k, let's try to keep pushing for 1.18 first
** Changed in: modemmanager (Ubuntu)
Importance: Undecided => Low
** Changed in: modemmanager (Ubuntu)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1978057
Title:
[SRU] Support WWAN "type" attribute for 5.15 or 5.14-oem kernel
Status in modemmanager package in Ubuntu:
Fix Released
Bug description:
[Impact]
On 20.04.4, with modemmanager 1.16.6-2, the WWAN could be recognized
correctly.
With the new rules, the modem devices could be recognized correctly. And also
could avoid wrong command for other protocols, like send 'AT' to wwan0mbim.
[Where problems could occur]
It's just a udev rules, no harm to the system.
[Fix]
https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/commit/1a5e0609dce59c0a49a8698f0e8cb198483124c8
udev: Match WWAN "type" attribute instead of device name
Recent changes in the WWAN framework in the kernel changed the WWAN
port names from e.g. "wwan0p1AT" and "wwan0p2QMI" to "wwan0at0" and
"wwan0qmi0" [1, 2]. This means that the udev rules no longer match
since AT/QMI are now lower-case and no longer at the end of the name.
However, recently additionally a "type" sysfs attribute was added
for all WWAN ports [3], which makes it much more reliable to match
the WWAN port names without relying on their exact device name.
Add some additional udev rules to apply the port hints based on the
"type" sysfs attributes. This fixes the port enumeration on newer
Linux kernels that include the aforementioned commits.
Note that we still need to keep the old udev rules for now since
Linux 5.13 does not have the "type" attribute yet.
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=392c26f7f133b9f09e5f58db1ce6ef4b3b4df49f
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f458709ff40b0d992fec496952f79c7820dd3fde
[3]:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=b3e22e10fdda8e7be3830289a4a63ae8b88d450c
(cherry picked from commit 4282c8d8)
[Test]
With new rule, like Fibcomm L860 (8086:7560) could be recognized and show
'Mobile Broadband' item in the top-right menu.
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