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Razer Core X eGPU 在 Thinkpad + Lubuntu 18.04 中无法工作

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Razer Core X eGPU 在 Thinkpad + Lubuntu 18.04 中无法工作

我刚刚第一次将带有 eGPU 的 Razor Core X 连接到我的 Thinkpad。风扇在旋转，但nvidia-smi没有显示 eGPU。

我能做些什么？

答案1

首先，检查dmesg | tail -n 200。它可能会显示如下内容：

[   74.959198] thunderbolt 0000:06:00.0: current switch config:
[   74.959201] thunderbolt 0000:06:00.0:  Switch: 8086:15da (Revision: 6, TB Version: 2)
[   74.959202] thunderbolt 0000:06:00.0:   Max Port Number: 11
[   74.959203] thunderbolt 0000:06:00.0:   Config:
[   74.959204] thunderbolt 0000:06:00.0:    Upstream Port Number: 1 Depth: 1 Route String: 0x3 Enabled: 1, PlugEventsDelay: 254ms
[   74.959205] thunderbolt 0000:06:00.0:    unknown1: 0x0 unknown4: 0x0
[   74.999560] thunderbolt 0000:06:00.0: 3: reading drom (length: 0x56)
[   75.301575] thunderbolt 0000:06:00.0: 3: uid: 0x1279cc9b0ba8400
[   75.301686] thunderbolt 0000:06:00.0:  Port 0: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[   75.301689] thunderbolt 0000:06:00.0:   Max hop id (in/out): 7/7
[   75.301692] thunderbolt 0000:06:00.0:   Max counters: 8
[   75.301694] thunderbolt 0000:06:00.0:   NFC Credits: 0x800000
[   75.302174] thunderbolt 0000:06:00.0:  Port 1: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[   75.302178] thunderbolt 0000:06:00.0:   Max hop id (in/out): 15/15
[   75.302180] thunderbolt 0000:06:00.0:   Max counters: 16
[   75.302183] thunderbolt 0000:06:00.0:   NFC Credits: 0x7800000
[   75.302681] thunderbolt 0000:06:00.0:  Port 2: 8086:15d3 (Revision: 6, TB Version: 1, Type: Port (0x1))
[   75.302683] thunderbolt 0000:06:00.0:   Max hop id (in/out): 15/15
[   75.302685] thunderbolt 0000:06:00.0:   Max counters: 16
[   75.302687] thunderbolt 0000:06:00.0:   NFC Credits: 0x0
[   75.302689] thunderbolt 0000:06:00.0: 3:3: disabled by eeprom
[   75.302691] thunderbolt 0000:06:00.0: 3:4: disabled by eeprom
[   75.302692] thunderbolt 0000:06:00.0: 3:5: disabled by eeprom
[   75.302806] thunderbolt 0000:06:00.0:  Port 6: 8086:15d3 (Revision: 6, TB Version: 1, Type: PCIe (0x100102))
[   75.302808] thunderbolt 0000:06:00.0:   Max hop id (in/out): 8/8
[   75.302809] thunderbolt 0000:06:00.0:   Max counters: 2
[   75.302811] thunderbolt 0000:06:00.0:   NFC Credits: 0x800000
[   75.302960] thunderbolt 0000:06:00.0:  Port 7: 8086:15d3 (Revision: 6, TB Version: 1, Type: PCIe (0x100101))
[   75.302962] thunderbolt 0000:06:00.0:   Max hop id (in/out): 8/8
[   75.302964] thunderbolt 0000:06:00.0:   Max counters: 2
[   75.302966] thunderbolt 0000:06:00.0:   NFC Credits: 0x800000
[   75.302967] thunderbolt 0000:06:00.0: 3:8: disabled by eeprom
[   75.302969] thunderbolt 0000:06:00.0: 3:9: disabled by eeprom
[   75.302971] thunderbolt 0000:06:00.0: 3:a: disabled by eeprom
[   75.302973] thunderbolt 0000:06:00.0: 3:b: disabled by eeprom

这表明存在权限/安全问题。

让我们安装 Thunderbolt 管理工具以便我们可以修复它：

sudo apt install thunderbolt-tools

现在，让我们检查一下 Thunderbolt 是否能够看到该底座：

root@mymachine:~# tbtadm devices
0-4 Razer Core X  non-authorized  not in ACL

是的！

现在，让我们授权码头：

tbtadm approve 0-4

由此可见：

Authorizing "/sys/bus/thunderbolt/devices/0-4"
Already in ACL
system:5 Input/output error

拔下并重新插入底座并dmesg再次查看显示：

[11187.232181] thunderbolt 0000:06:00.0: PCIe tunnel creation failed

因此我们再次看一下 Thunderbolt：

root@mymachine:~# tbtadm devices
0-4 Razer Core X  non-authorized  in ACL

事实上，我们可以看到基座已连接：

root@mymachine:~# tbtadm acl
0XXXXXb0-XXXX-XXXX-ffff-ffffffffffff  Razer Core X  connected

让我们尝试手动授权：

root@mymachine:~# echo '1' > /sys/bus/thunderbolt/devices/0-4/authorized 
-bash: echo: write error: Input/output error

此时，我怀疑问题可能出在 BIOS 上。因此，重新启动，调出 BIOS 设置。它位于“用户授权”中，但让我们使用核“无安全性”选项（可能有助于弄清楚如何稍后再次锁定）： BIOS Thunderbolt 设置

此时，重新启动机器。

在插入 GPU 之前，请确保已加载 Nvidia 驱动程序：

sudo modprobe nvidia-uvm

并尝试查找 GPU：

nvidia-smi

成功！

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.87.00    Driver Version: 418.87.00    CUDA Version: 10.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce RTX 208...  Off  | 00000000:3D:00.0 Off |                  N/A |
| 15%   36C    P0     1W / 250W |      0MiB / 10989MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+

+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID   Type   Process name                             Usage      |
|=============================================================================|
|  No running processes found                                                 |
+-----------------------------------------------------------------------------+

根据这个文件BIOS 设置含义：

  • 没有安全性：允许 Thunderbolt 设备自动连接。
  • 用户授权：允许用户授权后连接Thunderbolt设备。
  • 安全连接：允许使用已由用户批准的已保存密钥连接 Thunderbolt 设备。
  • 显示端口和 USB：仅允许连接显示输出和 USB 设备。不允许连接 Thunderbolt 设备

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