打开 nvidia 设置时出现以下错误：
$ sudo nvidia-smi
ERROR: Unable to load info from any available system
(nvidia-settings:7395): GLib-GObject-CRITICAL **: 19:20:22.799: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
** Message: 19:20:22.801: PRIME: Requires offloading
** Message: 19:20:22.801: PRIME: is it supported? yes
** Message: 19:20:22.837: PRIME: Usage: /usr/bin/prime-select nvidia|intel|on-demand|query
** Message: 19:20:22.837: PRIME: on-demand mode: "1"
** Message: 19:20:22.837: PRIME: is "on-demand" mode supported? yes
在打开的弹出窗口中选择“NVIDIA On-Demand”选项
以下是一些系统信息
$ uname -a
Linux legion 5.4.0-135-generic #152-Ubuntu SMP Wed Nov 23 20:19:22 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.5 LTS
Release: 20.04
Codename: focal
$ echo $XDG_SESSION_TYPE
x11
$ mokutil --sb-state
EFI variables are not supported on this system
$ test -d /sys/firmware/efi && echo efi || echo "Legacy(bios)"
Legacy(bios)
$ dkms status
nvidia, 515.86.01, 5.4.0-135-generic, x86_64: installed
$ lsmod | grep nvidia
nvidia_uvm 1163264 0
nvidia_drm 61440 0
nvidia_modeset 1146880 1 nvidia_drm
nvidia 40820736 11 nvidia_uvm,nvidia_modeset
drm_kms_helper 184320 2 nvidia_drm,i915
drm 495616 15 drm_kms_helper,nvidia,nvidia_drm,i915
$ sudo lshw -c video
*-display
description: VGA compatible controller
product: GP106M [GeForce GTX 1060 Mobile]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:138 memory:a3000000-a3ffffff memory:90000000-9fffffff memory:a0000000-a1ffffff ioport:4000(size=128) memory:a4080000-a40fffff
*-display
description: VGA compatible controller
product: HD Graphics 630
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:135 memory:a2000000-a2ffffff memory:b0000000-bfffffff ioport:5000(size=64) memory:c0000-dffff
$ lspci -k | grep -A 2 -E "(VGA|3D)"
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04)
Subsystem: Lenovo HD Graphics 630
Kernel driver in use: i915
--
01:00.0 VGA compatible controller: NVIDIA Corporation GP106M [GeForce GTX 1060 Mobile] (rev a1)
Subsystem: Lenovo GeForce GTX 1060 Max-Q 3GB
Kernel driver in use: nvidia
$ nvidia-smi
Mon Dec 19 19:23:22 2022
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 515.86.01 Driver Version: 515.86.01 CUDA Version: 11.7 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ... Off | 00000000:01:00.0 Off | N/A |
| N/A 42C P8 4W / N/A | 2MiB / 3072MiB | 0% Default |
| | | N/A |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| No running processes found |
+-----------------------------------------------------------------------------+
尝试重新安装 nvidia-driver-460 - 没有帮助。
另一个症状 - VLC 也停止工作（通过终端打开并尝试播放 mkv/mp4）
$ vlc
VLC media player 3.0.9.2 Vetinari (revision 3.0.9.2-0-gd4c1aefe4d)
[00005591dce9a670] main libvlc: Running vlc with the default interface. Use 'cvlc' to use vlc without interface.
[00005591dcf38080] main playlist: playlist is empty
[00005591dcf6ef00] main audio output error: too low audio sample frequency (0)
[00007f8954d05160] main decoder error: failed to create audio output
[00005591dcf6ef00] vlcpulse audio output error: digital pass-through stream connection failure: Not supported
[00005591dcf6ef00] main audio output error: module not functional
[00007f8954d05160] main decoder error: failed to create audio output
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
Killed
但是 Parole media Player 可以正常工作，ffmpeg 也可以正常工作
答案1
- 假设您没有使用从 nvidia 网页下载的任何东西（通过运行带有附加 <space> 的安装程序来删除任何此类内容
--uninstall） - 按下 Win 键，开始输入
software，然后会出现一个粉红色的图标；单击它。 - 查找
Additional drivers（顶部的标签）并单击它。 - 应该有一组可用的 nvidia 驱动程序版本。在未选择的版本左侧打勾。
- 等待它完成，然后重新启动并查看是否运行良好。
现在注意（1）：我认为改变驱动程序确实会清除之前的内容。如果没有，则需要手动清除。直到您全部删除后，
才能完成此操作。PACKAGENAME 至少是第二列中的一项 ...即仍安装的 nvidia 软件包。$ sudo apt purge PACKAGENAME
dpkg --list | grep -E '^ii.*nvidia.*'
笔记2）： $ nvidia-smi通常不需要sudo(?)