USB Modems not working after MFP drivers installed on NLD/SLED9
The CDC_ACM kernel module on NLD/SLED9 crashes both during Linux shutdown and if the connected e‑STUDIO MFP is disconnected/powered-off. To avoid this the CDC_ACM module is disabled during the installation of the e‑STUDIO drivers in NLD/SLED9.
A side effect of disabling the CDC_ACM kernel module is that USB modems connected to the same PC will no longer function. If you need to use a USB modem connected to a PC running NLD/SLED9 where the e‑STUDIO MFP CUPS printer and SANE scanner drivers are also installed then open a shell session (terminal) and enter the following command as root user:
/usr/sbin/studio_cdc_acm enable
Then reboot NLD/SLED9.
If you do re‑enable the CDC_ACM kernel module remember:
- Do not power‑off or disconnect the e‑STUDIO MFP while NLD/SLED9 is running on the PC to which the MFP is connected.
- The CDC_ACM module will probably crash during the Linux shutdown process.
