> > it only seems to happen with the single-stack IP types (both IPv4- and > IPv6-only), never with dual-stack.
>From what I've seen many carriers (and subsets of towers) don't support every IP type, especially IPv6. On Tue, Sep 4, 2018 at 6:17 AM Aleksander Morgado <aleksan...@aleksander.es> wrote: > Hey, > > > > > I have an 'HP lt4120 Snapdragon X5 LTE' WWAN module running firmware > > revision 'T77W595.F0.0.0.6.6.GC.029 1 [Jul 06 2016 23:00:00' (latest > > available on HP's web site). > > > > It tends to frequently get to a state where MM fails to establish single- > > stack connections while in LTE coverage. I'm pretty sure it's not a > > network or subscription problem as the problem is there in different > > PLMNs and SIM cards from different operators, and it works fine using > > other UEs like Android and Jolla phones. I've set up the 3GPP profile > > like so: > > > > $ sudo qmicli -p -d /dev/cdc-wdm0 --wds-get-profile-list=3gpp > > Profile list retrieved: > > [1] 3gpp - profile1 > > APN: 'telenor.smart' > > PDP type: 'ipv6' > > Auth: 'none' > > > > Using qmicli it seems to connect without problems: > > > > $ sudo qmicli -p -d /dev/cdc-wdm0 --wds-start-network=3gpp-profile=1 > > [/dev/cdc-wdm0] Network started > > Packet data handle: '68385664' > > > > But MM fails (and so does NM): > > > > $ sudo /usr/bin/mmcli -m 0 > --simple-connect=apn=telenor.smart,ip-type=ipv6 > > error: couldn't connect the modem: 'Timeout was reached' > > > > This results in the following being logged: > > > > <info> Simple connect started... > > <info> Simple connect state (4/8): Wait to get fully enabled > > <info> Simple connect state (5/8): Register > > <info> Simple connect state (6/8): Bearer > > <info> Simple connect state (7/8): Connect > > <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed > (registered -> connecting) > > <info> Modem /org/freedesktop/ModemManager1/Modem/0: state changed > (connecting -> registered) > > [/dev/cdc-wdm0] No transaction matched in received message > > [/dev/cdc-wdm0] Received unexpected message (translated)... > >>>>>>> Header: > >>>>>>> length = 76 > >>>>>>> type = command-done (0x80000003) > >>>>>>> transaction = 31 > >>>>>>> Fragment header: > >>>>>>> total = 1 > >>>>>>> current = 0 > >>>>>>> Contents: > >>>>>>> status error = 'Failure' (0x00000002) > >>>>>>> service = 'basic-connect' > (a289cc33-bcbb-8b4f-b6b0-133ec2aae6df) > >>>>>>> cid = 'packet-service' (0x0000000a) > > > > It only happens in LTE coverage, UMTS and GSM has no issues at all. Also > > it only seems to happen with the single-stack IP types (both IPv4- and > > IPv6-only), never with dual-stack. > > > > Anyone seen something like this before and have any suggestion on how to > > avoid/prevent it? > > > > No idea, sorry. > > > If I power down my laptop completely and bring it back up, that might > > might shake it loose for a while, but my test scripts that iterates > > through all PLMNs and all RATs and tries to connect in each using all > > three IP types will usually get it back in the stuck state again. > > > > Is there a way to fully power cycle the WWAN module without > > powercycling the entire laptop, by the way? > > > > $ sudo mmcli -m 0 --reset > > -- > Aleksander > https://aleksander.es > _______________________________________________ > ModemManager-devel mailing list > ModemManager-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/modemmanager-devel >
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