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[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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