Wikiに示すようにLinux Mint MATE 19.1をインストールし、AMD MESA 18.x +ドライバをインストールしました（ppa：paulo-miguel-dias / pkppaの追加とアップグレード）。私の仕様/設定は次のとおりです。
メーカー/モデル: Dell PowerEdge R810(第1世代)
グラフィックカード: AMD Radeon Pro WX 3100
Linux Mintバージョン：18.3と19.1を試しましたが、成功しませんでした。
つながる:
1つを監視するDisplayPort 1つ
モニター2と3を接続する2つのMini-DisplayPortケーブル
上記のPPAからMESAドライバをインストールした後、すべてのモニタにLinux Mintの起動ロゴとアニメーションが表示されていますが、ログインマネージャ（デフォルトではlightdm）が起動すると（自動ログインが有効になっている）、すべての信号が表示されます。モニターの出力が低下し、マイサーバーのVGA出力に戻ります。モニターは Windows AMD ドライバーがインストールされている Windows Server で完全に機能するため、モニターケーブルやモニター自体の問題ではありません。奇妙なことは、3つのモニターをすべてオフにするたびにモニターも機能することです。だから、ディスプレイマネージャが開いていると、グラフィックカードが機能しないようです。
Linux Mintの起動アニメーションの後、サーバーのデフォルトのVGA出力を使用できますが、グラフィックカードを介してどの出力も取得できません。問題を軽減するために取った手順は次のとおりです。
カーネルパラメータを確認してください。 nomodesetが設定されておらず、vga =も設定されていません。
私のカーネルが4.10以上であることを確認してください。
GPU設定を/etc/X11/xorg.conf.d/05-graphics.confに手動で追加してみてください。
ブラックリストを確認してみると、AMDGPUもブラックリストになくラデオンもありません。 （amd76x_edacだけが存在しますが、私の考えには関係がないと思います）
AMDGPUと混同される場合に備えて、VGAポートのデフォルトドライバであるmgag200をブラックリストに追加してみてください（これにより、VGAもXで動作しなくなるため削除しました）。
Xorgを再インストールしてみてください
Linux Mint MATE 19.1とLinux Mate Cinnamon 18.3を試してみました。
以下は、現在の状況をデバッグするために使用されるいくつかのコマンドの出力です。
$ lsmod |
amdkfd 180224 1amd_iommu_v2 20480 1 amdkfdamdgpu 2703360 1chash 16384 1 amdgpui2c_algo_bit 16384 2 mgag200,amdgputtm 106496 2 mgag200,amdgpudrm_kms_helper 167936 2 mgag200,amdgpudrm 401408 7 mgag200,amdgpu,ttm,drm_kms_helper
$ dmesg |
amdkfd 180224 1
amd_iommu_v2 20480 1 amdkfd
amdgpu 2703360 1
chash 16384 1 amdgpu
i2c_algo_bit 16384 2 mgag200,amdgpu
ttm 106496 2 mgag200,amdgpu
drm_kms_helper 167936 2 mgag200,amdgpu
drm 401408 7 mgag200,amdgpu,ttm,drm_kms_helper
08:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Lexa XT [Radeon PRO WX 3100] [1002:6985]
Subsystem: Dell Lexa XT [Radeon PRO WX 3100] [1028:0b0c]
Kernel driver in use: amdgpu
Kernel modules: amdgpu
10:03.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 [102b:0532] (rev 0a)
Subsystem: Dell MGA G200eW WPCM450 [1028:02d4]
Kernel driver in use: mgag200
Kernel modules: mgag200
$inxi-G
Graphics:
Device-1: AMD Lexa XT [Radeon PRO WX 3100] vendor: Dell driver: amdgpu
v: kernel bus ID: 08:00.0
Device-2: Matrox Systems MGA G200eW WPCM450 vendor: Dell driver: mgag200
v: kernel bus ID: 10:03.0
Display: server: X.Org 1.19.6 driver: amdgpu,ati,fbdev,vesa
unloaded: modesetting resolution: 1280x960~60Hz
OpenGL: renderer: llvmpipe (LLVM 7.0 128 bits)
v: 3.3 Mesa 18.3.3 - padoka PPA direct render: Yes
$猫/var/log/Xorg.0.log
[ 23.200]
X.Org X Server 1.19.6
Release Date: 2017-12-20
[ 23.201] X Protocol Version 11, Revision 0
[ 23.201] Build Operating System: Linux 4.4.0-138-generic x86_64 Ubuntu
[ 23.201] Current Operating System: Linux server 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64
[ 23.201] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=HIDDEN ro quiet splash vt.handoff=1
[ 23.201] Build Date: 25 October 2018 04:11:27PM
[ 23.201] xorg-server 2:1.19.6-1ubuntu4.2 (For technical support please see http://www.ubuntu.com/support)
[ 23.201] Current version of pixman: 0.34.0
[ 23.201] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 23.201] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 23.201] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Mar 4 07:53:21 2019
[ 23.201] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 23.201] (==) No Layout section. Using the first Screen section.
