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Accepted
Emre Talha
Asked: 2023-02-12 06:43:00 +0800 CST

Gnome 因 VFIO gpu 直通而挂起

  • 772

在我的电脑上，我有 2 个独立的 GPU。我一直在使用 VFIO 将第二个 GPU 传递给 Windows VM 以处理某些程序。现在我想将功能更强大的第一个 GPU 传递给 Windows VM 以玩一些游戏。（如果需要，我可以创建第二个 Windows VM，这不是问题）。

我已经用脚本检查了第一个 GPU 是否有自己的 IOMMU 组，它确实有。

问题是，当我正常启动或通过第二个 GPU 时，Gnome DE 和 gdm3 启动没有问题，但当我通过第一个 GPU 时却没有。

显示器会根据传递的 GPU 打开/关闭。

我试过重启 gdm3、kill gnome-shell、重启，但似乎对 DE 没有任何影响。GDM3不知何故启动了，但它只是得到了密码并返回到用户选择菜单。

脚本的输出：（不包括不必要的东西，只有 2 个 GPU）

IOMMU Group 12:
    00:15.0 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD/ATI] SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0) [1002:43a0]
    05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Cedar [Radeon HD 5000/6000/7350/8350 Series] [1002:68f9]
    05:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Cedar HDMI Audio [Radeon HD 5400/6300/7300 Series] [1002:aa68]
IOMMU Group 14:
    01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X] [1002:67ef] (rev cf)
    01:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] [1002:aae0]

journalctl -u gdm当它开始时（无直通）：

Feb 11 17:29:53 Alienus-PC systemd[1]: Starting GNOME Display Manager...
Feb 11 17:29:54 Alienus-PC systemd[1]: Started GNOME Display Manager.
Feb 11 17:29:57 Alienus-PC gdm-autologin][1490]: gkr-pam: no password is available for user
Feb 11 17:30:00 Alienus-PC gdm-autologin][1490]: pam_unix(gdm-autologin:session): session opened for user alienus by (uid=0)

journalctl -u gdm当它不启动时（第一个 GPU passthough）：

Feb 11 17:25:58 Alienus-PC systemd[1]: Starting GNOME Display Manager...
Feb 11 17:25:58 Alienus-PC systemd[1]: Started GNOME Display Manager.
Feb 11 17:25:58 Alienus-PC gdm-autologin][2650]: gkr-pam: no password is available for user
Feb 11 17:25:58 Alienus-PC gdm-autologin][2650]: pam_unix(gdm-autologin:session): session opened for user alienus by (uid=0)
Feb 11 17:25:58 Alienus-PC gdm-autologin][2650]: gkr-pam: couldn't unlock the login keyring.
Feb 11 17:25:59 Alienus-PC gdm-autologin][2650]: pam_unix(gdm-autologin:session): session closed for user alienus
Feb 11 17:25:59 Alienus-PC gdm3[1359]: GdmDisplay: Session never registered, failing
Feb 11 17:25:59 Alienus-PC gdm-launch-environment][2659]: pam_unix(gdm-launch-environment:session): session opened for user gdm by (uid=0)
Feb 11 17:25:59 Alienus-PC gdm-launch-environment][2659]: pam_unix(gdm-launch-environment:session): session closed for user gdm
Feb 11 17:25:59 Alienus-PC gdm3[1359]: Child process -2688 was already dead.

journalctl -u gdm启用调试（/etc/gdm3/custom.conf，第一个 GPU 直通）：https://paste.ubuntu.com/p/cSsDpBynyM/ （输出大约 52k 个字符，我不能在这里发布）

系统规格：

virtual-machine

1 个回答

  1. Best Answer

    这个答案解决了我无法使用第二个 GPU 启动 Gnome 的问题。

    为了进入没有活动 X 会话的状态，我在禁用第一个 GPU 的情况下启动。之后，我切换到tty3并运行Xorg -configure. 它创建了一个包含 21 个卡和屏幕的配置文件（很奇怪，也许它适用于所有 PCI ID）。

    在删除除我的第二个 GPU 之外的所有其他卡之后，除了前 3 个之外的所有屏幕，我将配置文件复制到/etc/X11/xorg.conf并重新启动。

    起初，我想看看当我没有禁用第一个 GPU 并正常启动时这是否有效。显示器的数量已经改变，当我向xrandr --listproviders供应商查询时，ID 为 0 的是我的第二个 GPU。在那之后，我重新启动并禁用了第一个 GPU，并且它毫无问题地启动了 Gnome DE。

    我的xorg.conf档案：

    Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    Screen      2  "Screen2" RightOf "Screen1"
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    ModulePath   "/usr/lib/xorg/modules"
    FontPath     "/usr/share/fonts/X11/misc"
    FontPath     "/usr/share/fonts/X11/cyrillic"
    FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
    FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
    FontPath     "/usr/share/fonts/X11/Type1"
    FontPath     "/usr/share/fonts/X11/100dpi"
    FontPath     "/usr/share/fonts/X11/75dpi"
    FontPath     "built-ins"
EndSection

Section "Module"
    Load  "glx"
EndSection

Section "InputDevice"
    Identifier  "Keyboard0"
    Driver      "kbd"
EndSection

Section "InputDevice"
    Identifier  "Mouse0"
    Driver      "mouse"
    Option      "Protocol" "auto"
    Option      "Device" "/dev/input/mice"
    Option      "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
    Identifier   "Monitor0"
    VendorName   "Monitor Vendor"
    ModelName    "Monitor Model"
EndSection

Section "Monitor"
    Identifier   "Monitor1"
    VendorName   "Monitor Vendor"
    ModelName    "Monitor Model"
EndSection

Section "Monitor"
    Identifier   "Monitor2"
    VendorName   "Monitor Vendor"
    ModelName    "Monitor Model"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "Accel"                 # [<bool>]
        #Option     "SWcursor"              # [<bool>]
        #Option     "EnablePageFlip"        # [<bool>]
        #Option     "SubPixelOrder"         # [<str>]
        #Option     "ZaphodHeads"           # <str>
        #Option     "AccelMethod"           # <str>
        #Option     "DRI3"                  # [<bool>]
        #Option     "DRI"                   # <i>
        #Option     "ShadowPrimary"         # [<bool>]
        #Option     "TearFree"              # [<bool>]
        #Option     "DeleteUnusedDP12Displays"  # [<bool>]
        #Option     "VariableRefresh"       # [<bool>]
    Identifier  "Card0"
    Driver      "amdgpu"
    BusID       "PCI:5:0:0"
EndSection

Section "Screen"
    Identifier "Screen0"
    Device     "Card0"
    Monitor    "Monitor0"
    SubSection "Display"
        Viewport   0 0
        Depth     1
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     4
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     8
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     15
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     16
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier "Screen1"
    Device     "Card1"
    Monitor    "Monitor1"
    SubSection "Display"
        Viewport   0 0
        Depth     1
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     4
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     8
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     15
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     16
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection

Section "Screen"
    Identifier "Screen2"
    Device     "Card2"
    Monitor    "Monitor2"
    SubSection "Display"
        Viewport   0 0
        Depth     1
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     4
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     8
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     15
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     16
    EndSubSection
    SubSection "Display"
        Viewport   0 0
        Depth     24
    EndSubSection
EndSection
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