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双显示 X Windows 配置臂

tag-icon • tag-icon linux x11 display-settings arch-arm
双显示 X Windows 配置臂

我正在 imx6 (Congatech Q7) 手臂（4.1 内核，Xorg 1.18 模块版本 2.10.1）上构建 Linux 发行版（通过 Yocto）我有两个连接在 LVDS 上的 800x480 显示器。我已成功配置硬件以通过 X 进行镜像运行。它运行起来非常出色。

我需要独立运行显示器。我可以用 X 单独调出其中任何一个。硬件只有 1 个图形加速器，所以我需要使用老式的 fb 设备。

如果我不启动 XI，则可以成功地从 fb 设备（fb0 和 fb2）来回复制图像。所以我很确定这些设备没问题。

当我配置 fbdev 时（使用与大小加速相同的选项。它报告的大小为 211x127。大小为 800x480。

我已经不知道接下来该看什么了，我希望社区中有人以前遇到过这个问题。

[3254904.461] (II) VIVANTE(0)：将屏幕物理尺寸设置为 211 x 127

Xorg.0.log 的片段

[3254904.080] (II) VIVANTE(0): [drm] Using the DRM lock SAREA also for drawables
[3254904.080] (II) VIVANTE(0): [drm] framebuffer handle = 0x44800000            
[3254904.080] (II) VIVANTE(0): [drm] added 1 reserved context for kernel        
[3254904.080] (II) VIVANTE(0): X context handle = 0x1                           
[3254904.080] (II) VIVANTE(0): [drm] installed DRM signal handler               
[3254904.081] (II) VIVANTE(0): [DRI] installation complete                      
[3254904.081] (--) RandR disabled                                               
[3254904.118] (II) AIGLX: Screen 0 is not DRI2 capable                          
[3254904.118] (EE) AIGLX: reverting to software rendering                       
[3254904.460] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer                      
[3254904.461] (II) AIGLX: Loaded and initialized swrast                         
[3254904.461] (II) GLX: Initialized DRISWRAST GL provider for screen 0          
[3254904.461] (II) VIVANTE(0): Setting screen physical size to 211 x 127

我的 xorg.conf 文件：

Section "Device"
    Identifier  "fbB"
    Driver      "fb"
    Option      "fbdev"     "/dev/fb0"
    Option      "vivante_fbdev" "/dev/fb0"
    Option      "HWcursor"  "false"
    Screen 1
EndSection
Section "Device"
    Identifier  "fbA"
    Driver      "vivante"
    Option      "fbdev"     "/dev/fb2"
    Option      "vivante_fbdev" "/dev/fb2"
    Option      "HWcursor"  "false"
    Screen 0
EndSection


Section "Monitor"
    Identifier "MonAlpha"
        Modeline "U:800x480p-59"   33.26  800 840 968 1056  480 490 492 525 -hsync -vsync -csync
EndSection

Section "Monitor"
    Identifier "MonBeta"
        Modeline "U:800x480p-59"   33.26  800 840 968 1056  480 490 492 525 -hsync -vsync -csync
EndSection

Section "Screen"
        Identifier "ScreenAlpha"
    Monitor "MonAlpha"
    Device "fbA"
    Subsection "Display"
        Modes "U:800x480p-59"       
    EndSubSection
EndSection

Section "Screen"
    Identifier "ScreenBeta"
    Monitor "MonBeta"
        Device "fbB"
    Subsection "Display"
        Modes "U:800x480p-59"       
    EndSubSection
EndSection

Section "ServerLayout"
        Identifier "Main Layout"
        Screen     0 "ScreenAlpha"  
    Screen  1 "ScreenBeta" Absolute 0 480

EndSection

Section "ServerFlags"
    Option "BlankTime"  "0"
    Option "StandbyTime"  "0"
    Option "SuspendTime"  "0"
    Option "OffTime"  "0"
EndSection

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