我无法登录我的 X 会话和/或从暂停状态恢复。
大约 6 个月前开始，我的桌面管理器 lightdm 开始出现问题（尽管我尝试过 gdm3 等其他程序，但出现了同样的问题）。
在我使用外接显示器后，问题就开始出现了。似乎我的笔记本电脑上没有显示欢迎屏幕，而是尝试使用不存在的外接显示器。在笔记本电脑的显示屏上，我看到一个几乎空白的屏幕，左上角有一个下划线“_”。
这种行为尤其令人讨厌，因为它试图使用外部显示器，我甚至无法访问任何虚拟终端，必须硬重启进入恢复模式。值得注意的是，如果我使用恢复模式，然后选择恢复，我得到了欢迎并可以登录。
/etc/lightdm/lightdm.conf最终，当我使用以下命令创建文件时，我似乎解决了该问题
[Seat:*]
display-setup-script=xrandr --output eDP --primary
这似乎解决了这个问题，即我可以使用正常的启动过程，在我的笔记本电脑显示屏上获取欢迎程序，并在需要时使用外部显示器。
但是，从上周开始，这个修复不再起作用。我重启、运行apt upgrade并apt update。删除并重新安装了各种 lightdm .deb 文件，使用dpkg-reconfigure，重新安装了 gdm3，...
我当前的内核是5.4.0-91-generic #102-Ubuntu，我正在运行 MATE 20.04 LTS。这是一台 HP 笔记本电脑，运行带有 Radeon 显卡的 Ryzen-7 处理器。
之前运行 lshw 得到
*-display
description: VGA compatible controller
product: Picasso
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:04:00.0
version: c1
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
configuration: driver=amdgpu latency=0
resources: irq:50 memory:e0000000-efffffff memory:f0000000-f01fffff ioport:e000(size=256) memory:fe800000-fe87ffff
当前设置（恢复 -> 继续）
$ sudo lshw -c video |less
*-display UNCLAIMED
description: VGA compatible controller
product: Picasso
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:04:00.0
version: c1
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi msix vga_controller bus_master cap_list
configuration: latency=0
resources: memory:e0000000-efffffff memory:f0000000-f01fffff ioport:e000(size=256) memory:fe800000-fe87ffff
注意线路的变化configuration:。
$ apt search amdgpu表示我已经安装了 amdgpu。
以下是 /var/log/Xorg.0.log 中的输出
[ 10.370]
X.Org X Server 1.20.13
X Protocol Version 11, Revision 0
[ 10.370] Build Operating System: linux Ubuntu
[ 10.370] Current Operating System: Linux alanine 5.4.0-91-generic #102-Ubuntu SMP Fri Nov 5 16:31:28 UTC 2021 x86_64
[ 10.370] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-91-generic root=UUID=742c43fb-bb10-4440-9d51-747c120972f6 ro
[ 10.371] Build Date: 14 December 2021 02:14:13PM
[ 10.371] xorg-server 2:1.20.13-1ubuntu1~20.04.2 (For technical support please see http://www.ubuntu.com/support)
[ 10.371] Current version of pixman: 0.38.4
[ 10.371] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 10.371] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 10.371] (==) Log file: "/var/log/Xorg.0.log", Time: Sun Dec 26 17:08:36 2021
[ 10.373] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 10.374] (==) No Layout section. Using the first Screen section.
[ 10.374] (==) No screen section available. Using defaults.
[ 10.374] (**) |-->Screen "Default Screen Section" (0)
[ 10.374] (**) | |-->Monitor "<default monitor>"
[ 10.374] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 10.375] (==) Automatically adding devices
[ 10.375] (==) Automatically enabling devices
[ 10.375] (==) Automatically adding GPU devices
[ 10.375] (==) Automatically binding GPU devices
[ 10.375] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 10.376] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 10.376] Entry deleted from font path.
[ 10.377] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/100dpi/".
[ 10.377] Entry deleted from font path.
[ 10.377] (Run 'mkfontdir' on "/usr/share/fonts/X11/100dpi/").
[ 10.378] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/75dpi/".
[ 10.378] Entry deleted from font path.
[ 10.378] (Run 'mkfontdir' on "/usr/share/fonts/X11/75dpi/").
[ 10.378] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/100dpi".
[ 10.378] Entry deleted from font path.
[ 10.378] (Run 'mkfontdir' on "/usr/share/fonts/X11/100dpi").
[ 10.378] (WW) `fonts.dir' not found (or not valid) in "/usr/share/fonts/X11/75dpi".
[ 10.378] Entry deleted from font path.
[ 10.378] (Run 'mkfontdir' on "/usr/share/fonts/X11/75dpi").
[ 10.378] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 10.378] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 10.378] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 10.378] (II) Loader magic: 0x556edcc6e020
[ 10.378] (II) Module ABI versions:
[ 10.378] X.Org ANSI C Emulation: 0.4
[ 10.378] X.Org Video Driver: 24.1
[ 10.378] X.Org XInput driver : 24.1
[ 10.378] X.Org Server Extension : 10.0
[ 10.379] (++) using VT number 7
[ 10.379] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 10.380] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 10.393] (--) PCI:*(4@0:0:0) 1002:15d8:103c:86fd rev 193, Mem @ 0xe0000000/268435456, 0xf0000000/2097152, 0xfe800000/524288, I/O @ 0x0000e000/256
[ 10.393] (II) LoadModule: "glx"
[ 10.395] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 10.403] (II) Module glx: vendor="X.Org Foundation"
[ 10.403] compiled for 1.20.13, module version = 1.0.0
[ 10.403] ABI class: X.Org Server Extension, version 10.0
[ 10.403] (II) Applying OutputClass "AMDgpu" to /dev/dri/card0
[ 10.403] loading driver: amdgpu
[ 10.403] (==) Matched amdgpu as autoconfigured driver 0
[ 10.403] (==) Matched ati as autoconfigured driver 1
[ 10.403] (==) Matched modesetting as autoconfigured driver 2
[ 10.403] (==) Matched fbdev as autoconfigured driver 3
[ 10.403] (==) Matched vesa as autoconfigured driver 4
[ 10.403] (==) Assigned the driver to the xf86ConfigLayout
[ 10.403] (II) LoadModule: "amdgpu"
[ 10.403] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[ 10.409] (II) Module amdgpu: vendor="X.Org Foundation"
[ 10.409] compiled for 1.20.5, module version = 19.1.0
[ 10.409] Module class: X.Org Video Driver
[ 10.409] ABI class: X.Org Video Driver, version 24.0
[ 10.409] (II) LoadModule: "ati"
[ 10.409] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[ 10.410] (II) Module ati: vendor="X.Org Foundation"
[ 10.410] compiled for 1.20.5, module version = 19.1.0
[ 10.410] Module class: X.Org Video Driver
[ 10.410] ABI class: X.Org Video Driver, version 24.0
[ 10.423] (II) LoadModule: "modesetting"
[ 10.423] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 10.424] (II) Module modesetting: vendor="X.Org Foundation"
[ 10.424] compiled for 1.20.13, module version = 1.20.13
[ 10.424] Module class: X.Org Video Driver
[ 10.424] ABI class: X.Org Video Driver, version 24.1
[ 10.424] (II) LoadModule: "fbdev"
[ 10.424] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 10.425] (II) Module fbdev: vendor="X.Org Foundation"
[ 10.425] compiled for 1.20.1, module version = 0.5.0
[ 10.425] Module class: X.Org Video Driver
[ 10.425] ABI class: X.Org Video Driver, version 24.0
[ 10.425] (II) LoadModule: "vesa"
[ 10.425] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[ 10.425] (II) Module vesa: vendor="X.Org Foundation"
[ 10.425] compiled for 1.20.4, module version = 2.4.0
[ 10.425] Module class: X.Org Video Driver
[ 10.425] ABI class: X.Org Video Driver, version 24.0
[ 10.425] (II) AMDGPU: Driver for AMD Radeon:
All GPUs supported by the amdgpu kernel driver
[ 10.425] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 10.425] (II) FBDEV: driver for framebuffer: fbdev
[ 10.425] (II) VESA: driver for VESA chipsets: vesa
[ 10.444] (II) AMDGPU(0): [KMS] Kernel modesetting enabled.
