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Radeon HD 5770 和双显示器设置的图形性能非常糟糕

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Radeon HD 5770 和双显示器设置的图形性能非常糟糕

在我的旧硬件上进行新安装后，我注意到性能明显下降，尽管硬件没有改变。整体操作看起来还不错。但如果我启动 YouTube 视频并将其全屏显示，我会得到可怕的性能 - 甚至有几秒钟的冻结。

另外，运行例如韦诺之战相当慢。我曾经能够在大显示器上运行韦诺之战，同时在第二台显示器上运行视频，没有任何问题。

我的显卡：

$ sudo lspci|grep VGA
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770]

我的屏幕分辨率：（输出被一些较低的分辨率裁剪了一点）

$ xrandr
Screen 0: minimum 320 x 200, current 3200 x 1080, maximum 8192 x 8192
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080      60.0*+   50.0     59.9     60.1     50.0     60.0  
   1600x1200      60.0  
   [...]
DFP3 disconnected (normal left inverted right x axis y axis)
DFP4 disconnected (normal left inverted right x axis y axis)
CRT1 disconnected (normal left inverted right x axis y axis)
CRT2 connected 1280x1024+1920+0 (normal left inverted right x axis y axis)     338mm x 270mm
   1280x1024      60.0*+   75.0  
   1280x960       60.0  
   [...]

我的内核和 ATI 驱动程序：

sys-kernel/linux-sabayon-3.12.14
x11-drivers/ati-drivers-13.12#3.12.0-sabayon

启用直接渲染：

$ glxinfo | grep rendering
direct rendering: Yes

使用 glxgears 测量性能时：

$ glxgears
15868 frames in 5.0 seconds = 3173.469 FPS

这是我的 xorg.conf，大概是由 amdcccle 生成的（我用它来配置）

Section "ServerLayout"
    Identifier     "Main Layout"
    Screen      0  "amdcccle-Screen[1]-0" 0 0
EndSection

Section "Module"
    SubSection "extmod"
        Option      "omit xfree86-dga"
    EndSubSection
    Load  "i2c"
    Load  "ddc"
    Load  "vbe"
    Load  "dri"
    Load  "glx"
    Load  "synaptics"
EndSection

Section "ServerFlags"
    Option      "AllowMouseOpenFail" "true"
EndSection

Section "Monitor"
    Identifier   "Generic Monitor"
    HorizSync    28.0 - 80.0
    VertRefresh  43.0 - 60.0
EndSection

Section "Monitor"
    Identifier   "0-DFP2"
    Option      "VendorName" "ATI Proprietary Driver"
    Option      "ModelName" "Generic Autodetecting Monitor"
    Option      "DPMS" "true"
    Option      "PreferredMode" "1920x1080"
    Option      "TargetRefresh" "60"
    Option      "Position" "0 0"
    Option      "Rotate" "normal"
    Option      "Disable" "false"
EndSection

Section "Monitor"
    Identifier   "0-CRT2"
    Option      "VendorName" "ATI Proprietary Driver"
    Option      "ModelName" "Generic Autodetecting Monitor"
    Option      "DPMS" "true"
    Option      "PreferredMode" "1280x1024"
    Option      "TargetRefresh" "60"
    Option      "Position" "1920 0"
    Option      "Rotate" "normal"
    Option      "Disable" "false"
EndSection

Section "Device"

    #BusID    "PCI:01:00"
    #Option "RenderAccel" "on"
    #Option "XAANoOffscreenPixmaps"
    #Option "BusType" "PCI"
    #Option "ColorTiling" "on"
    #Option "EnablePageFlip" "on"
    # UseEvents is causing segmentation faults with
    # NVIDIA 6xxx, 7xxx and >=275.xx.xx drivers
    #Option "UseEvents" "True"
    Identifier  "SabayonVga0"
    Driver      "fglrx"
    Option      "LogoPath" "/usr/share/backgrounds/sabayonlinux-nvidia.png"
EndSection

Section "Device"
    Identifier  "amdcccle-Device[1]-0"
    Driver      "fglrx"
    Option      "Monitor-DFP2" "0-DFP2"
    Option      "Monitor-CRT2" "0-CRT2"
    BusID       "PCI:1:0:0"
EndSection

Section "Screen"

    #Option       "AddARGBGLXVisuals" "true"
    #Option       "RegistryDwords" "EnableBrightnessControl=1"
    Identifier "Screen 0"
    Device     "SabayonVga0"
    Monitor    "Generic Monitor"
    DefaultDepth     24
    SubSection "Display"

        #Modes      "1024x768" "800x600" "640x480"
        Viewport   0 0
        Depth     8
    EndSubSection
    SubSection "Display"

        #Modes      "1024x768" "800x600" "640x480"
        Viewport   0 0
        Depth     16
    EndSubSection
    SubSection "Display"

        #Modes      "1024x768" "800x600" "640x480"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier "amdcccle-Screen[1]-0"
    Device     "amdcccle-Device[1]-0"
    DefaultDepth     24
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "DRI"
    Mode         0666
EndSection

答案1

终于解决了！

我终于得到了不错的性能和双头回来。简而言之，我必须去除催化剂，闭源 AMD/ATI 驱动程序，也称为 fglrx。相反，我现在使用开源驱动程序“readon”，表现良好。

这是我所做的：

注意：请务必备份使用这些命令覆盖的所有文件！

用火杀死 fglrx：

（看https://wiki.sabayon.org/index.php?title=HOWTO:_Get_AMD/ATI_or_Nvidia_Video_Cards_working_in_Sabayon#Roll_Back）

$ equo remove ati-drivers amdcccle
$ equo install xf86-video-ati
$ equo install x11-base/xorg-drivers
$ eselect opengl set xorg-x11
$ sed -i '/blacklist radeon/d' /etc/modprobe.d/blacklist.conf
$ sed -i 's/\<nomodeset\>//g' /etc/default/grub

此外，我必须执行以下步骤：

# remove all instances of "nomodeset" from /etc/default/sabayon-grub
$ grub2-mkconfig -o /boot/grub/grub.cfg # generates a new GRUB boot configuration file (removes the kernel parameter "nomodeset")
$ rm /etc/X11/xorg.conf         # removes xorg.conf: X server does not need it anymore, in most cases

启动后，我的第二台显示器镜像第一台显示器。我摆脱了它并使用 KDE 的配置程序配置了正确的定位和分辨率：

# Open KDE System Settings
# Klick "Hardware > Display and Monitor"
# Configure correct positioning and resolution of your Displays
# Klick "Save as Default > Safe as Default"

结果：

现在，重新启动后，我又拥有了平稳运行的 KDE 双头！

$ glxgears
301 frames in 5.0 seconds = 60.018 FPS

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