Исправлена ​​подсветка в Ubuntu с MacBook 6,1?

Я недавно установил Ubuntu для двойной загрузки на моем MacBook. Однако функция яркости не работает! Это случилось только после того, как я сменил драйвер дисплея. Я использую Ubuntu 13.04

lspci:

00:00.0 Host bridge: NVIDIA Corporation MCP79 Host Bridge (rev b1)
00:00.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.0 ISA bridge: NVIDIA Corporation MCP79 LPC Bridge (rev b3)
00:03.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.2 SMBus: NVIDIA Corporation MCP79 SMBus (rev b1)
00:03.3 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.4 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.5 Co-processor: NVIDIA Corporation MCP79 Co-processor (rev b1)
00:04.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1)
00:04.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1)
00:06.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1)
00:06.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1)
00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1)
00:09.0 PCI bridge: NVIDIA Corporation MCP79 PCI Bridge (rev b1)
00:0a.0 Ethernet controller: NVIDIA Corporation MCP79 Ethernet (rev b1)
00:0b.0 IDE interface: NVIDIA Corporation MCP79 SATA Controller (rev b1)
00:10.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:15.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
02:00.0 VGA compatible controller: NVIDIA Corporation C79 [GeForce 9400M] (rev b1)
03:00.0 Network controller: Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01)

`jockey-text

kmod:nvidia_173 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
kmod:nvidia_310 - nvidia_310 (Proprietary, Enabled, Not in use)
kmod:nvidia_310_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
kmod:wl - Broadcom STA wireless driver (Proprietary, Enabled, In use) [auto-install]
kmod:nvidia_313_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
kmod:nvidia_304_updates - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)
kmod:nvidia_304 - NVIDIA binary Xorg driver, kernel module and VDPAU library (Proprietary, Disabled, Not in use)

Как ни странно, используемый мной драйвер Nvidia не отображается в процессе использования из вывода выше. Это NVIDIA binary Xorg driver, kernel module and VDAPU library from nvidia-310

Как мне исправить яркость на компьютере?