如何找到图形卡支持的DisplayPort版本？

Question

DisplayPort有不同的版本，所有版本都使用相同的电缆和终止符，但协议的不同版本。如何找到我的图形卡和驱动程序支持的DisplayPort版本？

我使用的是x230 (来自lspci -vv)

00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
        Subsystem: Lenovo 3rd Gen Core processor Graphics Controller
        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 29
        Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at 6000 [size=64]
        [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: i915
        Kernel modules: i915

Answer 1

来自https://www.intel.com/content/www/us/en/support/articles/000023781/graphics-drivers.html：

对于第二代和第三代英特尔核心™处理器，最大支持的分辨率是：

• DisplayPort 1.1 = 2560x1600 ( 60 Hz )
• HDMI 1.4 = 1920x1200 ( 60 Hz )
• DVI (单链)= 1920x1200 ( 60 Hz )
• VGA = 2048x1536，75 Hz

所以，看起来是DisplayPort 1.1。