我在 Ubuntu 22.04 上登录速度很慢（5 秒以上）。此站点上的所有相关帖子都指出 Nvidia 驱动程序是主要嫌疑人。我调查后/var/log/gpu-manager-switch.log得到了以下信息：
log_file: /var/log/gpu-manager-switch.log
last_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
new_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
can't access /run/u-d-c-nvidia-was-loaded file
can't access /opt/amdgpu-pro/bin/amdgpu-pro-px
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-520
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-515srv
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-515
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-510srv
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-510
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-470srv
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-470
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-450srv
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-418srv
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/kernel/nvidia-390
Looking for nvidia modules in /lib/modules/5.15.0-52-generic/updates/dkms
Found nvidia.ko module in /lib/modules/5.15.0-52-generic/updates/dkms/nvidia.ko
Looking for amdgpu modules in /lib/modules/5.15.0-52-generic/kernel
Looking for amdgpu modules in /lib/modules/5.15.0-52-generic/updates/dkms
Is nvidia loaded? no
Was nvidia unloaded? no
Is nvidia blacklisted? no
Is intel loaded? no
Is radeon loaded? no
Is radeon blacklisted? no
Is amdgpu loaded? yes
Is amdgpu blacklisted? no
Is amdgpu versioned? no
Is amdgpu pro stack? no
Is nouveau loaded? no
Is nouveau blacklisted? yes
Is nvidia kernel module available? yes
Is amdgpu kernel module available? no
Vendor/Device Id: 1002:15d8
BusID "PCI:5@0:0:0"
Is boot vga? yes
Vendor/Device Id: 10de:1f91
BusID "PCI:1@0:0:0"
can't open /sys/bus/pci/devices/0000:01:00.0/boot_vga
Is boot vga? no
Error: can't access /sys/bus/pci/devices/0000:01:00.0/driver
The device is not bound to any driver.
can't open /sys/bus/pci/devices/0000:01:00.0/boot_vga
Chassis type: "10"
Laptop detected
/etc/u-d-c-nvidia-runtimepm-override found. Will try runtimepm if the kernel supports it.
Linux 5.15 detected.
Is nvidia runtime pm supported for "0x1f91"? yes
Trying to create new file: /run/nvidia_runtimepm_supported
Checking power status in /proc/driver/nvidia/gpus/0000:01:00.0/power
Error while opening /proc/driver/nvidia/gpus/0000:01:00.0/power
Is nvidia runtime pm enabled for "0x1f91"? no
Found "/dev/dri/card0", driven by "amdgpu"
output 0:
card0-eDP-1
Number of connected outputs for /dev/dri/card0: 1
Skipping "/dev/dri/card0", driven by "amdgpu"
Skipping "/dev/dri/card0", driven by "amdgpu"
Skipping "/dev/dri/card0", driven by "amdgpu"
Does it require offloading? no
last cards number = 2
Has amd? yes
Has intel? no
Has nvidia? yes
How many cards? 2
Loading nvidia with "no" parameters
Has the system changed? No
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
can't access /run/u-d-c-nvidia-drm-was-loaded file
Takes 10000ms to wait for nvidia udev rules completed.
AMD IGP detected
NVIDIA hybrid system
can't open /sys/module/nvidia/version
Creating /usr/share/X11/xorg.conf.d/11-nvidia-offload.conf
Setting power control to "auto" in /sys/bus/pci/devices/0000:01:00.0/power/control
Trying to create new file: /lib/modprobe.d/nvidia-runtimepm.conf
Loading nvidia with "no" parameters
Nvidia 显然出了问题！但它是什么问题以及如何修复它？
我已经切换了几个驱动程序，但没有得到积极的结果。
系统规格：
`:+ssssssssssssssssss+:` ----------------
-+ssssssssssssssssssyyssss+- OS: Ubuntu 22.04.1 LTS x86_64
.ossssssssssssssssssdMMMNysssso. Host: Nitro AN515-43 V1.12
/ssssssssssshdmmNNmmyNMMMMhssssss/ Kernel: 5.15.0-52-generic
+ssssssssshmydMMMMMMMNddddyssssssss+ Uptime: 21 hours, 56 mins
/sssssssshNMMMyhhyyyyhmNMMMNhssssssss/ Packages: 2190 (dpkg), 7 (flatpak), 23 (snap)
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Shell: fish 3.5.1
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ Resolution: 1920x1080
ossyNMMMNyMMhsssssssssssssshmmmhssssssso DE: GNOME 42.4
ossyNMMMNyMMhsssssssssssssshmmmhssssssso WM: Mutter
+sssshhhyNMMNyssssssssssssyNMMMysssssss+ WM Theme: Adwaita
.ssssssssdMMMNhsssssssssshNMMMdssssssss. Theme: Yaru-blue-dark [GTK2/3]
/sssssssshNMMMyhhyyyyhdNMMMNhssssssss/ Icons: Yaru-blue [GTK2/3]
+sssssssssdmydMMMMMMMMddddyssssssss+ Terminal: gnome-terminal
/ssssssssssshdmNNNNmyNMMMMhssssss/ CPU: AMD Ryzen 7 3750H with Radeon Vega Mobile Gfx (8) @ 2.300GHz
.ossssssssssssssssssdMMMNysssso. GPU: NVIDIA GeForce GTX 1650 Mobile / Max-Q
-+sssssssssssssssssyyyssss+- GPU: AMD ATI Radeon Vega Series / Radeon Vega Mobile Series
`:+ssssssssssssssssss+:` Memory: 3588MiB / 13920MiB
答案1
正如长安汽车在评论中指出的那样，该问题是由安全启动引起的。禁用安全启动会导致 Nvidia 驱动程序加载。