Laptop screen always dim at bootup on 13.04

Upon bootup of Raring Ringtail my Lenovo laptop screen is always black. I just simply increase the brightness using keyboard to fix it.
======================= Hardware List =================================
steve-ubuntu
    description: Notebook
    product: Lenovo IdeaPad N580 (LENOVO_MT_Lenovo IdeaPad N580)
    vendor: LENOVO
    version: Lenovo IdeaPad N580
    serial: 2956005300450
    width: 64 bits
    capabilities: smbios-2.7 dmi-2.7 vsyscall32
    configuration: boot=normal chassis=notebook family=IDEAPAD sku=LENOVO_MT_Lenovo IdeaPad N580 uuid=5D5490DC-FBD8-11E1-83C6-B888E3843833
  *-core
       description: Motherboard
       product: INVALID
       vendor: LENOVO
       physical id: 0
       version: 31900003WIN8 STD MLT
       serial: CB18566419
       slot: Type2 - Board Chassis Location
     *-firmware
          description: BIOS
          vendor: LENOVO
          physical id: 0
          version: 5ECN91WW(V8.03)
          date: 09/04/2012
          size: 128KiB
          capacity: 4544KiB
          capabilities: pci upgrade shadowing cdboot bootselect edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int9keyboard int10video acpi usb biosbootspecification uefi
     *-cpu
          description: CPU
          product: Intel(R) Pentium(R) CPU B960 @ 2.20GHz
          vendor: Intel Corp.
          physical id: 4
          bus info: cpu@0
          version: Intel(R) Pentium(R) CPU B960 @ 2.20GHz
          serial: To Be Filled By O.E.M.
          slot: U3E1
          size: 800MHz
          capacity: 4GHz
          width: 64 bits
          clock: 100MHz
          capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave lahf_lm arat epb xsaveopt pln pts dtherm cpufreq
          configuration: cores=2 enabledcores=2 threads=2
        *-cache:0
             description: L1 cache
             physical id: 9
             slot: L1 Cache
             size: 32KiB
             capacity: 32KiB
             capabilities: internal write-through instruction
        *-cache:1
             description: L2 cache
             physical id: a
             slot: L2 Cache
             size: 256KiB
             capacity: 256KiB
             capabilities: internal write-through unified
        *-cache:2
             description: L3 cache
             physical id: b
             slot: L3 Cache
             size: 2MiB
             capacity: 2MiB
             capabilities: internal write-back unified
     *-cache
          description: L1 cache
          physical id: 8
          slot: L1 Cache
          size: 32KiB
          capacity: 32KiB
          capabilities: internal write-through data
     *-memory
          description: System Memory
          physical id: 28
          slot: System board or motherboard
          size: 4GiB
        *-bank:0
             description: SODIMM DDR3 Synchronous 1600 MHz (0.6 ns)
             product: HMT351S6CFR8C-PB
             vendor: Unknown
             physical id: 0
             serial: 4C2FBB9D
             slot: DIMM0
             size: 4GiB
             width: 64 bits
             clock: 1600MHz (0.6ns)
        *-bank:1
             description: DIMM [empty]
             product: Empty
             vendor: Empty
             physical id: 1
             serial: Empty
             slot: DIMM1
     *-pci
          description: Host bridge
          product: 2nd Generation Core Processor Family DRAM Controller
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 09
          width: 32 bits
          clock: 33MHz
        *-display
             description: VGA compatible controller
             product: 2nd Generation Core Processor Family Integrated Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 09
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:42 memory:e0000000-e03fffff memory:d0000000-dfffffff ioport:3000(size=64)
        *-usb:0
             description: USB controller
             product: 7 Series/C210 Series Chipset Family USB xHCI Host Controller
             vendor: Intel Corporation
             physical id: 14
             bus info: pci@0000:00:14.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi xhci bus_master cap_list
             configuration: driver=xhci_hcd latency=0
             resources: irq:40 memory:e0600000-e060ffff
        *-communication
             description: Communication controller
             product: 7 Series/C210 Series Chipset Family MEI Controller #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi bus_master cap_list
             configuration: driver=mei latency=0
             resources: irq:43 memory:e0614000-e061400f
        *-usb:1
             description: USB controller
             product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2
             vendor: Intel Corporation
             physical id: 1a
             bus info: pci@0000:00:1a.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: pm debug ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:16 memory:e0619000-e06193ff
        *-multimedia
             description: Audio device
             product: 7 Series/C210 Series Chipset Family High Definition Audio Controller
             vendor: Intel Corporation
             physical id: 1b
             bus info: pci@0000:00:1b.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: pm msi pciexpress bus_master cap_list
             configuration: driver=snd_hda_intel latency=0
             resources: irq:44 memory:e0610000-e0613fff
        *-pci:0
             description: PCI bridge
             product: 7 Series/C210 Series Chipset Family PCI Express Root Port 1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: c4
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:17 ioport:2000(size=4096) memory:e0500000-e05fffff
           *-network DISABLED
                description: Ethernet interface
                product: AR8161 Gigabit Ethernet
                vendor: Qualcomm Atheros
                physical id: 0
                bus info: pci@0000:01:00.0
                logical name: eth0
                version: 08
                serial: b8:88:e3:84:38:33
                width: 64 bits
                clock: 33MHz
                capabilities: pm pciexpress msi msix bus_master cap_list ethernet physical
                configuration: broadcast=yes driver=alx latency=0 multicast=yes
                resources: irq:16 memory:e0500000-e053ffff ioport:2000(size=128)
        *-pci:1
             description: PCI bridge
             product: 7 Series/C210 Series Chipset Family PCI Express Root Port 2
             vendor: Intel Corporation
             physical id: 1c.1
             bus info: pci@0000:00:1c.1
             version: c4
             width: 32 bits
             clock: 33MHz
             capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:16 memory:e0400000-e04fffff
           *-network
                description: Wireless interface
                product: AR9285 Wireless Network Adapter (PCI-Express)
                vendor: Atheros Communications Inc.
                physical id: 0
                bus info: pci@0000:02:00.0
                logical name: wlan0
                version: 01
                serial: 74:e5:43:c8:6b:62
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=ath9k driverversion=3.8.0-18-generic firmware=N/A ip=192.168.1.2 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
                resources: irq:17 memory:e0400000-e040ffff
        *-usb:2
             description: USB controller
             product: 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: pm debug ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:23 memory:e0618000-e06183ff
        *-isa
             description: ISA bridge
             product: HM76 Express Chipset LPC Controller
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master cap_list
             configuration: driver=lpc_ich latency=0
             resources: irq:0
        *-storage
             description: SATA controller
             product: 7 Series Chipset Family 6-port SATA Controller [AHCI mode]
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 04
             width: 32 bits
             clock: 66MHz
             capabilities: storage msi pm ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:41 ioport:3088(size=8) ioport:3094(size=4) ioport:3080(size=8) ioport:3090(size=4) ioport:3060(size=32) memory:e0617000-e06177ff
        *-serial UNCLAIMED
             description: SMBus
             product: 7 Series/C210 Series Chipset Family SMBus Controller
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 04
             width: 64 bits
             clock: 33MHz
             configuration: latency=0
             resources: memory:e0615000-e06150ff ioport:3040(size=32)
     *-scsi:0
          physical id: 1
          logical name: scsi0
          capabilities: emulated
        *-disk
             description: ATA Disk
             product: WDC WD3200BPVT-2
             vendor: Western Digital
             physical id: 0.0.0
             bus info: scsi@0:0.0.0
             logical name: /dev/sda
             version: 01.0
             serial: WD-WXS1E32TFSLC
             size: 298GiB (320GB)
             capabilities: partitioned partitioned:dos
             configuration: ansiversion=5 sectorsize=4096 signature=00064dbf
           *-volume:0
                description: Linux filesystem partition
                vendor: Linux
                physical id: 1
                bus info: scsi@0:0.0.0,1
                logical name: /dev/sda1
                logical name: /boot
                version: 1.0
                serial: f481b9ff-59f6-45d1-bdbe-94869ca2ec8e
                size: 243MiB
                capacity: 243MiB
                capabilities: primary bootable ext2 initialized
                configuration: filesystem=ext2 modified=2013-04-17 00:02:40 mount.fstype=ext2 mount.options=rw,relatime,errors=continue state=mounted
           *-volume:1
                description: Extended partition
                physical id: 2
                bus info: scsi@0:0.0.0,2
                logical name: /dev/sda2
                size: 297GiB
                capacity: 297GiB
                capabilities: primary extended partitioned partitioned:extended
              *-logicalvolume
                   description: Linux filesystem partition
                   physical id: 5
                   logical name: /dev/sda5
                   capacity: 297GiB
     *-scsi:1
          physical id: 2
          logical name: scsi2
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DVD RW AD-7740H
             vendor: Optiarc
             physical id: 0.0.0
             bus info: scsi@2:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: A842
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc
     *-scsi:2
          physical id: 3
          bus info: usb@1:1.4
          logical name: scsi6
          capabilities: emulated scsi-host
          configuration: driver=rts5139
        *-disk
             description: SCSI Disk
             product: xD/SD/M.S.
             vendor: Generic-
             physical id: 0.0.0
             bus info: scsi@6:0.0.0
             logical name: /dev/sdb
             version: 1.00
             serial: 3
             capabilities: removable
             configuration: sectorsize=512
           *-medium
                physical id: 0
                logical name: /dev/sdb
  *-battery
       description: Lithium Ion Battery
       product: CRB Battery 0
       vendor: -Virtual Battery 0-
       physical id: 1
       version: 07/07/2010
       serial: Battery 0
       slot: Fake
  *-power UNCLAIMED
       description: OEM_Define1
       product: OEM_Define5
       vendor: OEM_Define2
       physical id: 2
       version: OEM_Define6
       serial: OEM_Define3
       capacity: 75mWh