Hey there. Just wanted to say that i'm seeing this on Bionic as well, on one machine with kernel 4.15.0-20-generic and also on a second one with kernel 4.15.0-22-generic. The former obviously hasn't been updated in a little bit. I didn't notice the problem until just now so i can't say if there was ever a time when it was working before.
I *can* say that i have several *Xenial* machines running 4.15.0-15-generic and those don't exhibit the problem. (I don't have `dummy` in my module config on those, but a boot script runs `modprobe dummy` and that automatically creates the interface, which i believe is the expected default behaviour.) On Bionic, it doesn't create the interface unless i manually specify the `numdummies=<num>` option to `modprobe` (as the other reporters have said) or unless i have `ip link add` load the module and create it for me (naturally). I did try adding `dummy` to /etc/modules and `options dummy numdummies=1` to /etc/modprobe.d/dummy-options.conf. systemd-modules-load says that it inserted the module, and i can confirm that with `lsmod`, but, again, it doesn't actually create the interface any more. I can also confirm that, after the module is loaded, i'm missing /sys/module/dummy/parameters — whatever that indicates. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1774731 Title: Missing "/sys/module/dummy/parameters/" subdir on dummy module To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774731/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
