Походил по ссылкам. Результат? Стабильный до невозможности.
Есть вопросы.

Number of GPUs: 1
GPU #0:
  Name      : GeForce GT 635M
  UUID      : GPU-e66ae3b3-b7a8-c2ae-ba26-2a6c990bd62b
  PCI BusID : PCI:1:0:0
  Number of Display Devices: 0
GPU != Display Devices ?

00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT 635M] [10de:0de3] (rev a1) (prog-if 00 [VGA controller])

00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Device [1043:1477]
	Flags: bus master, fast devsel, latency 0, IRQ 41
	Memory at f7400000 (64-bit, non-prefetchable) [size=4M]
	Memory at d0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at f000 [size=64]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
	Capabilities: [d0] Power Management version 2
	Capabilities: [a4] PCI Advanced Features
	Kernel driver in use: i915
	Kernel modules: i915
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT 635M] [10de:0de3] (rev a1) (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Device [1043:1477]
	Flags: bus master, fast devsel, latency 0, IRQ 16
	Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
	Memory at e0000000 (64-bit, prefetchable) [size=256M]
	Memory at f0000000 (64-bit, prefetchable) [size=32M]
	I/O ports at e000 [size=128]
	[virtual] Expansion ROM at f7000000 [disabled] [size=512K]
	Capabilities: [60] Power Management version 3
	Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
	Capabilities: [78] Express Endpoint, MSI 00
	Capabilities: [b4] Vendor Specific Information: Len=14 <?>
	Capabilities: [100] Virtual Channel
	Capabilities: [128] Power Budgeting <?>
	Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
	Kernel driver in use: nvidia
	Kernel modules: nouveau, nvidia

Это нормально - nouveau и nvidia в kernel modules?
У меня фиаско.
Менял адрес в '10-evdev.conf' (у меня тоже "PCI:01:00:0"). Потом средствами 'nvidia-xconfig' сгенироровал 'xorg.conf', в котором явно указал BusID (по умолчанию там такой опции нет). Загружался без '10-evdev.conf'... Не взлетел.

Ушёл писать мемуары "О тщете всего сущего".
Ребята, Среди живых конфигов в /etc/X11 есть один с с BusID:

#10-evdev.conf
# Catch-all evdev loader for udev-based systems
# We don't simply match on any device since that also adds accelerometers
# and other devices that we don't really want to use. The list below
# matches everything but joysticks.
Section "Device"
        Identifier "Device0"
        Driver "nvidia"
	VendorName "NVIDIA Corporation"
	BusID "PCI:1:0:0"
EndSection

На всякий случай GRUB
Так - работа над ошибками.

community/bumblebee 3.2.1-3
NVIDIA Optimus support for Linux through VirtualGL
multilib/lib32-mesa 9.2.0-1
an open-source implementation of the OpenGL specification (32-bit)
multilib/lib32-mesa-libgl 9.2.0-1
Mesa 3-D graphics library (32-bit)
extra/libglade 2.6.4-3
Allows you to load glade interface files in a program at runtime
extra/mesa 9.2.0-2
an open-source implementation of the OpenGL specification
extra/mesa-libgl 9.2.0-2
Mesa 3-D graphics library

mkinitcpio.conf
grub

Оптиран браво рапортует:
Bumblebee status: Ready (3.2.1). X inactive. Discrete video card is likely on.

А в итоге - "тот же самый суп":
[  636.011189] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
[  636.011801] [ERROR]Aborting because fallback start is disabled.

