Support for multi LANG enviroment (XPS 15 7950, Ubuntu 19.10)

[jancidlo]

Hello

I'm using Ubuntu 19.10 with latest updates on Dell XPS 15 7950.
Software icc-brightness is working well on default EN language.
After I changed language to CZ, software didn't work and I received an error message:

Traceback (most recent call last):
File "/usr/local/bin/icc-brightness", line 157, in
main()
File "/usr/local/bin/icc-brightness", line 132, in main
icc_brightness_apply()
File "/usr/local/bin/icc-brightness", line 108, in icc_brightness_apply
icc_brightness(brightness, max_brightness)
File "/usr/local/bin/icc-brightness", line 85, in icc_brightness
subprocess.check_output(['colormgr', 'import-profile', icc_filepath])
File "/usr/lib/python3.7/subprocess.py", line 411, in check_output
**kwargs).stdout
File "/usr/lib/python3.7/subprocess.py", line 512, in run
output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['colormgr', 'import-profile', '/tmp/brightness_78420_120000.icc']' returned non-zero exit status 1.

Here is filtered print of set command of working environment:
LANG=en_US.UTF-8
LANGUAGE=en
LC_ADDRESS=cs_CZ.UTF-8
LC_IDENTIFICATION=cs_CZ.UTF-8
LC_MEASUREMENT=cs_CZ.UTF-8
LC_MONETARY=cs_CZ.UTF-8
LC_NAME=cs_CZ.UTF-8
LC_NUMERIC=cs_CZ.UTF-8
LC_PAPER=cs_CZ.UTF-8
LC_TELEPHONE=cs_CZ.UTF-8
LC_TIME=cs_CZ.UTF-8

and print of environment that doesn't work:
LANG=cs_CZ.UTF-8
LANGUAGE=cs:en
LC_ADDRESS=cs_CZ.UTF-8
LC_IDENTIFICATION=cs_CZ.UTF-8
LC_MEASUREMENT=cs_CZ.UTF-8
LC_MONETARY=cs_CZ.UTF-8
LC_NAME=cs_CZ.UTF-8
LC_NUMERIC=cs_CZ.UTF-8
LC_PAPER=cs_CZ.UTF-8
LC_TELEPHONE=cs_CZ.UTF-8
LC_TIME=cs_CZ.UTF-8

When I switch language from CZ back to EN, software works well again.

Thank you for your help,
Jindrich