[Bug 1774731] Re: Missing "/sys/module/dummy/parameters/" subdir on dummy module

Any news about this problem?!

** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1774731

Title:
Missing "/sys/module/dummy/parameters/" subdir on dummy module

Status in linux package in Ubuntu:
Confirmed

Bug description:
Hello,

On Ubuntu 18.04 (fully updated), the following configuration does not
work:

File /etc/modprobe.d/dummy.conf with:

----
options dummy numdummies=12
----

File /etc/modules

----
dummy
----

The module "dummy" is loaded but, there is no 12 dummies NIC cards!

The manual workaround is:

---
rmmod dummy
modprobe dummy numdummies=12
---

I talked on IRC and someone pointed that the dummy module is missing
its "/sys/module/dummy/parameters/" subdir, so, I'm filling this bug
report now.

Cheers!
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-22-generic.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer'
DistroRelease: Ubuntu 18.04
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
Package: linux (not installed)
ProcEnviron:
TERM=screen
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 qxldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-22-generic root=UUID=26330e04-49ed-11e8-9cae-525400a53f07 ro
ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
RelatedPackageVersions:
linux-restricted-modules-4.15.0-22-generic N/A
linux-backports-modules-4.15.0-22-generic N/A
linux-firmware 1.173.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic uec-images
Uname: Linux 4.15.0-22-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.10.2-1ubuntu1
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-i440fx-bionic
dmi.modalias: dmi:bvnSeaBIOS:bvr1.10.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-bionic:cvnQEMU:ct1:cvrpc-i440fx-bionic:
dmi.product.name: Standard PC (i440FX + PIIX, 1996)
dmi.product.version: pc-i440fx-bionic
dmi.sys.vendor: QEMU

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