I have two graphical cards in my computer : nvidia 740m et intel hd.Both are detected and run perfectly under Windows 8 but when i test it in kali linux, i only detect intel hd.

the "lspci | grep -i vga" command give : 00:02.0 VGA compatible controller: Intel Corporation Haswell Integrated Graphics Controller (rev 06)
Code:
root@kali:~# lsmod | grep -i nou*
nouveau               888849  0 
mxm_wmi                12515  1 nouveau
ttm                    65195  1 nouveau
drm_kms_helper         35855  2 i915,nouveau
drm                   244416  5 ttm,i915,drm_kms_helper,nvidia,nouveau
i2c_algo_bit           12751  2 i915,nouveau
i2c_core               24129  8 drm,i915,i2c_i801,drm_kms_helper,i2c_algo_bit,nvidia,nouveau,videodev
wmi                    17339  3 hp_wmi,mxm_wmi,nouveau
video                  17799  2 i915,nouveau
button                 12944  2 i915,nouveau
this is the output for lspci command :

Code:
root@kali:~# lspci -v
00:00.0 Host bridge: Intel Corporation Haswell DRAM Controller (rev 06)
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, fast devsel, latency 0
    Capabilities: [e0] Vendor Specific Information: Len=0c <?>

00:01.0 PCI bridge: Intel Corporation Haswell PCI Express x16 Controller (rev 06) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=06, sec-latency=0
    I/O behind bridge: 00005000-00005fff
    Memory behind bridge: d2000000-d2ffffff
    Prefetchable memory behind bridge: 00000000a0000000-00000000bfffffff
    Capabilities: [88] Subsystem: Hewlett-Packard Company Device 1963
    Capabilities: [80] Power Management version 3
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [a0] Express Root Port (Slot+), MSI 00
    Capabilities: [100] Virtual Channel
    Capabilities: [140] Root Complex Link
    Capabilities: [d94] #19
    Kernel driver in use: pcieport

00:02.0 VGA compatible controller: Intel Corporation Haswell Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, fast devsel, latency 0, IRQ 47
    Memory at d3000000 (64-bit, non-prefetchable) [size=4M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 6000 [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



00:1c.0 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #1 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
    Capabilities: [40] Express Root Port (Slot-), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Hewlett-Packard Company Device 1963
    Capabilities: [a0] Power Management version 3
    Kernel driver in use: pcieport

00:1c.2 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #3 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
    Memory behind bridge: d3600000-d36fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Hewlett-Packard Company Device 1963
    Capabilities: [a0] Power Management version 3
    Kernel driver in use: pcieport

00:1c.3 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #4 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=09, subordinate=0e, sec-latency=0
    I/O behind bridge: 00004000-00004fff
    Memory behind bridge: d1000000-d1ffffff
    Prefetchable memory behind bridge: 00000000d0000000-00000000d0ffffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Hewlett-Packard Company Device 1963
    Capabilities: [a0] Power Management version 3
    Kernel driver in use: pcieport

00:1c.6 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #7 (rev d5) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=0f, subordinate=0f, sec-latency=0
    I/O behind bridge: 00003000-00003fff
    Memory behind bridge: d3500000-d35fffff
    Prefetchable memory behind bridge: 00000000d3400000-00000000d34fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: Hewlett-Packard Company Device 1963
    Capabilities: [a0] Power Management version 3
    Kernel driver in use: pcieport

00:1f.2 SATA controller: Intel Corporation Lynx Point 6-port SATA Controller 1 [AHCI mode] (rev 05) (prog-if 01 [AHCI 1.0])
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 44
    I/O ports at 6088 [size=8]
    I/O ports at 6094 [size=4]
    I/O ports at 6080 [size=8]
    I/O ports at 6090 [size=4]
    I/O ports at 6060 [size=32]
    Memory at d371b000 (32-bit, non-prefetchable) [size=2K]
    Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [70] Power Management version 3
    Capabilities: [a8] SATA HBA v1.0
    Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation Lynx Point SMBus Controller (rev 05)
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: medium devsel, IRQ 18
    Memory at d3719000 (64-bit, non-prefetchable) [size=256]
    I/O ports at 6040 [size=32]

01:00.0 3D controller: NVIDIA Corporation Device 1292 (rev a1)
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at d2000000 (32-bit, non-prefetchable) [size=16M]
    Memory at a0000000 (64-bit, prefetchable) [size=256M]
    Memory at b0000000 (64-bit, prefetchable) [size=32M]
    I/O ports at 5000 [size=128]
    Expansion ROM at b2000000 [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: [100] Virtual Channel
    Capabilities: [128] Power Budgeting <?>
    Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
    Capabilities: [900] #19
    Kernel driver in use: nvidia

08:00.0 Network controller: Ralink corp. Device 3290
    Subsystem: Hewlett-Packard Company Device 18ec
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Memory at d3610000 (32-bit, non-prefetchable) [size=64K]
    Capabilities: [40] Power Management version 3
    Capabilities: [50] MSI: Enable- Count=1/32 Maskable- 64bit+
    Capabilities: [70] Express Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Device Serial Number 00-00-67-86-6c-8b-18-70
    Kernel driver in use: rt2800pci

08:00.1 Bluetooth: Ralink corp. Device 3298
    Subsystem: Hewlett-Packard Company Device 18ec
    Flags: bus master, fast devsel, latency 0, IRQ 11
    Memory at d3600000 (32-bit, non-prefetchable) [size=64K]
    Capabilities: [40] Power Management version 3
    Capabilities: [50] MSI: Enable- Count=1/32 Maskable- 64bit+
    Capabilities: [70] Express Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Device Serial Number 00-00-68-86-6c-8b-18-70

09:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. Device 5227 (rev 01)
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, fast devsel, latency 0, IRQ 41
    Memory at d1000000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [40] Power Management version 3
    Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [70] Express Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Device Serial Number 00-00-00-01-00-4c-e0-00
    Capabilities: [150] Latency Tolerance Reporting
    Capabilities: [158] #1e
    Kernel driver in use: rtsx_pci

0f:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 0c)
    Subsystem: Hewlett-Packard Company Device 1963
    Flags: bus master, fast devsel, latency 0, IRQ 42
    I/O ports at 3000 [size=256]
    Memory at d3500000 (64-bit, non-prefetchable) [size=4K]
    Memory at d3400000 (64-bit, prefetchable) [size=16K]
    Capabilities: [40] Power Management version 3
    Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [70] Express Endpoint, MSI 01
    Capabilities: [b0] MSI-X: Enable- Count=4 Masked-
    Capabilities: [d0] Vital Product Data
    Capabilities: [100] Advanced Error Reporting
    Capabilities: [140] Virtual Channel
    Capabilities: [160] Device Serial Number 01-00-00-00-68-4c-e0-00
    Capabilities: [170] Latency Tolerance Reporting
    Kernel driver in use: r8169
you can see that the keyword Nvidia is present in the output, but when i use Nvidia-detect , it give me no nvidia gpu detected.

what could be the problem??