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18.04 版中 Dell DisplayLink 多显示器无法工作

tag-icon • tag-icon multiple-monitors dell wayland displaylink
18.04 版中 Dell DisplayLink 多显示器无法工作

我刚刚在 Dell Latitude 上安装了 Ubuntu 18.04（之前使用的是 Elementary OS），它有两个通过 DisplayLink 底座连接的显示器。在从 Dell 网站安装 DisplayLink 驱动程序后，我设法让三个屏幕（笔记本电脑屏幕 + 两个外接屏幕）在 Elemantary OS 上工作。在 Ubuntu 18.04 上，我看不到外接显示器，尽管我设法安装了 DispplayLink 驱动程序。

我曾尝试使用 NVIDIA 专有驱动程序 (nvidia-driver-390) 和 X.Org nouveau (xserver-xorg-video-nouveau)。

编辑（2018 年 10 月）：安装了最新的 Dell DisplayLink 驱动程序，该驱动程序显示它可与 Ubuntu 18.04 配合使用http://www.displaylink.com/downloads/ubuntu 问题依然存在。

另一个问题可能相关：我只能使用“Ubuntu on Wayland”启动 Ubuntu，输入密码后，默认的 Ubuntu 就会立即返回登录屏幕。

$ lspci -k
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
    Subsystem: Dell Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
00:01.0 PCI bridge: Intel Corporation Skylake PCIe Controller (x16) (rev 05)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:01.1 PCI bridge: Intel Corporation Skylake PCIe Controller (x8) (rev 05)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:02.0 VGA compatible controller: Intel Corporation Device 591b (rev 04)
    Subsystem: Dell Device 07d0
    Kernel driver in use: i915
    Kernel modules: i915
00:04.0 Signal processing controller: Intel Corporation Skylake Processor Thermal Subsystem (rev 05)
    Subsystem: Dell Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem
    Kernel driver in use: proc_thermal
    Kernel modules: processor_thermal_device
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
    Subsystem: Dell Sunrise Point-H USB 3.0 xHCI Controller
    Kernel driver in use: xhci_hcd
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)
    Subsystem: Dell Sunrise Point-H Thermal subsystem
    Kernel driver in use: intel_pch_thermal
    Kernel modules: intel_pch_thermal
00:15.0 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #0 (rev 31)
    Subsystem: Dell Sunrise Point-H Serial IO I2C Controller
    Kernel driver in use: intel-lpss
    Kernel modules: intel_lpss_pci
00:15.1 Signal processing controller: Intel Corporation Sunrise Point-H Serial IO I2C Controller #1 (rev 31)
    Subsystem: Dell Sunrise Point-H Serial IO I2C Controller
    Kernel driver in use: intel-lpss
    Kernel modules: intel_lpss_pci
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
    Subsystem: Dell Sunrise Point-H CSME HECI
    Kernel driver in use: mei_me
    Kernel modules: mei_me
00:17.0 RAID bus controller: Intel Corporation SATA Controller [RAID mode] (rev 31)
    Subsystem: Dell SATA Controller [RAID mode]
    Kernel driver in use: ahci
    Kernel modules: ahci
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #2 (rev f1)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #3 (rev f1)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1c.4 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #5 (rev f1)
    Kernel driver in use: pcieport
    Kernel modules: shpchp
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
    Subsystem: Dell Sunrise Point-H LPC Controller
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
    Subsystem: Dell Sunrise Point-H PMC
00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
    Subsystem: Dell CM238 HD Audio Controller
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
    Subsystem: Dell Sunrise Point-H SMBus
    Kernel modules: i2c_i801
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (5) I219-LM (rev 31)
    Subsystem: Dell Ethernet Connection (5) I219-LM
    Kernel driver in use: e1000e
    Kernel modules: e1000e
02:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 930MX] (rev a2)
    Subsystem: Dell GM108M [GeForce 930MX]
    Kernel driver in use: nouveau
    Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia
03:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
    Subsystem: Intel Corporation Wireless 8265 / 8275
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI Express Card Reader (rev 01)
    Subsystem: Dell RTS525A PCI Express Card Reader
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

答案1

事实证明，使用 Wayland 是罪魁祸首，可能与 DisplayLink 驱动程序结合使用。从http://www.displaylink.com/downloads/ubuntu并在登录屏幕切换回“Ubuntu”（默认）解决了该问题。

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