[ 23.201] (==) No screen section available. Using defaults.
[ 23.201] (**) |-->Screen "Default Screen Section" (0)
[ 23.201] (**) | |-->Monitor ""
[ 23.201] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 23.201] (==) Automatically adding devices
[ 23.201] (==) Automatically enabling devices
[ 23.201] (==) Automatically adding GPU devices
[ 23.201] (==) Automatically binding GPU devices
[ 23.202] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 23.202] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 23.202] Entry deleted from font path.
[ 23.202] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[ 23.202] Entry deleted from font path.
[ 23.202] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 23.202] Entry deleted from font path.
[ 23.202] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[ 23.202] Entry deleted from font path.
[ 23.202] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 23.202] Entry deleted from font path.
[ 23.202] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 23.202] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 23.202] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 23.202] (II) Loader magic: 0x55eff6484020
[ 23.202] (II) Module ABI versions:
[ 23.202] X.Org ANSI C Emulation: 0.4
[ 23.202] X.Org Video Driver: 23.0
[ 23.202] X.Org XInput driver : 24.1
[ 23.202] X.Org Server Extension : 10.0
[ 23.203] (++) using VT number 7
[ 23.203] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 23.205] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 23.251] (--) PCI: (0:8:0:0) 1002:6985:1028:0b0c rev 0, Mem @ 0xd0000000/268435456, 0xefe00000/2097152, 0xfb280000/262144, I/O @ 0x0000ec00/256, BIOS @ 0x????????/131072
[ 23.251] (--) PCI:*(0:16:3:0) 102b:0532:1028:02d4 rev 10, Mem @ 0xf0000000/8388608, 0xfaffc000/16384, 0xfa000000/8388608, BIOS @ 0x????????/131072
[ 23.251] (II) LoadModule: "glx"
[ 23.251] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 23.252] (II) Module glx: vendor="X.Org Foundation"
[ 23.252] compiled for 1.19.6, module version = 1.0.0
[ 23.252] ABI class: X.Org Server Extension, version 10.0
[ 23.252] (II) Applying OutputClass "AMDgpu" to /dev/dri/card0
[ 23.252] loading driver: amdgpu
[ 23.253] (==) Matched amdgpu as autoconfigured driver 0
[ 23.253] (==) Matched ati as autoconfigured driver 1
[ 23.253] (==) Matched mga as autoconfigured driver 2
[ 23.253] (==) Matched modesetting as autoconfigured driver 3
[ 23.253] (==) Matched fbdev as autoconfigured driver 4
[ 23.253] (==) Matched vesa as autoconfigured driver 5
[ 23.253] (==) Assigned the driver to the xf86ConfigLayout
[ 23.253] (II) LoadModule: "amdgpu"
[ 23.253] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[ 23.253] (II) Module amdgpu: vendor="X.Org Foundation"
[ 23.253] compiled for 1.19.6, module version = 18.0.1
[ 23.253] Module class: X.Org Video Driver
[ 23.253] ABI class: X.Org Video Driver, version 23.0
[ 23.253] (II) LoadModule: "ati"
[ 23.253] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[ 23.253] (II) Module ati: vendor="X.Org Foundation"
[ 23.253] compiled for 1.19.6, module version = 18.0.1
[ 23.254] Module class: X.Org Video Driver
[ 23.254] ABI class: X.Org Video Driver, version 23.0
[ 23.282] (II) LoadModule: "mga"
[ 23.283] (WW) Warning, couldn't open module mga
[ 23.283] (II) UnloadModule: "mga"
[ 23.283] (II) Unloading mga
[ 23.283] (EE) Failed to load module "mga" (module does not exist, 0)
[ 23.283] (II) LoadModule: "modesetting"
[ 23.283] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 23.283] (II) Module modesetting: vendor="X.Org Foundation"
[ 23.283] compiled for 1.19.6, module version = 1.19.6
[ 23.283] Module class: X.Org Video Driver
[ 23.283] ABI class: X.Org Video Driver, version 23.0
[ 23.283] (II) LoadModule: "fbdev"
[ 23.284] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 23.284] (II) Module fbdev: vendor="X.Org Foundation"
[ 23.284] compiled for 1.19.3, module version = 0.4.4
[ 23.284] Module class: X.Org Video Driver
[ 23.284] ABI class: X.Org Video Driver, version 23.0
[ 23.284] (II) LoadModule: "vesa"
[ 23.284] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 23.284] (II) Module vesa: vendor="X.Org Foundation"
[ 23.284] compiled for 1.19.3, module version = 2.3.4
[ 23.284] Module class: X.Org Video Driver
[ 23.285] ABI class: X.Org Video Driver, version 23.0
[ 23.285] (II) Applying OutputClass "AMDgpu" to /dev/dri/card0
[ 23.285] loading driver: amdgpu
[ 23.285] (==) Matched amdgpu as autoconfigured driver 0
[ 23.285] (==) Matched ati as autoconfigured driver 1
[ 23.285] (==) Matched mga as autoconfigured driver 2
[ 23.285] (==) Matched modesetting as autoconfigured driver 3
[ 23.285] (==) Matched fbdev as autoconfigured driver 4
[ 23.285] (==) Matched vesa as autoconfigured driver 5
[ 23.285] (==) Assigned the driver to the xf86ConfigLayout
[ 23.285] (II) LoadModule: "amdgpu"
[ 23.285] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[ 23.285] (II) Module amdgpu: vendor="X.Org Foundation"
[ 23.285] compiled for 1.19.6, module version = 18.0.1
[ 23.285] Module class: X.Org Video Driver
[ 23.285] ABI class: X.Org Video Driver, version 23.0
[ 23.285] (II) LoadModule: "ati"
[ 23.285] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[ 23.286] (II) Module ati: vendor="X.Org Foundation"
[ 23.286] compiled for 1.19.6, module version = 18.0.1
[ 23.286] Module class: X.Org Video Driver
[ 23.286] ABI class: X.Org Video Driver, version 23.0
[ 23.286] (II) LoadModule: "mga"
[ 23.286] (WW) Warning, couldn't open module mga
[ 23.286] (II) UnloadModule: "mga"
[ 23.286] (II) Unloading mga
[ 23.286] (EE) Failed to load module "mga" (module does not exist, 0)
[ 23.286] (II) LoadModule: "modesetting"
[ 23.286] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 23.287] (II) Module modesetting: vendor="X.Org Foundation"
[ 23.287] compiled for 1.19.6, module version = 1.19.6
[ 23.287] Module class: X.Org Video Driver
[ 23.287] ABI class: X.Org Video Driver, version 23.0
[ 23.287] (II) UnloadModule: "modesetting"
[ 23.287] (II) Unloading modesetting
[ 23.287] (II) Failed to load module "modesetting" (already loaded, 0)
[ 23.287] (II) LoadModule: "fbdev"
[ 23.287] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 23.287] (II) Module fbdev: vendor="X.Org Foundation"