[ 10.444] (WW) Falling back to old probe method for modesetting
[ 10.445] (WW) Falling back to old probe method for fbdev
[ 10.445] (II) Loading sub module "fbdevhw"
[ 10.445] (II) LoadModule: "fbdevhw"
[ 10.445] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 10.445] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 10.445] compiled for 1.20.13, module version = 0.0.2
[ 10.445] ABI class: X.Org Video Driver, version 24.1
[ 10.446] (II) AMDGPU(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 10.446] (==) AMDGPU(0): Depth 24, (--) framebuffer bpp 32
[ 10.446] (II) AMDGPU(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[ 10.446] (==) AMDGPU(0): Default visual is TrueColor
[ 10.446] (==) AMDGPU(0): RGB weight 888
[ 10.446] (II) AMDGPU(0): Using 8 bits per RGB (8 bit DAC)
[ 10.446] (--) AMDGPU(0): Chipset: "AMD Radeon(TM) Vega 10 Graphics" (ChipID = 0x15d8)
[ 10.446] (II) Loading sub module "fb"
[ 10.446] (II) LoadModule: "fb"
[ 10.446] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 10.447] (II) Module fb: vendor="X.Org Foundation"
[ 10.447] compiled for 1.20.13, module version = 1.0.0
[ 10.447] ABI class: X.Org ANSI C Emulation, version 0.4
[ 10.447] (II) Loading sub module "dri2"
[ 10.447] (II) LoadModule: "dri2"
[ 10.447] (II) Module "dri2" already built-in
[ 10.587] (II) Loading sub module "glamoregl"
[ 10.587] (II) LoadModule: "glamoregl"
[ 10.587] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[ 10.593] (II) Module glamoregl: vendor="X.Org Foundation"
[ 10.593] compiled for 1.20.13, module version = 1.0.1
[ 10.593] ABI class: X.Org ANSI C Emulation, version 0.4
[ 10.621] (II) AMDGPU(0): glamor X acceleration enabled on AMD Radeon(TM) Vega 10 Graphics (RAVEN, DRM 3.35.0, 5.4.0-91-generic, LLVM 12.0.0)
[ 10.621] (II) AMDGPU(0): glamor detected, initialising EGL layer.
[ 10.621] (==) AMDGPU(0): TearFree property default: auto
[ 10.621] (==) AMDGPU(0): VariableRefresh: disabled
[ 10.621] (II) AMDGPU(0): KMS Pageflipping: enabled
[ 10.621] (II) AMDGPU(0): Output eDP has no monitor section
[ 10.621] (II) AMDGPU(0): Output HDMI-A-0 has no monitor section
[ 10.639] (II) AMDGPU(0): EDID for output eDP
[ 10.639] (II) AMDGPU(0): Manufacturer: AUO Model: 20ec Serial#: 0
[ 10.639] (II) AMDGPU(0): Year: 2018 Week: 0
[ 10.640] (II) AMDGPU(0): EDID Version: 1.4
[ 10.640] (II) AMDGPU(0): Digital Display Input
[ 10.640] (II) AMDGPU(0): 6 bits per channel
[ 10.640] (II) AMDGPU(0): Digital interface is DisplayPort
[ 10.640] (II) AMDGPU(0): Max Image Size [cm]: horiz.: 34 vert.: 19
[ 10.640] (II) AMDGPU(0): Gamma: 2.20
[ 10.640] (II) AMDGPU(0): No DPMS capabilities specified
[ 10.640] (II) AMDGPU(0): Supported color encodings: RGB 4:4:4
[ 10.640] (II) AMDGPU(0): First detailed timing is preferred mode
[ 10.640] (II) AMDGPU(0): Preferred mode is native pixel format and refresh rate
