On 01/28/18 20:15, Fred Smith wrote: > On Sun, Jan 28, 2018 at 12:10:29PM -0500, Pete Geenhuizen wrote: >> I'm upgrading from CentOS6 to CentOS 7. >> >> I run 2 weather stations on C6 and have one of them attached to >> ttyS0 which is on the motherboard, and the other to ttyS2 which in >> on an add-on PCI serial card. >> >> I'm migrating the weather stations another host running C7 which has >> a similar hardware configuration. When I connect the weather >> station to ttyS0 everything works fine, but when I try to use ttyS1 >> or ttyS2 nothing happens. >> >> The OS identifies all 3 ports, and I've already tried several >> different serial cards several of the slots on the motherboard all >> have yielded the same result. I've even gone so far as to try to >> get this to work on another computer running C7 with the same >> result, success on ttyS0, but nothing nothing when I try ttyS1 or >> ttyS2. >> >> I'm thinking that this might be a driver issue, but having used >> several different cards I'm just not sure. >> >> Any assistance would be greatly appreciated. >> >> Pete > Wondering if you've tried poking at them with 'setserial'? > Thanks for the suggestion. I looked at them with setserial, but I have no familiarity with the program to know what to change. setserial -ag /dev/ttyS* /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal skip_test /dev/ttyS1, Line 1, UART: 16550A, Port: 0x8000, IRQ: 17 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: none Flags: spd_normal skip_test /dev/ttyS2, Line 2, UART: 16550A, Port: 0x8400, IRQ: 17 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: none Flags: spd_normal skip_test /dev/ttyS3, Line 3, UART: unknown, Port: 0x02e8, IRQ: 3 Baud_base: 115200, close_delay: 50, divisor: 0 closing_wait: 3000 Flags: spd_normal I changed the closing_wait: on ttyS1 to match ttyS0, but that didn't do anything, so there must be more to it. Pete -- Unencumbered by the thought process. -- Click and Clack the Tappet brothers -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.