local/bumblebee 3.2.1-3
    NVIDIA Optimus support for Linux through VirtualGL
local/ffmpeg 1:2.0.1-1
    Complete and free Internet live audio and video broadcasting solution for Linux/Unix
local/lib32-libxv 1.0.10-1
    X11 Video extension library (32-bit)
local/lib32-nvidia-libgl 325.15-1
    NVIDIA drivers libraries symlinks (32-bit)
local/lib32-nvidia-utils 325.15-1
    NVIDIA drivers utilities (32-bit)
local/libbluray 0.3.0-1
    Library to access Blu-Ray disks for video playback
local/libcl 1.1-3
    OpenCL library and ICD loader from NVIDIA
local/libtheora 1.1.1-3
    An open video codec developed by the Xiph.org
local/libva 1.2.1-1
    Video Acceleration (VA) API for Linux
local/libvdpau 0.7-1
    Nvidia VDPAU library
local/libxv 1.0.10-1
    X11 Video extension library
local/libxvmc 1.0.8-1
    X11 Video Motion Compensation extension library
local/libxxf86vm 1.1.3-1
    X11 XFree86 video mode extension library
local/nvidia 325.15-7
    NVIDIA drivers for linux
local/nvidia-utils 325.15-1
    NVIDIA drivers utilities
local/schroedinger 1.0.11-1
    An implemenation of the Dirac video codec in ANSI C code
local/sdl 1.2.15-3
    A library for portable low-level access to a video framebuffer, audio output, mouse, and keyboard
local/v4l-utils 0.9.5-2
    Userspace tools and conversion library for Video 4 Linux
local/videoproto 2.3.2-1
    X11 Video extension wire protocol
local/x264 20130702-2
    free library for encoding H264/AVC video streams
local/xf86-video-intel 2.21.15-1 (xorg-drivers xorg)
    X.org Intel i810/i830/i915/945G/G965+ video drivers
local/xf86vidmodeproto 2.3.1-2
    X11 Video Mode extension wire protocol
local/xorg-server 1.14.3-1 (xorg)
    Xorg X server
local/xvidcore 1.3.2-1
    XviD is an open source MPEG-4 video codec

Увы, прочие "ненужные" команды у меня не запустились.
P.S. Не зря в любом случае - помогаете избавляться от мизантропии и не терять веру в человечество. Спасибо вам и коллегам за желание помочь.
palpalych
yaa
Xorg.8.log
судя по этой строчке
(EE) Failed to load module "kbd" (module does not exist, 0)
не хватает драйвера похоже на этот xf86-input-keyboard, пробуй, мне кстати не помогло ничего...

Нет.
 (EE) Failed to load module "kbd" (module does not exist, 0) (<=2.4.1)
This is a harmless message.

Отсюда.
Видел. Пытался. Почти все рецепты неприменимы - так как отсутствуют соответствующие файлы.
Вики, конечно, улыбает "You might need to define the NVIDIA card somewhere..."

Ещё такой момент, до всех манипуляций optirun --status выдаёт положительную резолюцию (Discrete video card is likely on).
Но только стоит запустить glxgears - появляется "no device" и по запросу статуса тоже уже идёт "no device".
Сердечно приветствую бригаду экзорцистов по привитию навыков свободного полёта системным демонам, бесам и бомбибл..ям.
Но у меня "No devices detected." по всем фронтам.

~]$ optirun -s /var/run/bumblebee.socket --status -vv
[  192.826069] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[  192.827193] [DEBUG]optirun version 3.2.1 starting...
[  192.827567] [DEBUG]Active configuration:
[  192.828076] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[  192.828444] [DEBUG] X display: :8
[  192.828626] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia:/usr/lib32/nvidia
[  192.828764] [DEBUG] Socket path: /var/run/bumblebee.socket
[  192.828870] [DEBUG] Accel/display bridge: auto
[  192.828976] [DEBUG] VGL Compression: proxy
[  192.829082] [DEBUG] VGLrun extra options:
[  192.829187] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[  192.829371] [DEBUG]Socket closed.
[  192.829597] [DEBUG]Killing all remaining processes.

~]$ optirun glxgears
Bumblebee status: Error (3.2.1): [XORG] (EE) No devices detected.

~]$ optirun --status
[  452.729458] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
[  452.730092] [ERROR]Aborting because fallback start is disabled.

~]$ systemctl status bumblebeed
bumblebeed.service - Bumblebee C Daemon
   Loaded: loaded (/usr/lib/systemd/system/bumblebeed.service; enabled)
   Active: active (running) since Wed 2013-09-18 09:44:58 YEKT; 8min ago
 Main PID: 285 (bumblebeed)
   CGroup: name=systemd:/system/bumblebeed.service
           └─285 /usr/bin/bumblebeed
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729277] [WARN][XORG] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729310] [WARN][XORG] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729339] [ERROR][XORG] (EE) No devices detected.
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729344] [ERROR][XORG] (EE)
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729350] [ERROR][XORG] (EE) no screens found(EE)
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729355] [ERROR][XORG] (EE)
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729359] [ERROR][XORG] (EE) Please also check the log file at "/var/log/Xorg.8.log" for additional information.
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729363] [ERROR][XORG] (EE)
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729367] [ERROR][XORG] (EE) Server terminated with error (1). Closing log file.
Sep 18 09:52:28 pampas bumblebeed[285]: [  452.729371] [ERROR]X did not start properly

Xorg.8.log
Демон "летает" как-то грузно, optirun его за пернатого не признаёт:

bumblebeed.service - Bumblebee C Daemon
   Loaded: loaded (/usr/lib/systemd/system/bumblebeed.service; enabled)
   Active: active (running) since Tue 2013-09-17 16:34:31 YEKT; 6min ago
 Main PID: 284 (bumblebeed)
   CGroup: name=systemd:/system/bumblebeed.service
           └─284 /usr/bin/bumblebeed
Sep 17 16:34:31 pampas bumblebeed[284]: modprobe: FATAL: Module bbswitch not found.
Sep 17 16:34:31 pampas bumblebeed[284]: [    2.132492] [ERROR]Module bbswitch could not be loaded (timeout?)
Sep 17 16:34:31 pampas bumblebeed[284]: [    2.132503] [WARN]No switching method available. The dedicated card will always be on.
Sep 17 16:34:31 pampas bumblebeed[284]: [    2.133358] [INFO]/usr/bin/bumblebeed 3.2.1 started
Sep 17 16:35:52 pampas systemd[1]: Started Bumblebee C Daemon.

[  434.695629] [ERROR]The Bumblebee daemon has not been started yet or the socket path status was incorrect.
[  434.696218] [ERROR]Could not connect to bumblebee daemon - is it running?

Почему optirun именует демона без, приличествующей сану, буковки D на конце?
И как корректный "socket path status" забубенить?
Так, bbswitch снёс (почему-то оказалось "гитовая" версия - это видимо, когда я от отчаяния уже начал "тыкать" куда ни попадя).

Наш неистовый демон чувствует себя так:
bumblebeed.service - Bumblebee C Daemon
   Loaded: loaded (/usr/lib/systemd/system/bumblebeed.service; enabled)
   Active: active (running) since Tue 2013-09-17 08:50:05 YEKT; 3min 32s ago
 Main PID: 291 (bumblebeed)
   CGroup: name=systemd:/system/bumblebeed.service
           ΓööΓöÇ291 /usr/bin/bumblebeed
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536574] [WARN][XORG] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/100dpi/".
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536601] [WARN][XORG] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/75dpi/".
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536634] [ERROR][XORG] (EE) No devices detected.
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536641] [ERROR][XORG] (EE)
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536671] [ERROR][XORG] (EE) no screens found(EE)
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536675] [ERROR][XORG] (EE)
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536681] [ERROR][XORG] (EE) Please also check the log file at "/var/log/Xorg.8.log" for additional information.
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536685] [ERROR][XORG] (EE)
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.536689] [ERROR][XORG] (EE) Server terminated with error (1). Closing log file.
Sep 17 08:52:04 pampas bumblebeed[291]: [  121.538603] [ERROR]X did not start properly 

Ну и:
[  264.493946] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[  264.495167] [DEBUG]optirun version 3.2.1 starting...
[  264.495511] [DEBUG]Active configuration:
[  264.495713] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[  264.495830] [DEBUG] X display: ebug
[  264.495939] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia:/usr/lib32/nvidia
[  264.496049] [DEBUG] Socket path: /var/run/bumblebee.socket
[  264.496161] [DEBUG] Accel/display bridge: auto
[  264.496272] [DEBUG] VGL Compression: proxy
[  264.496382] [DEBUG] VGLrun extra options:
[  264.496490] [DEBUG] Primus LD Path: /usr/lib/primus:/usr/lib32/primus
[  264.496628] [DEBUG]Using auto-detected bridge virtualgl
[  264.518691] [INFO]Response: No - error: [XORG] (EE) No devices detected.
[  264.519251] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
[  264.519741] [DEBUG]Socket closed.
[  264.520127] [ERROR]Aborting because fallback start is disabled.
[  264.520403] [DEBUG]Killing all remaining processes.

[  437.487029] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected.
[  437.487636] [ERROR]Aborting because fallback start is disabled. 

P.S. Вчера пытался переделать всё по Вики с переустановкой пакетов. Результат выше.

P.P.S. Извините нуба со стажем - а как "мониторить состояние видеокарты"?