[ 10.640] (II) AMDGPU(0): Display is continuous-frequency
[ 10.640] (II) AMDGPU(0): redX: 0.563 redY: 0.338 greenX: 0.342 greenY: 0.576
[ 10.640] (II) AMDGPU(0): blueX: 0.163 blueY: 0.133 whiteX: 0.313 whiteY: 0.329
[ 10.640] (II) AMDGPU(0): Manufacturer's mask: 0
[ 10.640] (II) AMDGPU(0): Supported detailed timing:
[ 10.640] (II) AMDGPU(0): clock: 76.3 MHz Image Size: 344 x 193 mm
[ 10.640] (II) AMDGPU(0): h_active: 1366 h_sync: 1404 h_sync_end 1426 h_blank_end 1592 h_border: 0
[ 10.640] (II) AMDGPU(0): v_active: 768 v_sync: 771 v_sync_end 777 v_blanking: 798 v_border: 0
[ 10.640] (II) AMDGPU(0): Supported detailed timing:
[ 10.640] (II) AMDGPU(0): clock: 50.9 MHz Image Size: 344 x 193 mm
[ 10.640] (II) AMDGPU(0): h_active: 1366 h_sync: 1404 h_sync_end 1426 h_blank_end 1592 h_border: 0
[ 10.640] (II) AMDGPU(0): v_active: 768 v_sync: 771 v_sync_end 777 v_blanking: 798 v_border: 0
[ 10.640] (II) AMDGPU(0): Unknown vendor-specific block 2
[ 10.640] (II) AMDGPU(0): EDID (in hex):
[ 10.640] (II) AMDGPU(0): 00ffffffffffff0006afec2000000000
[ 10.640] (II) AMDGPU(0): 001c010495221378036ac59056579329
[ 10.640] (II) AMDGPU(0): 22505400000001010101010101010101
[ 10.640] (II) AMDGPU(0): 010101010101ce1d56e250001e302616
[ 10.640] (II) AMDGPU(0): 360058c110000018df1356e250001e30
[ 10.640] (II) AMDGPU(0): 2616360058c110000018000000000000
[ 10.640] (II) AMDGPU(0): 00000000000000000000000000000002
[ 10.640] (II) AMDGPU(0): 001048ff0f3c6e480f1b6e20202000a0
[ 10.640] (II) AMDGPU(0): Printing probed modes for output eDP
[ 10.640] (II) AMDGPU(0): Modeline "1366x768"x60.1 76.30 1366 1404 1426 1592 768 771 777 798 -hsync -vsync (47.9 kHz eP)
[ 10.640] (II) AMDGPU(0): Modeline "1366x768"x40.0 50.87 1366 1404 1426 1592 768 771 777 798 -hsync -vsync (32.0 kHz e)
[ 10.640] (II) AMDGPU(0): Modeline "1280x720"x60.1 76.30 1280 1404 1426 1592 720 771 777 798 -hsync -vsync (47.9 kHz e)
[ 10.640] (II) AMDGPU(0): Modeline "1024x768"x60.1 76.30 1024 1404 1426 1592 768 771 777 798 -hsync -vsync (47.9 kHz e)
[ 10.640] (II) AMDGPU(0): Modeline "800x600"x60.1 76.30 800 1404 1426 1592 600 771 777 798 -hsync -vsync (47.9 kHz e)
[ 10.640] (II) AMDGPU(0): Modeline "640x480"x60.1 76.30 640 1404 1426 1592 480 771 777 798 -hsync -vsync (47.9 kHz e)
[ 10.640] (II) AMDGPU(0): EDID for output HDMI-A-0
[ 10.640] (II) AMDGPU(0): Output eDP connected
[ 10.640] (II) AMDGPU(0): Output HDMI-A-0 disconnected
[ 10.640] (II) AMDGPU(0): Using exact sizes for initial modes
[ 10.640] (II) AMDGPU(0): Output eDP using initial mode 1366x768 +0+0
[ 10.640] (II) AMDGPU(0): mem size init: gart size :bf7cf000 vram size: s:7ec0b000 visible:7ec0b000
[ 10.640] (==) AMDGPU(0): DPI set to (96, 96)
[ 10.640] (==) AMDGPU(0): Using gamma correction (1.0, 1.0, 1.0)
[ 10.640] (II) Loading sub module "ramdac"
[ 10.640] (II) LoadModule: "ramdac"
