoint: Vendor 0x2 Product 0xa
[ 38.681] (--) evdev: TPPS/2 IBM TrackPoint: Found 3 mouse buttons
[ 38.681] (--) evdev: TPPS/2 IBM TrackPoint: Found relative axes
[ 38.681] (--) evdev: TPPS/2 IBM TrackPoint: Found x and y relative axes
[ 38.681] (II) evdev: TPPS/2 IBM TrackPoint: Configuring as mouse
[ 38.681] (**) evdev: TPPS/2 IBM TrackPoint: YAxisMapping: buttons 4 and 5
[ 38.681] (**) evdev: TPPS/2 IBM TrackPoint: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 38.681] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/serio2/input/input15/event15"
[ 38.681] (II) XINPUT: Adding extended input device "TPPS/2 IBM TrackPoint" (type: MOUSE, id 13)
[ 38.681] (II) evdev: TPPS/2 IBM TrackPoint: initialized for relative axes.
[ 38.681] (**) TPPS/2 IBM TrackPoint: (accel) keeping acceleration scheme 1
[ 38.681] (**) TPPS/2 IBM TrackPoint: (accel) acceleration profile 0
[ 38.681] (**) TPPS/2 IBM TrackPoint: (accel) acceleration factor: 2.000
[ 38.681] (**) TPPS/2 IBM TrackPoint: (accel) acceleration threshold: 4
[ 38.682] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/mouse1)
[ 38.682] (II) No input driver specified, ignoring this device.
[ 38.682] (II) This device may have been added with another device file.
[ 38.682] (II) config/udev: Adding input device PC Speaker (/dev/input/event5)
[ 38.683] (II) No input driver specified, ignoring this device.
[ 38.683] (II) This device may have been added with another device file.
[ 38.683] (II) config/udev: Adding input device ThinkPad Extra Buttons (/dev/input/event4)
[ 38.684] (**) ThinkPad Extra Buttons: Applying InputClass "evdev keyboard catchall"
[ 38.684] (II) Using input driver 'evdev' for 'ThinkPad Extra Buttons'
[ 38.684] (**) ThinkPad Extra Buttons: always reports core events
[ 38.684] (**) evdev: ThinkPad Extra Buttons: Device: "/dev/input/event4"
[ 38.684] (--) evdev: ThinkPad Extra Buttons: Vendor 0x17aa Product 0x5054
[ 38.684] (--) evdev: ThinkPad Extra Buttons: Found keys
[ 38.684] (II) evdev: ThinkPad Extra Buttons: Configuring as keyboard
[ 38.684] (**) Option "config_info" "udev:/sys/devices/platform/thinkpad_acpi/input/input4/event4"
[ 38.684] (II) XINPUT: Adding extended input device "ThinkPad Extra Buttons" (type: KEYBOARD, id 14)
[ 38.684] (**) Option "xkb_rules" "evdev"
[ 38.684] (**) Option "xkb_model" "evdev"
[ 38.684] (**) Option "xkb_layout" "us"
[ 39.342] (II) intel(0): EDID vendor "LEN", prod id 16561
[ 39.342] (II) intel(0): Printing DDC gathered Modelines:
[ 39.342] (II) intel(0): Modeline "1600x900"x0.0 96.31 1600 1648 1680 1726 900 902 907 930 -hsync -vsync (55.8 kHz eP)
[ 39.342] (II) intel(0): Modeline "1600x900"x0.0 80.63 1600 1648 1680 1734 900 902 907 930 -hsync -vsync (46.5 kHz e)
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
pm-powersave.log
Running hook /usr/lib/pm-utils/power.d/hal-cd-polling true:
/usr/lib/pm-utils/power.d/hal-cd-polling true: success.
Running hook /usr/lib/pm-utils/power.d/intel-audio-powersave true:
Setting power savings for snd_hda_intel to 1...Done.
/usr/lib/pm-utils/power.d/intel-audio-powersave true: success.
Running hook /usr/lib/pm-utils/power.d/journal-commit true:
Setting journal commit time for / to 600...^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
messages.log
Apr 23 14:17:27 localhost systemd[1]: Starting GNOME Display Manager...
Apr 23 14:17:27 localhost systemd[1]: Started GNOME Display Manager.
Apr 23 14:17:27 localhost dbus-daemon[316]: dbus[316]: [system] Rejected send message, 1 matched rules; type="method_call", sender=":1.18" (uid=0 pid=520 comm="/usr/sbin/gdm ") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.19" (uid=0 pid=527 comm="/usr/lib/gdm/gdm-simple-slave --display-id /org/gn")
Apr 23 14:17:27 localhost dbus-daemon[316]: dbus[316]: [system] Activating via systemd: service name='org.freedesktop.Accounts' unit='accounts-daemon.service'
Apr 23 14:17:27 localhost dbus[316]: [system] Activating via systemd: service name='org.freedesktop.Accounts' unit='accounts-daemon.service'
Apr 23 14:17:27 localhost systemd[1]: Starting Accounts Service...
Apr 23 14:17:27 localhost accounts-daemon[532]: started daemon version 0.6.31
Apr 23 14:17:27 localhost dbus[316]: [system] Successfully activated service 'org.freedesktop.Accounts'
Apr 23 14:17:27 localhost dbus-daemon[316]: dbus[316]: [system] Successfully activated service 'org.freedesktop.Accounts'
Apr 23 14:17:27 localhost systemd[1]: Started Accounts Service.
Apr 23 14:17:27 localhost gdm[520]: Failed to give slave programs access to the display. Trying to proceed.
Apr 23 14:17:28 localhost /usr/bin/dbus-launch[547]: gnome-session[547]: WARNING: Could not parse desktop file /usr/share/gdm/greeter/autostart/orca-autostart.desktop or it references a not found TryExec binary
Apr 23 14:17:28 localhost [ 39.303663] systemd-journald[173]: File /var/log/journal/6123c3322280808cac51d964000008f8/user-120.journal corrupted or uncleanly shut down, renaming and replacing.
Apr 23 14:17:28 localhost /usr/bin/dbus-launch[547]: gnome-session[547]: WARNING: could not read /usr/share/gdm/greeter/autostart/orca-autostart.desktop
Apr 23 14:17:28 localhost gnome-session[547]: WARNING: Could not parse desktop file /usr/share/gdm/greeter/autostart/orca-autostart.desktop or it references a not found TryExec binary
Apr 23 14:17:28 localhost gnome-session[547]: WARNING: could not read /usr/share/gdm/greeter/autostart/orca-autostart.desktop
Apr 23 14:17:28 localhost dbus-daemon[316]: dbus[316]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service'
Apr 23 14:17:28 localhost dbus[316]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service'
Apr 23 14:17:28 localhost systemd[1]: Starting Daemon for power management...
Apr 23 14:17:28 localhost dbus-daemon[316]: dbus[316]: [system] Successfully activated service 'org.freedesktop.UPower'
Apr 23 14:17:28 localhost dbus[316]: [system] Successfully activated service 'org.freedesktop.UPower'
Apr 23 14:17:28 localhost systemd[1]: Started Daemon for power management.
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kernel.log also gets corrupted, but it's last messages are related to wlan and and were logged long before the crash.

Answer 1

Update: I was able to log into gdm for most of the day and could work, though I haven't really solved the problem.
I found that if I run startx and then use optirun to run some program (eg glxgears), I can then stop X and start gdm. So clearly this is a graphics driver/optimus issue, and it seems something needs to be loaded before gdm starts that isn't. Comparing the output of lsmod before and after I see no new modules loaded, so I'm not sure what I'm missing.