Failed to restore initial working directory

[zeeshanali1993]

Unable to execute this on my Thinkpad T460s

sudo validity-sensors-tools.initializer                                                                                     ✔ 
[sudo] password for user: 
Found device <DEVICE ID 138a:0090 on Bus 001 Address 004>
Downloading https://download.lenovo.com/pccbbs/mobiles/n1cgn08w.exe to extract 6_07f_Lenovo.xpfwext
Extracting "Synaptics Metallica MOH Touch Fingerprint Reader Driver" - setup data version 5.5.7
 - "app/WBF_Drivers/6_07f_Lenovo.xpfwext"
Done.
find: Failed to restore initial working directory: /home/user: Permission denied
Traceback (most recent call last):
  File "/snap/validity-sensors-tools/65/vfs-tools/validity-sensors-tools.py", line 329, in <module>
    fwpath = vfs_tools.download_and_extract_fw(fwdir,
  File "/snap/validity-sensors-tools/65/vfs-tools/validity-sensors-tools.py", line 163, in download_and_extract_fw
    fwpath = subprocess.check_output([
  File "/usr/lib/python3.8/subprocess.py", line 415, in check_output
    return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
  File "/usr/lib/python3.8/subprocess.py", line 516, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['find', '/tmp/tmpxujopoha', '-name', '6_07f_Lenovo.xpfwext']' returned non-zero exit status 1.

[jprikner]

You need to change your current working directory to /tmp before you execute the initializer command, then it should work. Apparently, despite running the command with sudo, find executes itself as some other user and expects to be run inside the /tmp directory, otherwise will fail due to the permission issue.

[JPapir]

Thanks, I had the same problem, and this indeed helped.