I fixed the UART assignment for ttyS0 with # setserial /dev/ttyS0 UART 16550A and now my modem's TR signal is high as desired. My question, am I condemned to manually editing the grub.conf file after every kernel update or is their a way to configure the system so that I get access to ttyS0 with the grub entries as distributed via yum? Sincerely, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos