I am using Dell Vostro 3750 laptop with 2 monitors. OS Kubuntu 13.04
1 monitor I connected with VGA and it is working fine. But another monitor connected to HDMI port is not detected. I connected HDMI monitor to my friends laptop having Windows 7 and it works fine. but only with Ubuntu it is not working.
lspci -v output
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 525M] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device 04c6 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f0000000 (32-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d0000000 (64-bit, prefetchable) [size=32M] I/O ports at 4000 [size=128] Expansion ROM at f1000000 [disabled] [size=512K] Capabilities:  Power Management version 3 Capabilities:  MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities:  Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities:  Virtual Channel Capabilities:  Power Budgeting <?> Capabilities:  Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nvidia Kernel modules: nvidia_current_updates, nvidia, nouveau, nvidiafb 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device 04c6 Flags: bus master, fast devsel, latency 0, IRQ 51 Memory at f1400000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at 5000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities:  MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915
xrandr Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767 LVDS1 connected (normal left inverted right x axis y axis) 640x480 59.9 VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 298mm 1920x1080 60.0*+ 1680x1050 60.0 1600x900 60.0 1280x1024 75.0 60.0 1280x800 59.8 1152x864 75.0 1280x720 60.0 1024x768 75.1 60.0 832x624 74.6 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1
Any help would be appreciated.