[ 10.640] (II) Module "ramdac" already built-in
[ 10.640] (II) UnloadModule: "modesetting"
[ 10.640] (II) Unloading modesetting
[ 10.640] (II) UnloadModule: "fbdev"
[ 10.640] (II) Unloading fbdev
[ 10.640] (II) UnloadSubModule: "fbdevhw"
[ 10.640] (II) Unloading fbdevhw
[ 10.640] (II) UnloadModule: "vesa"
[ 10.640] (II) Unloading vesa
[ 10.641] (II) AMDGPU(0): [DRI2] Setup complete
[ 10.641] (II) AMDGPU(0): [DRI2] DRI driver: radeonsi
[ 10.641] (II) AMDGPU(0): [DRI2] VDPAU driver: radeonsi
[ 10.691] (II) AMDGPU(0): Front buffer pitch: 5632 bytes
[ 10.691] (II) AMDGPU(0): SYNC extension fences enabled
[ 10.692] (II) AMDGPU(0): Present extension enabled
[ 10.692] (==) AMDGPU(0): DRI3 enabled
[ 10.692] (==) AMDGPU(0): Backing store enabled
[ 10.692] (II) AMDGPU(0): Direct rendering enabled
[ 10.711] (II) AMDGPU(0): Use GLAMOR acceleration.
[ 10.711] (II) AMDGPU(0): Acceleration enabled
[ 10.711] (==) AMDGPU(0): DPMS enabled
[ 10.711] (==) AMDGPU(0): Silken mouse enabled
[ 10.711] (II) AMDGPU(0): Set up textured video (glamor)
[ 10.723] (II) Initializing extension Generic Event Extension
[ 10.723] (II) Initializing extension SHAPE
[ 10.723] (II) Initializing extension MIT-SHM
[ 10.723] (II) Initializing extension XInputExtension
[ 10.724] (II) Initializing extension XTEST
[ 10.724] (II) Initializing extension BIG-REQUESTS
[ 10.724] (II) Initializing extension SYNC
[ 10.724] (II) Initializing extension XKEYBOARD
[ 10.724] (II) Initializing extension XC-MISC
[ 10.725] (II) Initializing extension SECURITY
[ 10.725] (II) Initializing extension XFIXES
[ 10.725] (II) Initializing extension RENDER
[ 10.725] (II) Initializing extension RANDR
[ 10.725] (II) Initializing extension COMPOSITE
[ 10.725] (II) Initializing extension DAMAGE
[ 10.725] (II) Initializing extension MIT-SCREEN-SAVER
[ 10.725] (II) Initializing extension DOUBLE-BUFFER
[ 10.726] (II) Initializing extension RECORD
[ 10.726] (II) Initializing extension DPMS
[ 10.726] (II) Initializing extension Present
[ 10.726] (II) Initializing extension DRI3
[ 10.726] (II) Initializing extension X-Resource
[ 10.726] (II) Initializing extension XVideo
[ 10.727] (II) Initializing extension XVideo-MotionCompensation
[ 10.727] (II) Initializing extension SELinux
[ 10.727] (II) SELinux: Disabled on system
[ 10.727] (II) Initializing extension GLX
[ 23.754] (II) AIGLX: Loaded and initialized radeonsi
[ 23.754] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 23.754] (II) Initializing extension XFree86-VidModeExtension
[ 23.755] (II) Initializing extension XFree86-DGA
[ 23.755] (II) Initializing extension XFree86-DRI
[ 23.755] (II) Initializing extension DRI2
[ 23.766] (II) AMDGPU(0): Setting screen physical size to 361 x 203
自从问题再次出现后，我甚至无法从计算机进入睡眠状态后恢复。有人能帮我找出发生了什么吗？
答案1
这似乎奏效了
sudo dpkg-reconfigure xserver-xorg
sudo dpkg-reconfigure xserver-xorg-video-amdgpu