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虚拟 X 服务器可以强制使用集成显卡吗？

tag-icon • tag-icon drivers graphics xorg teamviewer
虚拟 X 服务器可以强制使用集成显卡吗？

我有一个运行 Ubuntu 22.04 的无头桌面，需要通过 Team Viewer 访问。为此，请按照说明操作这里，已安装xserver-xorg-video-dummy并创建以下 xorg 配置/etc/X11/xorg.conf：

# This xorg configuration file is meant to be used
# to start a dummy X11 server.
# For details, please see:
# https://www.xpra.org/xorg.conf

Section "Device"
        Identifier  "Configured Video Device"
        Driver      "dummy"
        #VideoRam 4096000
        #VideoRam 256000
        VideoRam    16384
EndSection

Section "Monitor"
        Identifier  "Configured Monitor"
        HorizSync   5.0 - 1000.0
        VertRefresh 5.0 - 200.0
        Modeline "1920x1080" 23.53 1920 1952 2040 2072 1080 1106 1108 1135
EndSection

Section "Screen"
        Identifier  "Default Screen"
        Monitor     "Configured Monitor"
        Device      "Configured Video Device"
        DefaultDepth 24
        SubSection "Display"
                 Viewport 0 0
                 Depth 24
                 Virtual 1920 1080
        EndSubSection
EndSection

这确实很好用。但是视觉应用程序相当慢，检查后发现 GNOME 系统信息下的图形设备是llvmpipe (LLVM 15.0.6, 256 bits)。据我所知，这是一个非常基本的渲染驱动程序，而不是应该在集成图形处理器上运行的驱动程序。

$ sudo lshw -c video
  *-display UNCLAIMED       
       description: VGA compatible controller
       product: CoffeeLake-S GT2 [UHD Graphics 630]
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:4000(size=64) memory:c0000-dffff
  *-graphics
       product: EFI VGA
       physical id: 2
       logical name: /dev/fb0
       capabilities: fb
       configuration: depth=32 resolution=800,600

lspci -k
00:00.0 Host bridge: Intel Corporation 8th Gen Core 4-core Desktop Processor Host Bridge/DRAM Registers [Coffee Lake S] (rev 08)
    DeviceName: Onboard - Other
    Subsystem: Intel Corporation 8th Gen Core 4-core Desktop Processor Host Bridge/DRAM Registers [Coffee Lake S]
    Kernel driver in use: skl_uncore
    Kernel modules: ie31200_edac
00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630]
    DeviceName: Onboard - Video
    Subsystem: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630]
    Kernel modules: i915

$ glxinfo -B
name of display: :1
display: :1  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Mesa/X.org (0xffffffff)
    Device: llvmpipe (LLVM 15.0.6, 256 bits) (0xffffffff)
    Version: 22.2.5
    Accelerated: no
    Video memory: 7849MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.5
    Max compat profile version: 4.5
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Mesa/X.org
OpenGL renderer string: llvmpipe (LLVM 15.0.6, 256 bits)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 22.2.5
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.5 (Compatibility Profile) Mesa 22.2.5
OpenGL shading language version string: 4.50
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 22.2.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

该机器没有专用显卡，但我可以让它使用集成显卡吗？或者它已经在使用集成显卡了？更改“设备”标识符和驱动程序xorg.conf只会导致 x 服务器损坏，我必须转到 TTY 会话并重置文件或将其删除。

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