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Troubleshooting
Linux
agent installations

The table below outlines the actions you can take to troubleshoot
Linux
agent installations.
Task or error
Action
Start or stop the agent service
Use the following commands to start or stop the
Cylance
service on a
Linux
device:
  • To start the
    Cylance
    service:
    systemctl start cylancesvc
  • To stop the
    Cylance
    service:
    systemctl stop cylancesvc
Verify whether kernel drivers are loaded
To verify whether the kernel drivers are loaded, enter the following command:
lsmod | grep CyProtectDrv
If the kernel modules are loaded, the command should output something similar to the following:
CyProtectDrv 210706 0CyProtectDrvOpen 16384 1 CyProtectDrv
If the kernel modules are not loaded, no output is returned.
Load and unload the kernel drivers
On
CylancePROTECT Desktop
Linux
agent 2.1.1590 and later, there are two drivers that are loaded and unloaded together:
CyProtectDrv
and
CyProtectDrvOpen
. On earlier versions of the agent, only the
CyProtectDrv
driver is loaded.
To load the kernel drivers, enter one of the following commands:
  • For
    SUSE
    Linux
    distributions:
    modprobe --allow-unsupported cyprotect
    If you don't want to keep using the
    --allow-unsupported
    flag, edit
    /etc/modprobe.d/10-unsupported-modules.conf
    and change 'allow_unsupported_modules' to '1'.
  • For all other
    Linux
    distributions:
    modprobe cyprotect
Start the
Linux
UI manually
If the agent UI did not launch automatically after installation, see Start the UI manually for more information.
Error: Multilib version problems found
If the "Error: Multilib version problems found" occurs when installing a package on a device, see Error: Multilib version problems found for more information.