Public bug reported:
ModemManager does not support Cinterion TX62-W-C. This bug is a request
to backport 2 patches from upstrea to noble, and 1 to resolute to ensure
that the modem is supported by ModemManager.
On noble/UC24, there are two issues in the cinterion plugin that need
addressing:
- The modem returns to AT^SXRAT a response containing spaces (e.g. "^SXRAT:
(7,8,10), (7,8)"). The regex in MM 1.23.4 does not contemplate the possibility
and the modem initialization fails with an error like
"ERROR:../src/src/plugins/cinterion/mm-broadband-modem-cinterion.c:1819:sxrat_load_supported_modes_ready:
assertion failed: (self->priv->sxrat_supported_rat)"
A patch for this has been merged to upstream with commit
6b6997362b5530708725c16c80ef36cd21609f20 and first released in 1.25.1.
The patch (slimmed down for compatibility with 1.23.4) is attached to this
bug as 0002-modem-helpers-cinterion-allow-spaces-in-SXRAT-test-r.patch.
- The modem exposes usb_iface_num 0x05, that is not present in the cinterion
plugin. This denies registration to the network with error
"ModemManager[70166]: <wrn> [1774009578.409495] [modem0/bearer0] connection
attempt #1 failed: Unsupported WWAN interface: unexpected interface number:
0x05"
A patch has been merged to upstream with commit
49fb75cd945643c3d1f7bededb5e2cc854bc3146, and not yet released.
The patch is attached to this bug as
0003-cinterion-add-USB-interface-number-0x05-for-TX62-mod.patch
For resolute/UC26, the first issue will be solved as 1.25.95 includes the regex
fix.
The second patch has only been merged this week, so it will need to be
backported there too.
** Affects: modemmanager (Ubuntu)
Importance: Undecided
Status: New
** Patch added: "Patch for regex fix"
https://bugs.launchpad.net/bugs/2146420/+attachment/5955928/+files/0002-modem-helpers-cinterion-allow-spaces-in-SXRAT-test-r.patch
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https://bugs.launchpad.net/bugs/2146420
Title:
ModemManager does not support Cinterion TX62-W-C modem
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