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Message #09494
[Bug 2071877] Re: Support sending AT commnad by mbim-cli for Compal WWAN module
comment from debcrafters channel and SRU reviewr [1].
It is not a qualified SRU candidate because the required new package is
not in the Ubuntu archive to support the full experience for the end
user.
[1] https://chat.canonical.com/canonical/pl/jxpm6nn3j3bjxx55fhmoc1d7jc
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https://bugs.launchpad.net/bugs/2071877
Title:
Support sending AT commnad by mbim-cli for Compal WWAN module
Status in OEM Priority Project:
New
Status in libmbim package in Ubuntu:
Fix Released
Status in libmbim source package in Noble:
Incomplete
Bug description:
[ Impact ]
* Add a service to make mbim-cli be able to send AT command to Compal
WWAN module DW5826e through mbimcli
[ Test Plan ]
* On the platform with Compal SDX12 WWAN module with ID:
usb:v413Cp8217
usb:v413Cp8218
* Open terminal Ctrl + Alt + t
* Try command $ sudo mbimcli -d /dev/cdc-wdm0 -p --compal-query-at-command=AT
* Output:
AT
OK
* Without the patch it will show
error: Unknown options --compal-query-at-command=AT
[ Where problems could occur ]
* It adds new mbim service for supporting Compal module, there is no
existing service modification.
* The mbim relies on transaction task to handle sending AT command to
the modem. It will send the command asynchronously, if there is a bug
or system issue in GLib, the AT command may not send to modem
successfully.
[ Other Info ]
* Upstream commit: https://gitlab.freedesktop.org/mobile-
broadband/libmbim/-/commit/c275e4f1422291b933464880c37bd9cfd14b5bca
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