Closed issue by abhocetabhac on void-packages repository

https://github.com/void-linux/void-packages/issues/31901

Description:
acpi_call-dkms-1.2.0.3

In script '/usr/share/acpi_call/turn_off_gpu.sh', the line

result=$(cat /proc/acpi/call)

causes a warning that spoils the functioning: "bash: line 41: warning: command substitution: ignored null byte in input¨.

The following amendment solves the issue:

result=$(cat /proc/acpi/call | tr '\0' '\n')