#17249: RB750UP: Trouble with various USB modems (E3276 E173 E220 K3715)
-------------------------------------------+------------------------
Reporter: raver@… | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: kernel | Version: Trunk
Keywords: rb750up e3276 e173 e220 k3715 |
-------------------------------------------+------------------------
Arch: ar71xx[[BR]]
Machine: Mikrotik RB750UP[[BR]]
Modems tested: Huawei E3276 E173 E220 K3715.[[BR]]
Hi,[[BR]]
I began to have problems with several USB modems and Mikrotik RB750UP
units.[[BR]]
PPP connection initially starts up correctly on all modems, but after a
few moments I get these messages:
'''E173 E220 K3715'''
The router is runnig r41815, 3.10.49 kernel.
{{{
[72155.340000] usb 1-1.1: new high-speed USB device number 5 using ehci-
platform
[72156.120000] usb 1-1.1: USB disconnect, device number 5
[72160.200000] usb 1-1.1: new high-speed USB device number 6 using ehci-
platform
[72160.320000] option 1-1.1:1.0: GSM modem (1-port) converter detected
[72160.330000] usb 1-1.1: GSM modem (1-port) converter now attached to
ttyUSB0
[72160.360000] cdc_ether 1-1.1:1.1 wwan0: register 'cdc_ether' at usb-
ehci-platform-1.1, Mobile Broadband Network Device, 02:50:f3:00:00:00
[72160.370000] option 1-1.1:1.3: GSM modem (1-port) converter detected
[72160.390000] usb 1-1.1: GSM modem (1-port) converter now attached to
ttyUSB1
[72160.390000] option 1-1.1:1.4: GSM modem (1-port) converter detected
[72160.410000] usb 1-1.1: GSM modem (1-port) converter now attached to
ttyUSB2
[72225.300000] option1 ttyUSB0: option_instat_callback: error -2
[72226.440000] option1 ttyUSB0: option_instat_callback: error -2
[72229.100000] option1 ttyUSB0: option_instat_callback: error -2
[72230.850000] option1 ttyUSB0: option_instat_callback: error -2
[72231.980000] option1 ttyUSB0: option_instat_callback: error -2
[72234.580000] option1 ttyUSB0: option_instat_callback: error -2
[72236.310000] option1 ttyUSB0: option_instat_callback: error -2
[72237.450000] option1 ttyUSB0: option_instat_callback: error -2
[72240.060000] option1 ttyUSB0: option_instat_callback: error -2
[72241.800000] option1 ttyUSB0: option_instat_callback: error -2
[72242.930000] option1 ttyUSB0: option_instat_callback: error -2
...
}}}
In the case of E173, the ethernet interface (cdc_ether) also hangs
up.[[BR]]
I also had problems with older releases (r40380, 3.10.34 kernel).
{{{
...
option1 ttyUSB0: option_instat_callback: error -71
...
}}}
Interestingly, the ZTE MF632 works fine on the same router (also r40380,
3.10.34 kernel).[[BR]]
I did connect the modems to both a powered and unpowered USB hub, but to
no avail.[[BR]][[BR]]
'''E3276'''
The router is running r40585, 3.10.36 kernel.[[BR]]
PPP connection also starts up but almost immediately all serial ports hang
up, but no output is shown by dmesg.[[BR]]
Using wwan0 interface (NCM protocol) throws this error:
{{{
[ 837.780000] cdc_ncm: wwan0: 150 mbit/s downlink 150 mbit/s uplink
[ 837.790000] cdc_ncm: wwan0: network connection: connected
[ 1225.010000] ------------[ cut here ]------------
[ 1225.010000] WARNING: at net/sched/sch_generic.c:255
dev_watchdog+0x1e8/0x26c()
[ 1225.020000] NETDEV WATCHDOG: wwan0 (cdc_ncm): transmit queue 0 timed
out
[ 1225.020000] Modules linked in: ppp_async option iptable_nat cdc_mbim
usb_wwan qmi_wwan ppp_generic nf_nat_ipv4 nf_conntrack_netlink
nf_conntrack_ipv4 iptable_raw iptable_mangle iptable_filter ipt_REJECT
ipt_MASQUERADE ipt_ECN ip_tables cdc_ncm cdc_ether xt_time xt_tcpudp
xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_nat xt_multiport
xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_ecn xt_dscp
xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS
xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY x_tables usbserial
usbnet ts_kmp ts_fsm ts_bm slhc nfnetlink nf_nat nf_defrag_ipv4
nf_conntrack crc_ccitt cdc_wdm tun zram lzo_decompress lzo_compress
zsmalloc ohci_hcd ehci_platform ehci_hcd gpio_button_hotplug usbcore
nls_base usb_common
[ 1225.090000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.36 #1
[ 1225.100000] Stack : 00000000 00000000 00000000 00000000 80352e9a
00000032 802f9098 00000055
[ 1225.100000] 802ac420 802f8e1b 00000000 80352648 802f9098 00000055
8037381c 00000001
[ 1225.100000] 00000004 800790bc 00000003 80076b40 802d3728 00000055
802adce8 802f3c74
[ 1225.100000] 00000000 00000000 00000000 00000000 00000000 00000000
00000000 00000000
[ 1225.100000] 00000000 00000000 00000000 00000000 00000000 00000000
00000000 802f3c00
[ 1225.100000] ...
[ 1225.130000] Call Trace:
[ 1225.140000] [<8006e384>] show_stack+0x48/0x70
[ 1225.140000] [<80076c3c>] warn_slowpath_common+0x78/0xa8
[ 1225.150000] [<80076c98>] warn_slowpath_fmt+0x2c/0x38
[ 1225.150000] [<8020d8d4>] dev_watchdog+0x1e8/0x26c
[ 1225.160000] [<80082924>] call_timer_fn.isra.38+0x24/0x80
[ 1225.160000] [<80082afc>] run_timer_softirq+0x17c/0x1bc
[ 1225.170000] [<8007d9b8>] __do_softirq+0xd0/0x1b8
[ 1225.170000] [<8007db40>] do_softirq+0x48/0x68
[ 1225.180000] [<8007dd74>] irq_exit+0x54/0x70
[ 1225.180000] [<80060830>] ret_from_irq+0x0/0x4
[ 1225.180000] [<80060a80>] __r4k_wait+0x20/0x40
[ 1225.190000] [<8009f004>] cpu_startup_entry+0xa4/0x104
[ 1225.190000] [<80314910>] start_kernel+0x38c/0x3a4
[ 1225.200000]
[ 1225.200000] ---[ end trace c8a289e1e4c6bcfb ]---
}}}
Could all these issues be related?
I'm available to provide more info and do further testing if
necessary.[[BR]]
Thanks in advance.
--
Ticket URL: <https://dev.openwrt.org/ticket/17249>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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