[ 23.287] compiled for 1.19.3, module version = 0.4.4
[ 23.287] Module class: X.Org Video Driver
[ 23.287] ABI class: X.Org Video Driver, version 23.0
[ 23.287] (II) UnloadModule: "fbdev"
[ 23.287] (II) Unloading fbdev
[ 23.287] (II) Failed to load module "fbdev" (already loaded, 0)
[ 23.287] (II) LoadModule: "vesa"
[ 23.287] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 23.287] (II) Module vesa: vendor="X.Org Foundation"
[ 23.288] compiled for 1.19.3, module version = 2.3.4
[ 23.288] Module class: X.Org Video Driver
[ 23.288] ABI class: X.Org Video Driver, version 23.0
[ 23.288] (II) UnloadModule: "vesa"
[ 23.288] (II) Unloading vesa
[ 23.288] (II) Failed to load module "vesa" (already loaded, 0)
[ 23.288] (II) AMDGPU: Driver for AMD Radeon:
All GPUs supported by the amdgpu kernel driver
[ 23.288] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 23.288] (II) FBDEV: driver for framebuffer: fbdev
[ 23.288] (II) VESA: driver for VESA chipsets: vesa
[ 23.299] (WW) Falling back to old probe method for modesetting
[ 23.316] (II) modeset(1): using default device
[ 23.316] (II) Loading sub module "fbdevhw"
[ 23.316] (II) LoadModule: "fbdevhw"
[ 23.316] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 23.316] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 23.316] compiled for 1.19.6, module version = 0.0.2
[ 23.316] ABI class: X.Org Video Driver, version 23.0
[ 23.316] (**) FBDEV(2): claimed PCI slot 16@0:3:0
[ 23.316] (II) FBDEV(2): using default device
[ 23.316] (WW) Falling back to old probe method for vesa
[ 23.316] (II) [KMS] Kernel modesetting enabled.
[ 23.333] (EE) Screen 0 deleted because of no matching config section.
[ 23.333] (II) UnloadModule: "modesetting"
[ 23.333] (EE)
Fatal server error:
[ 23.333] (EE) Cannot run in framebuffer mode. Please specify busIDs for all framebuffer devices
[ 23.333] (EE)
[ 23.333] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 23.333] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 23.333] (EE)
[ 23.350] (EE) Server terminated with error (1). Closing log file.
$ sudo lshw -c を表示
*-display
description: VGA compatible controller
product: Lexa XT [Radeon PRO WX 3100]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:08:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=amdgpu latency=0
resources: irq:40 memory:d0000000-dfffffff memory:efe00000-efffffff ioport:ec00(size=256) memory:fb280000-fb2bffff memory:fb2c0000-fb2dffff
*-display
description: VGA compatible controller
product: MGA G200eW WPCM450
vendor: Matrox Electronics Systems Ltd.
physical id: 3
bus info: pci@0000:10:03.0
version: 0a
width: 32 bits
clock: 33MHz
capabilities: pm vga_controller bus_master cap_list rom
configuration: driver=mgag200 latency=64 maxlatency=32 mingnt=16
resources: irq:19 memory:f0000000-f07fffff memory:faffc000-faffffff memory:fa000000-fa7fffff memory:c0000-dffff
ご覧のとおり、X11はモニターも検出しません。
答え1
mgag200.modeset=0GRUBブートラインに追加することをお勧めします。 mgag200をブラックリストに追加するよりも、これはうまくいきます。解決策は次のとおりです。https://ask.fedoraproject.org/en/question/132035/fedora-28-server-install-failure/そしてからhttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=783783