Red Hat Bugzilla – Bug 676365
Verizon UMW190 modem recognizes as GSM (not CDMA)
Last modified: 2013-03-12 16:05:54 EDT
Description of problem:
This modem has both GSM and CMDA capability. This is a ModemManager bug already fixed upstream. ModemManager can't handle Pantech dual-radio modems properly, and only tolerates the GSM portion which will not operate in the US.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Plug in UMW190 modem
2. Eject the CD device it creates
NetworkManager/ModemManager sets up device as GSM and it can't be switched to CDMA
The modem should allow user to override and choose CDMA setup, or detect device properly.
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
Created attachment 499663 [details]
Can this be considered for 6.2 or be marked for 6.3?
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.
This request was erroneously removed from consideration in Red Hat Enterprise Linux 6.4, which is currently under development. This request will be evaluated for inclusion in Red Hat Enterprise Linux 6.4.
Also, proper support for this device would also require adding its IDs to the 'qcaux' driver in the kernel, so we can get signal strength and registration state while the device is connected using PPP on the primary TTY.
Created attachment 599465 [details]
Allow users to prefer CDMA mode on multimode devices via /etc/mm-multimode-prefer-cdma
Touching /etc/mm-multimode-prefer-cdma will make the modems be recognized as CDMA devices instead of GSM.
Hah, ok, for the RHEL6 kernel qcaux doesn't exist. I suppose we can add the USB IDs for these devices to option, but backporting qcaux might be a better choice in the long run. But that's for the kernel team to decide.