Hello Aleksander,
please find my answers below.
Il giorno mar, 16/06/2020 alle 09.29 +0200, Aleksander Morgado ha
scritto:
> Hey Giuseppe,
>
> > I am not at all an expert of modem manager but I hope this is the right
> > place where to post my question.
> >
> > I am trying to use a WWAN module on a laptop. The module is named "Dell
> > Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card" (a.k.a. Sierra
> > Wireless AirPrime 7W5P6).
> >
>
> What distro and distro version are you using?
I am using a Debian testing machine with amd64 architecture:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:
Debian GNU/Linux bullseye/sid
Release: testing
Codename: bullsey
e
> > It is listed like this:
> >
> > $ lsusb --verbose -d 413c: | head -17
> >
> > Bus 003 Device 003: ID 413c:81a3 Dell Computer Corp.
> > Device Descriptor:
> > bLength 18
> > bDescriptorType 1
> > bcdUSB 2.00
> > bDeviceClass 0
> > bDeviceSubClass 0
> > bDeviceProtocol 0
> > bMaxPacketSize0 64
> > idVendor 0x413c Dell Computer Corp.
> > idProduct 0x81a3
> > bcdDevice 0.06
> > iManufacturer 1 Sierra Wireless, Incorporated
> > iProduct 2 Dell Wireless 5570 HSPA+ (42Mbps) Mobile
> > Broadband Card
> > iSerial 3
> > bNumConfigurations 2
> >
> >
> > The card is not used by modemmanager, in fact I does write:
> >
>
> What version of ModemManager are you using?
$ dpkg -l modemmanager
[...]
ii modemmanager 1.12.10-0.2 amd64 D-Bus service for managing modems
> > ModemManager[7979]: <debug> [1592288162.080686] (usbmisc/cdc-wdm0):
> > adding device at sysfs path:
> > /sys/devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-
> > 1.6:2.12/usbmisc/cdc-wdm0
> > ModemManager[7979]: <debug> [1592288162.080759] (usbmisc/cdc-wdm0):
> > port not candidate
> >
>
> This happens when the cdc-wdm port doesn't have the ID_MM_CANDIDATE
> udev tag. Does your system have the
> /lib/udev/rules.d/80-mm-candidate.rules file? What are its contents?
> Does your system have udev daemon running?
yes, the file is present
$ grep '^[^#]' /lib/udev/rules.d/80-mm-candidate.rules
ACTION!="add|change|move|bind", GOTO="mm_candidate_end"
KERNEL=="rfcomm*", DEVPATH=="*/virtual/*", GOTO="mm_candidate_end"
SUBSYSTEM=="tty", ENV{ID_MM_CANDIDATE}="1"
SUBSYSTEM=="net", ENV{ID_MM_CANDIDATE}="1"
KERNEL=="cdc-wdm*", SUBSYSTEM=="usb", ENV{ID_MM_CANDIDATE}="1"
KERNEL=="cdc-wdm*", SUBSYSTEM=="usbmisc", ENV{ID_MM_CANDIDATE}="1"
LABEL="mm_candidate_end"
sure, udev is running
$ systemctl status systemd-udevd.service
● systemd-udevd.service - udev Kernel Device Manager
Loaded: loaded (/lib/systemd/system/systemd-udevd.service; static; vendor
preset: enabled)
Active: active (running) since Tue 2020-06-16 07:51:02 CEST; 7h ago
TriggeredBy: ● systemd-udevd-control.socket
● systemd-udevd-kernel.socket
Docs: man:systemd-udevd.service(8)
man:udev(7)
Main PID: 466 (systemd-udevd)
Status: "Processing with 32 children at max"
Tasks: 1
Memory: 33.0M
CGroup: /system.slice/systemd-udevd.service
└─466 /lib/systemd/systemd-udevd
but it seems the ID_MM_CANDIDATE variable isn't there.
$ udevadm info /dev/cdc-wdm0
P: /devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
N: cdc-wdm0
L: 0
E:
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
E: DEVNAME=/dev/cdc-wdm0
E: MAJOR=180
E: MINOR=0
E: SUBSYSTEM=usbmisc
Even reinserting the device, the tag is not attached:
$ udevadm trigger --verbose --action=remove /dev/cdc-wdm0
/sys/devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
$ udevadm trigger --verbose --action=add /dev/cdc-wdm0
/sys/devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
$ udevadm info /dev/cdc-wdm0
P: /devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
N: cdc-wdm0
L: 0
E:
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.6/3-1.6:2.12/usbmisc/cdc-wdm0
E: DEVNAME=/dev/cdc-wdm0
E: MAJOR=180
E: MINOR=0
E: SUBSYSTEM=usbmisc
Bye,
Giuseppe
_______________________________________________
ModemManager-devel mailing list
ModemManager-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel
