optirun/primusrun no puede cargar el controlador de GPU en Ubuntu 15.04

optirun/primusrun no puede cargar el controlador de GPU en Ubuntu 15.04

Recientemente actualicé a Ubuntu 15.04. Cuando corro optirun -vv glxinfo, obtengo:

[790.194984] [DEBUG]Leyendo archivo: /etc/bumblebee/bumblebee.conf

[790.195278] [DEBUG]optirun versión 3.2.1 iniciando...

[790.195292] [DEBUG]Configuración activa:

[790.195299] [DEBUG] archivo de configuración de abejorro: /etc/bumblebee/bumblebee.conf

[790.195307] [DEPURACIÓN] Pantalla X: :8

[790.195315] [DEPURACIÓN] LD_LIBRARY_PATH:

[790.195323] [DEPURACIÓN] Ruta del socket: /var/run/bumblebee.socket

[790.195330] [DEBUG] Puente de aceleración/visualización: automático

[790.195338] [DEBUG] Compresión VGL: proxy

[790.195345] [DEBUG] Opciones adicionales de VGLrun:

[790.195353] [DEPURACIÓN] Primus LD Ruta: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus

[790.195394] [DEBUG]Usando el puente primus detectado automáticamente

[790.196751] [INFO]Respuesta: No - error: No se pudo cargar el controlador de GPU

[790.196777] [ERROR] No se puede acceder a la GPU secundaria - error: no se pudo cargar el controlador de GPU

[ 790.196793] [DEBUG] Enchufe cerrado.

[790.196815] [ERROR]Abortando porque el inicio alternativo está deshabilitado.

[790.196831] [DEBUG] Eliminando todos los procesos restantes.

Aquí está mi /etc/bumblebee/bumblebee.conf:

\# Configuration file for Bumblebee. Values should **not** be put between quotes

\#\# Server options. Any change made in this section will need a server restart
\# to take effect.
[bumblebeed]
\# The secondary Xorg server DISPLAY number
VirtualDisplay=:8
\# Should the unused Xorg server be kept running? Set this to true if waiting
\# for X to be ready is too long and don't need power management at all.
KeepUnusedXServer=false
\# The name of the Bumbleblee server group name (GID name)
ServerGroup=bumblebee
\# Card power state at exit. Set to false if the card shoud be ON when Bumblebee
\# server exits.
TurnCardOffAtExit=false
\# The default behavior of '-f' option on optirun. If set to "true", '-f' will
\# be ignored.
NoEcoModeOverride=false
\# The Driver used by Bumblebee server. If this value is not set (or empty),
\# auto-detection is performed. The available drivers are nvidia and nouveau
\# (See also the driver-specific sections below)
Driver=
\# Directory with a dummy config file to pass as a -configdir to secondary X
XorgConfDir=/etc/bumblebee/xorg.conf.d

\#\# Client options. Will take effect on the next optirun executed.
[optirun]
\# Acceleration/ rendering bridge, possible values are auto, virtualgl and
\# primus.
Bridge=auto
\# The method used for VirtualGL to transport frames between X servers.
\# Possible values are proxy, jpeg, rgb, xv and yuv.
VGLTransport=proxy
\# List of paths which are searched for the primus libGL.so.1 when using
\# the primus bridge
PrimusLibraryPath=/usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus
\# Should the program run under optirun even if Bumblebee server or nvidia card
\# is not available?
AllowFallbackToIGC=false


\# Driver-specific settings are grouped under [driver-NAME]. The sections are
\# parsed if the Driver setting in [bumblebeed] is set to NAME (or if auto-
\# detection resolves to NAME).
\# PMMethod: method to use for saving power by disabling the nvidia card, valid
\# values are: auto - automatically detect which PM method to use
\#         bbswitch - new in BB 3, recommended if available
\#       switcheroo - vga_switcheroo method, use at your own risk
\#             none - disable PM completely
\# https://github.com/Bumblebee-Project/Bumblebee/wiki/Comparison-of-PM-methods

\#\# Section with nvidia driver specific options, only parsed if Driver=nvidia
[driver-nvidia]
\# Module name to load, defaults to Driver if empty or unset
KernelDriver=nvidia-304
PMMethod=auto
\# colon-separated path to the nvidia libraries
LibraryPath=/usr/lib/nvidia-current:/usr/lib32/nvidia-current
\# comma-separated path of the directory containing nvidia_drv.so and the
\# default Xorg modules path
XorgModulePath=/usr/lib/nvidia-current/xorg,/usr/lib/xorg/modules
XorgConfFile=/etc/bumblebee/xorg.conf.nvidia

\#\# Section with nouveau driver specific options, only parsed if Driver=nouveau
[driver-nouveau]
KernelDriver=nouveau
PMMethod=auto
XorgConfFile=/etc/bumblebee/xorg.conf.nouveau

Ya intenté reinstalar todo lo relacionado con bumblebee y nvidia. He corrido sudo systemctl enable bumblebeed.

cat /proc/acpi/bbswitchimpresiones 0000:01:00.0 ON.

Después de ejecutar optirun glxinfoy posteriormente lsmod | grep nvidia, no obtengo ningún resultado, pero después sudo modprobe nvidia-304, lsmodencuentra el módulo nvidia nuevamente.

Tengo un Lenovo Thinkpad T530 con una GPU Nvidia NVS 5400 y otro chip Intel integrado.

Espero haber dado suficiente información para que alguien me ayude a solucionar mi problema. Gracias de antemano.

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