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I am trying to connect a Lenovo T430 laptop to an HDMI capable external display (It's a TV. Only available input is HDMI) with a minidisplay to HDMI adapter. The adapter itself works( on Win 7). Relevant lspci details follow.

00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Lenovo Device 21f4
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0
    Interrupt: pin A routed to IRQ 45
    Region 0: Memory at f1400000 (64-bit, non-prefetchable) [size=4M]
    Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Region 4: I/O ports at 7000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

01:00.0 VGA compatible controller: NVIDIA Corporation Device 0def (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Lenovo Device 21f4
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
    Region 1: Memory at c0000000 (64-bit, prefetchable) [size=256M]
    Region 3: Memory at d0000000 (64-bit, prefetchable) [size=32M]
    Region 5: I/O ports at 6000 [size=128]
    Expansion ROM at f1000000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel driver in use: nouveau
    Kernel modules: nouveau, nvidiafb

Thanks in advance.

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