Unexpected Mode Preference when using --nas-set-system-selection-preference

Dan Williams dcbw at redhat.com
Tue Apr 14 09:11:58 PDT 2015


On Mon, 2015-04-13 at 22:43 +0200, Markus Gothe wrote:
> There is something wrong with your modem... Sorry to say. The Verizon USB551L doesnt support neither GSM nor UMTS. :-(

Actually it does, it's a Gobi-based device that supports all the
technologies on a bunch of bands, kinda like the Pantech UML290.  I
don't even think it's provider locked by default (like the UML290 was).

[/dev/cdc-wdm1] Successfully got serving system:
	Registration state: 'registered'
	CS: 'attached'
	PS: 'attached'
	Selected network: '3gpp'
	Radio interfaces: '1'
		[0]: 'umts'
	Roaming status: 'off'
	Data service capabilities: '1'
		[0]: 'wcdma'
	Current PLMN:
		MCC: '310'
		MNC: '260'
		Description: 'T-Mobile'
	Roaming indicators: '1'
		[0]: 'off' (umts)

Dan

> There are two known ways to get/set rat...
> 
> The NAS set selection preference methinks is be uses when to choose between CDMA and GSM.
> 
> I will check this up when I have the source code at hand.
> 
> //M
> 
> Den 10 apr 2015 22:10 skrev Garrett Doorenbos <gdoorenbos at yahoo.com>:
> >
> > Hello,
> >  
> > I am using qmicli with a Novatel USB551L modem. When I try to use the --nas-set-system-selection-preference command to set my preference to ‘lte’, I get a ‘DeviceUnsupported’ error. I noticed that if I run the command with the verbose tag, the Mode Preference sent to the modem is ‘gsm, lte, td-scdma’. I think this causes problems since my modem doesn’t support td-scdma (--dms-get-capabilities shows only cdma20001x, evdo, gsm, umts, lte). I also noticed that whatever input I give to --nas-set-system-selection-preference, it seems to OR it with gsm, lte, and td-scdma. Is there a way to get --nas-set-system-selection-preference to only send ‘lte’ for the Mode Preference? I’ve copy/pasted results from my machine below.
> >  
> > Thanks,
> > Garrett
> >
> > -----
> >  
> > sh-4.2# qmicli -d /dev/cdc-wdm0 --dms-get-capabilities
> > [/dev/cdc-wdm0] Device capabilities retrieved:
> >         Max TX channel rate: '5742000'
> >         Max RX channel rate: '7200000'
> >                Data Service: 'simultaneous-cs-ps'
> >                         SIM: 'supported'
> >                    Networks: 'cdma20001x, evdo, gsm, umts, lte'
> > sh-4.2# qmicli -d /dev/cdc-wdm0 --nas-set-system-selection-preference=lte
> > error: couldn't set operating mode: QMI protocol error (25): 'DeviceUnsupported'
> > sh-4.2# qmicli -d /dev/cdc-wdm0 --nas-set-system-selection-preference=lte -v
> > [13 Sep 2000, 03:43:25] [Debug] QMI Device at '/dev/cdc-wdm0' ready
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Assuming service 'nas' is supported...
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Allocating new client ID...
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message...
> > <<<<<< RAW:
> > <<<<<<   length = 16
> > <<<<<<   data   = 01:0F:00:00:00:00:00:01:22:00:04:00:01:01:00:03
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
> > <<<<<< QMUX:
> > <<<<<<   length  = 15
> > <<<<<<   flags   = 0x00
> > <<<<<<   service = "ctl"
> > <<<<<<   client  = 0
> > <<<<<< QMI:
> > <<<<<<   flags       = "none"
> > <<<<<<   transaction = 1
> > <<<<<<   tlv_length  = 4
> > <<<<<<   message     = "Allocate CID" (0x0022)
> > <<<<<< TLV:
> > <<<<<<   type       = "Service" (0x01)
> > <<<<<<   length     = 1
> > <<<<<<   value      = 03
> > <<<<<<   translated = nas
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message...
> > >>>>>> RAW:
> > >>>>>>   length = 24
> > >>>>>>   data   = 01:17:00:80:00:00:01:01:22:00:0C:00:02:04:00:00:00:00:00:01:02:00:03:0A
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message (translated)...
> > >>>>>> QMUX:
> > >>>>>>   length  = 23
> > >>>>>>   flags   = 0x80
> > >>>>>>   service = "ctl"
> > >>>>>>   client  = 0
> > >>>>>> QMI:
> > >>>>>>   flags       = "response"
> > >>>>>>   transaction = 1
> > >>>>>>   tlv_length  = 12
> > >>>>>>   message     = "Allocate CID" (0x0022)
> > >>>>>> TLV:
> > >>>>>>   type       = "Result" (0x02)
> > >>>>>>   length     = 4
> > >>>>>>   value      = 00:00:00:00
> > >>>>>>   translated = SUCCESS
> > >>>>>> TLV:
> > >>>>>>   type       = "Allocation Info" (0x01)
> > >>>>>>   length     = 2
> > >>>>>>   value      = 03:0A
> > >>>>>>   translated = [ service = 'nas' cid = '10' ]
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Registered 'nas' (version unknown) client with ID '10'
> > [13 Sep 2000, 03:43:25] [Debug] Asynchronously setting system selection preference...
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message...
> > <<<<<< RAW:
> > <<<<<<   length = 29
> > <<<<<<   data   = 01:1C:00:00:03:0A:00:01:00:33:00:10:00:19:04:00:00:00:00:00:17:01:00:01:11:02:00:B4:5B
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
> > <<<<<< QMUX:
> > <<<<<<   length  = 28
> > <<<<<<   flags   = 0x00
> > <<<<<<   service = "nas"
> > <<<<<<   client  = 10
> > <<<<<< QMI:
> > <<<<<<   flags       = "none"
> > <<<<<<   transaction = 1
> > <<<<<<   tlv_length  = 16
> > <<<<<<   message     = "Set System Selection Preference" (0x0033)
> > <<<<<< TLV:
> > <<<<<<   type       = "GSM WCDMA Acquisition Order Preference" (0x19)
> > <<<<<<   length     = 4
> > <<<<<<   value      = 00:00:00:00
> > <<<<<<   translated = automatic
> > <<<<<< TLV:
> > <<<<<<   type       = "Change Duration" (0x17)
> > <<<<<<   length     = 1
> > <<<<<<   value      = 01
> > <<<<<<   translated = permanent
> > <<<<<< TLV:
> > <<<<<<   type       = "Mode Preference" (0x11)
> > <<<<<<   length     = 2
> > <<<<<<   value      = B4:5B
> > <<<<<<   translated = gsm, lte, td-scdma
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message...
> > >>>>>> RAW:
> > >>>>>>   length = 20
> > >>>>>>   data   = 01:13:00:80:03:0A:02:01:00:33:00:07:00:02:04:00:01:00:19:00
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message (translated)...
> > >>>>>> QMUX:
> > >>>>>>   length  = 19
> > >>>>>>   flags   = 0x80
> > >>>>>>   service = "nas"
> > >>>>>>   client  = 10
> > >>>>>> QMI:
> > >>>>>>   flags       = "response"
> > >>>>>>   transaction = 1
> > >>>>>>   tlv_length  = 7
> > >>>>>>   message     = "Set System Selection Preference" (0x0033)
> > >>>>>> TLV:
> > >>>>>>   type       = "Result" (0x02)
> > >>>>>>   length     = 4
> > >>>>>>   value      = 01:00:19:00
> > >>>>>>   translated = FAILURE: DeviceUnsupported
> >  
> > error: couldn't set operating mode: QMI protocol error (25): 'DeviceUnsupported'
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Unregistered 'nas' client with ID '10'
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message...
> > <<<<<< RAW:
> > <<<<<<   length = 17
> > <<<<<<   data   = 01:10:00:00:00:00:00:02:23:00:05:00:01:02:00:03:0A
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
> > <<<<<< QMUX:
> > <<<<<<   length  = 16
> > <<<<<<   flags   = 0x00
> > <<<<<<   service = "ctl"
> > <<<<<<   client  = 0
> > <<<<<< QMI:
> > <<<<<<   flags       = "none"
> > <<<<<<   transaction = 2
> > <<<<<<   tlv_length  = 5
> > <<<<<<   message     = "Release CID" (0x0023)
> > <<<<<< TLV:
> > <<<<<<   type       = "Release Info" (0x01)
> > <<<<<<   length     = 2
> > <<<<<<   value      = 03:0A
> > <<<<<<   translated = [ service = 'nas' cid = '10' ]
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message...
> > >>>>>> RAW:
> > >>>>>>   length = 24
> > >>>>>>   data   = 01:17:00:80:00:00:01:02:23:00:0C:00:02:04:00:00:00:00:00:01:02:00:03:0A
> >  
> > [13 Sep 2000, 03:43:25] [Debug] [/dev/cdc-wdm0] Received message (translated)...
> > >>>>>> QMUX:
> > >>>>>>   length  = 23
> > >>>>>>   flags   = 0x80
> > >>>>>>   service = "ctl"
> > >>>>>>   client  = 0
> > >>>>>> QMI:
> > >>>>>>   flags       = "response"
> > >>>>>>   transaction = 2
> > >>>>>>   tlv_length  = 12
> > >>>>>>   message     = "Release CID" (0x0023)
> > >>>>>> TLV:
> > >>>>>>   type       = "Result" (0x02)
> > >>>>>>   length     = 4
> > >>>>>>   value      = 00:00:00:00
> > >>>>>>   translated = SUCCESS
> > >>>>>> TLV:
> > >>>>>>   type       = "Release Info" (0x01)
> > >>>>>>   length     = 2
> > >>>>>>   value      = 03:0A
> > >>>>>>   translated = [ service = 'nas' cid = '10' ]
> >  
> > [13 Sep 2000, 03:43:25] [Debug] Client released
> > sh-4.2#
> >
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