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Summary:DAHLIN-00043: Loading and Configuring wctdm breaks various system commands
Reporter:andre valentin (avalentin)Labels:
Date Opened:2008-09-19 06:40:48Date Closed:2008-10-06 08:30:15
Priority:BlockerRegression?No
Status:Closed/CompleteComponents:wctdm
Versions:2.0.0-rc5 Frequency of
Occurrence
Related
Issues:
Environment:Attachments:( 0) dahdi.dmesg.debug100
( 1) system.conf
Description:Im using asterisk-rc6 with dahdi rc5 (or rc4, does not matter). After loading the wctdm module and configuring the channels with dahdi_cfg varios system commands do stop working. For example, the ssh server responds unpredictable (existing connections close). Also ssh-keygen seems to hang in a loop.
If remove the channels from system_conf, execute dahdi_cfg and unload the module ssh works fine again.
I cannot break it down to any special revision, but the last zaptel revision worked.



****** ADDITIONAL INFORMATION ******

Distribution CentOS 5
Kernel: 2.6.18-92.1.10.el5 #1 SMP
Dahdi MMX Support: disabled
Comments:By: John Bigelow (jbigelow) 2008-10-03 16:40:22

I will try to test duplicate the issue next week. In the mean time...

Upgrade to DAHDI-2.0 and Asterisk 1.6.0 releases and try it out. Continue below if it still occurs.

Try loading the driver like so:
modprobe wctdm alawoverride=1

Check to see if system commands work or not. If not then do:
1. rmmod wctdm dahdi
2. comment out "alaw=1-4" in your system.conf
3. modprobe wctdm
4. Check system commands again


By: Dirk Nehring (dnehring) 2008-10-06 01:44:41

I have done this, I also disabled "alawoverride" and "alaw=1-4", so everything is working with ulaw, dahdi is 2.0.0, asterisk is 1.6.0 Same symptons, system is unstable, ssh not possible, asterisk crashes 4 of 5 times when starting. After disabling dahdi/wctdm ssh works again. FYI, nothing is plugged into the card.

Module 0: Installed -- AUTO FXS/DPO
ProSLIC on module 1, product 0, version 2
ProSLIC on module 1 seems sane.
ProSLIC on module 1 powered up to -75 volts (c9) in 9 ms
Loop current set to 20mA!
Post-leakage voltage: 31 volts
ProSLIC on module 1 powered up to -75 volts (c9) in 7 ms
Loop current set to 20mA!
Calibration Vector Regs 98 - 107:
98: 10
99: 12
100: 10
101: 0f
102: 02
103: 79
104: 05
105: 2a
106: 20
107: 08
Init Indirect Registers completed successfully.
DEBUG: fxstxgain:0.0 fxsrxgain:0.0
Proslic module 1 loop current is 20mA
[...]
Found a Wildcard TDM: Wildcard TDM400P REV I (4 modules)
dahdi_echocan_mg2: Registered echo canceler 'MG2'
dahdi: Registered tone zone 29 (Germany)
By: Russell Bryant (russell) 2008-10-06 08:30:11

Please pursue this issue through Digium tech support.
By: Tzafrir Cohen (tzafrir) 2013-01-28 08:21:53.750-0600

Just noticed that this is an old issue. I suspect the faulty OSLEC code. If the issue was not reproduced since, maybe close it?