Hi, I have an Intel Atom E3930 system, /dev/ttyS6 device node is no longer exposed to the userspace starting from 4.15+ Ubuntu kernels.
BTW, it works fine on Debian kernels, for example on 4.16.0-2-amd64 I've tried supposed linux-oem-4.15.0-1006.9 but device node is still missing, although appears in /proc/tty/driver/serial $ uname -r 4.15.0-1006-oem $ sudo cat /proc/tty/driver/serial | grep -v unknown serinfo:1.0 driver revision: 4: uart:16550A mmio:0x7FFFF16000 irq:4 tx:0 rx:0 5: uart:16550A mmio:0x7FFFF14000 irq:5 tx:0 rx:0 RTS|CTS|DTR 6: uart:16550A mmio:0x280000000 irq:6 tx:0 rx:0 RTS|DTR 7: uart:16550A mmio:0x7FFFF12000 irq:7 tx:0 rx:0 CTS $ stat /dev/ttyS6 stat: cannot stat '/dev/ttyS6': No such file or directory -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1769610 Title: Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem/+bug/1769610/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
