laptop lenovo idea pad u430p, Linux Mint 16. Like I said in the title occasionally graphic freezes while all other systems continue to work normally (music plays, for example). Sometimes it unfreezes after minute or so, sometimes not and I had to hard reset the machine. lspci -v 00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 09)        Subsystem: Lenovo Device 3978        Flags: bus master, fast devsel, latency 0        Capabilities: [e0] Vendor Specific Information: Len=0c <?>00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])        Subsystem: Lenovo Device 3800        Flags: bus master, fast devsel, latency 0, IRQ 64        Memory at b5000000 (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                                                                                    00:03.0 Audio device: Intel Corporation Device 0a0c (rev 09)                                                                  Subsystem: Lenovo Device 3978                                                                                         Flags: bus master, fast devsel, latency 0, IRQ 68                                                                     Memory at b5610000 (64-bit, non-prefetchable) [size=16K]                                                              Capabilities: [50] Power Management version 2                                                                         Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-                                                            Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00                                                   Kernel driver in use: snd_hda_intel                                                                           00:14.0 USB controller: Intel Corporation Lynx Point-LP USB xHCI HC (rev 04) (prog-if 30 [XHCI])                              Subsystem: Lenovo Device 3978        Flags: bus master, medium devsel, latency 0, IRQ 60        Memory at b5600000 (64-bit, non-prefetchable) [size=64K]        Capabilities: [70] Power Management version 2        Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+        Kernel driver in use: xhci_hcd00:16.0 Communication controller: Intel Corporation Lynx Point-LP HECI #0 (rev 04)        Subsystem: Lenovo Device 3978        Flags: bus master, fast devsel, latency 0, IRQ 65        Memory at b5618000 (64-bit, non-prefetchable) [size=32]        Capabilities: [50] Power Management version 3        Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+        Kernel driver in use: mei_me00:1b.0 Audio device: Intel Corporation Lynx Point-LP HD Audio Controller (rev 04)        Subsystem: Lenovo Device 3978        Flags: bus master, fast devsel, latency 0, IRQ 67        Memory at b5614000 (64-bit, non-prefetchable) [size=16K]        Capabilities: [50] Power Management version 3        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+        Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00        Capabilities: [100] Virtual Channel        Kernel driver in use: snd_hda_intel00:1c.0 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 1 (rev e4) (prog-if 00 [Normal decode])        Flags: bus master, fast devsel, latency 0        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0        I/O behind bridge: 00005000-00005fff        Memory behind bridge: b5500000-b55fffff        Capabilities: [40] Express Root Port (Slot+), MSI 00        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-        Capabilities: [90] Subsystem: Lenovo Device 3978        Capabilities: [a0] Power Management version 3        Kernel driver in use: pcieport00:1c.2 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 3 (rev e4) (prog-if 00 [Normal decode])        Flags: bus master, fast devsel, latency 0        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0        Memory behind bridge: b5400000-b54fffff        Capabilities: [40] Express Root Port (Slot+), MSI 00        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-        Capabilities: [90] Subsystem: Lenovo Device 3978        Capabilities: [a0] Power Management version 3        Kernel driver in use: pcieport00:1c.3 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 4 (rev e4) (prog-if 00 [Normal decode])        Flags: bus master, fast devsel, latency 0        Bus: primary=00, secondary=03, subordinate=08, sec-latency=0        I/O behind bridge: 00004000-00004fff        Memory behind bridge: b4000000-b4ffffff        Prefetchable memory behind bridge: 00000000b2000000-00000000b2ffffff        Capabilities: [40] Express Root Port (Slot+), MSI 00        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-        Capabilities: [90] Subsystem: Lenovo Device 3978        Capabilities: [a0] Power Management version 3        Kernel driver in use: pcieport00:1c.4 PCI bridge: Intel Corporation Lynx Point-LP PCI Express Root Port 5 (rev e4) (prog-if 00 [Normal decode])        Flags: bus master, fast devsel, latency 0        Bus: primary=00, secondary=09, subordinate=09, sec-latency=0        I/O behind bridge: 00003000-00003fff        Memory behind bridge: b3000000-b3ffffff        Prefetchable memory behind bridge: 00000000a0000000-00000000b1ffffff        Capabilities: [40] Express Root Port (Slot+), MSI 00        Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-        Capabilities: [90] Subsystem: Lenovo Device 3978        Capabilities: [a0] Power Management version 3        Kernel driver in use: pcieport00:1d.0 USB controller: Intel Corporation Lynx Point-LP USB EHCI #1 (rev 04) (prog-if 20 [EHCI])        Subsystem: Lenovo Device 3978        Flags: bus master, medium devsel, latency 0, IRQ 23        Memory at b561c000 (32-bit, non-prefetchable) [size=1K]        Capabilities: [50] Power Management version 3        Capabilities: [58] Debug port: BAR=1 offset=00a0        Capabilities: [98] PCI Advanced Features        Kernel driver in use: ehci-pci00:1f.0 ISA bridge: Intel Corporation Lynx Point-LP LPC Controller (rev 04)        Subsystem: Lenovo Device 3978        Flags: bus master, medium devsel, latency 0        Capabilities: [e0] Vendor Specific Information: Len=0c <?>        Kernel driver in use: lpc_ich00:1f.2 SATA controller: Intel Corporation Lynx Point-LP SATA Controller 1 [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])        Subsystem: Lenovo Device 3978        Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 61        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 b561b000 (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: ahci00:1f.3 SMBus: Intel Corporation Lynx Point-LP SMBus Controller (rev 04)        Subsystem: Lenovo Device 3978        Flags: medium devsel, IRQ 11        Memory at b5619000 (64-bit, non-prefetchable) [size=256]        I/O ports at 6040 [size=32]01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)        Subsystem: Lenovo Device 3801        Flags: bus master, fast devsel, latency 0, IRQ 62        I/O ports at 5000 [size=256]        Memory at b5504000 (64-bit, non-prefetchable) [size=4K]        Memory at b5500000 (64-bit, non-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        Capabilities: [178] #1e        Kernel driver in use: r816902:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)        Subsystem: Intel Corporation Wireless-N 7260        Flags: bus master, fast devsel, latency 0, IRQ 66        Memory at b5400000 (64-bit, non-prefetchable) [size=8K]        Capabilities: [c8] Power Management version 3        Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+        Capabilities: [40] Express Endpoint, MSI 00        Capabilities: [100] Advanced Error Reporting        Capabilities: [140] Device Serial Number 0c-8b-fd-ff-ff-b4-c8-41        Capabilities: [14c] Latency Tolerance Reporting        Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>        Kernel driver in use: iwlwifi09:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 730M] (rev a1)        Subsystem: Lenovo Device 3800        Flags: bus master, fast devsel, latency 0, IRQ 63        Memory at b3000000 (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 3000 [size=128]        Expansion ROM at <ignored> [disabled]        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 <?>        Kernel driver in use: nouveauuname -aLinux laptop 3.13.2-031302-generic #201402061638 SMP Thu Feb 6 21:39:32 UTC 2014 x86_64 x86_64 x86_64 GNU/LinuxI have nouveau driver installed:    dmesg | grep nouveau[    1.690417] nouveau 0000:09:00.0: enabling device (0006 -> 0007)[    1.690747] nouveau  [  DEVICE][0000:09:00.0] BOOT0  : 0x108100a1[    1.690749] nouveau  [  DEVICE][0000:09:00.0] Chipset: GK208 (NV108)[    1.690750] nouveau  [  DEVICE][0000:09:00.0] Family : NVE0[    1.692604] nouveau  [   VBIOS][0000:09:00.0] checking PRAMIN for image...[    1.693697] nouveau  [   VBIOS][0000:09:00.0] ... signature not found[    1.693700] nouveau  [   VBIOS][0000:09:00.0] checking PROM for image...[    1.693771] nouveau  [   VBIOS][0000:09:00.0] ... signature not found[    1.693773] nouveau  [   VBIOS][0000:09:00.0] checking ACPI for image...[    2.426007] nouveau  [   VBIOS][0000:09:00.0] ... appears to be valid[    2.426012] nouveau  [   VBIOS][0000:09:00.0] using image from ACPI[    2.426139] nouveau  [   VBIOS][0000:09:00.0] BIT signature found[    2.426143] nouveau  [   VBIOS][0000:09:00.0] version 80.28.25.00.25[    2.426612] nouveau  [ DEVINIT][0000:09:00.0] adaptor not initialised[    2.426615] nouveau  [   VBIOS][0000:09:00.0] running init tables[    2.489085] nouveau 0000:09:00.0: irq 63 for MSI/MSI-X[    2.489095] nouveau  [     PMC][0000:09:00.0] MSI interrupts enabled[    2.489134] nouveau  [     PFB][0000:09:00.0] RAM type: DDR3[    2.489136] nouveau  [     PFB][0000:09:00.0] RAM size: 2048 MiB[    2.489138] nouveau  [     PFB][0000:09:00.0]    ZCOMP: 0 tags[    2.489204] nouveau E[   PIBUS][0000:09:00.0] GPC0: 0x4188ac 0x00000001 (0x1c70822e)[    2.493775] nouveau  [    VOLT][0000:09:00.0] GPU voltage: 600000uv[    2.516824] nouveau  [  PTHERM][0000:09:00.0] FAN control: none / external[    2.516829] nouveau  [  PTHERM][0000:09:00.0] fan management: automatic[    2.516831] nouveau  [  PTHERM][0000:09:00.0] internal sensor: yes[    2.516856] nouveau  [     CLK][0000:09:00.0] 07: core 405 MHz memory 405 MHz [    2.516900] nouveau  [     CLK][0000:09:00.0] 0a: core 405-875 MHz memory 810 MHz [    2.516958] nouveau  [     CLK][0000:09:00.0] 0f: core 405-875 MHz memory 1001 MHz [    2.517040] nouveau  [     CLK][0000:09:00.0] --: core 405 MHz memory 405 MHz [    2.517150] nouveau  [     DRM] VRAM: 2048 MiB[    2.517151] nouveau  [     DRM] GART: 1048576 MiB[    2.517164] nouveau E[     DRM] Pointer to TMDS table invalid[    2.517797] nouveau  [     DRM] DCB version 4.0[    2.517798] nouveau E[     DRM] Pointer to flat panel table invalid[    2.518615] nouveau  [     DRM] ACPI backlight interface available, not registering our own[    2.518666] [drm] Initialized nouveau 1.1.1 20120801 for 0000:09:00.0 on minor 0[  471.927416] nouveau E[   PIBUS][0000:09:00.0] GPC0: 0x4188ac 0x00000001 (0x1870822e)What can I do to further investigate the issue? 
On 13.10 mint graphic periodically freezes after recent updates
linux mint;drivers;nvidia