Red Hat Bugzilla – Bug 112435
New working LG LST-D400 wireless modem for kudzu
Last modified: 2014-03-16 22:41:04 EDT
From Bugzilla Helper: User-Agent: Mozilla/5.0 (compatible; Konqueror/3.1; Linux) Description of problem: The LG LST-D400 modem is working perfectly on my FC1, but Kudzu didn't configured it corretly. Solution bellow... Version-Release number of selected component (if applicable): kudzu-1.1.36-1, kernel-2.4.22-1.2115.nptl How reproducible: Always Steps to Reproduce: 1. Plug the modem on the USB port 2. service kudzu start 3. Try to make the modem work with a ppp connection Actual Results: Kudzu detects the new modem but it doesn't know how to configure it correctly. Generated block on /etc/sysconfig/hwconf: .... - class: OTHER bus: USB detached: 0 driver: unknown desc: "LG Electronics Inc. LG CDMA WLL" usbclass: 0 usbsubclass: 0 usbprotocol: 0 usbbus: 2 usblevel: 1 usbport: 1 usbdev: 2 vendorId: 1004 deviceId: 6800 usbmfr: LG Electronics Inc. usbprod: LG CDMA WLL - ..... class and driver fields are wrong. Expected Results: Full plug-and-play functionality Additional info: Making 'modprobe acm', dmesg shows a message about ttyACM0 being created, but is not.... I had to create by hand on /dev: crw-r--r-- 1 root root 166, 0 Dez 19 09:12 ttyACM0 Then I had to configure /etc/wvdial.conf by hand: [Modem1] Modem = /dev/ttyACM0 SetVolume = 1 Dial Command = ATDP Init1 = AT +CRM=1 Baud = 460800 Init3 = ATM1L1 FlowControl = CRTSCTS The Init1 string looks to be very important. I received it from my broadband provider support people. And somebody told me to put this in /etc/modules.conf. I think this is irrelevant for this bug, but didn't tested without it: alias char-major-108 ppp_generic alias tty-ldisc-3 ppp_async alias ppp-compress-24 ppp_deflate alias ppp-compress-26 ppp_deflate alias /dev/ppp ppp_generic After doing that, I was able to normally configure a ppp connection using redhat-config-network. # cat /proc/bus/usb/devices .... T: Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 1.01 Cls=02(comm.) Sub=00 Prot=00 MxPS=16 #Cfgs= 1 P: Vendor=1004 ProdID=6800 Rev= 0.00 S: Manufacturer=LG Electronics Inc. S: Product=LG CDMA WLL S: SerialNumber=Serial Number C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=acm E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=32ms I: If#= 1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=acm E: Ad=8a(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=0b(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms ....
The kernel module that makes it work is acm.o
Upgraded to FC2. The cdc-acm driver in FC2's original kernel was broken. Works fine with kernel-2.6.6-1.383. But kudzu is still not prepared for this modem. The dev-3.3.13-1 package creates the device in /dev/input/ttyACM0. I had to add to /etc/modprobe.conf: ------------------------------- alias char-major-166 cdc-acm ------------------------------- I had to create the /etc/wvdial.conf block by hand: ---------------------------- [Modem0] Modem = /dev/input/ttyACM0 Baud = 460800 SetVolume = 3 Init1 = AT +CRM=1 Init3 = ATM1L3 Dial Command = ATDT FlowControl = CRTSCTS ---------------------------- The Init1 string is very important. Without it, it doesn't work. This USB modem works fine.
Fedora Core 2 is now maintained by the Fedora Legacy project for security updates only. If this problem is a security issue, please reopen and reassign to the Fedora Legacy product. If it is not a security issue and hasn't been resolved in the current FC3 updates or in the FC4 test release, reopen and change the version to match.
I tested once on FC3 with some official kernel update and it works now. I'm currently using this modem with RHEL4 with no problems.