External USB modem makes kernel panics
External USB modem makes kernel panics
- Subject: External USB modem makes kernel panics
- From: "AM.URIARTE" <email@hidden>
- Date: Wed, 19 Jun 2002 14:38:18 +0200
Hi guys,
I really have a problem with a kernel extension. Could you help me with
the provided information? I know this question has been discussed in
this mailing lists most probably a lot of times but following some
conversations I dont get how to proceed.
My computer is an iMac G3/400 DV with 512MB RAM (2 x 256MB), under Mac
OS X 10.1.4.
My internal modem was broken and instead of repair it I bought a 3Com
OfficeConnect Business Modem, external USB and compliant with MacOS as
its built by USR Robotics but not specifically indicated for Mac OS X,
but its not a windmodem.
It doesnt matter if the modem is connected directly to the free USB
port or through an 7-port Keyspan USB hub connected to the free USB. I
get two or three very good connections and after that I loose the
control of the modem.
This loose of control always occurs when the line has dropped and the
Internet Application thinks is connected then I click Cancel
(Disconnect) and the Internet Application says "Disconnecting..." when
the modem has hang up minutes ago and I can not connect again.
Then when after just selecting restart I get this kernel panic (two
records from different days and with two different versions of Mac OS
X, 10.1.3 and 10.1.4, indeed the problems appear since update to 10.1.3
where IOSerialFamily.kext was modified to the current version 5.3.0d14).
Sometimes switching off and on the modem, or unplug / plug, makes the
iMac sees it again and connect to Internet but in most of cases the
only solution is to restart and get the kernel trap.
Once is plugged in the 7-port Keyspan USB Hub is shown in the Active
Ports in Network System Preferences, not added driver, that's the
reason I am thinking the Mac OS X kernel drivers are being used for my
modem but I don't understand the reason IOSerialFamily is used when the
modem is an USB device. Indeed an HP DeskJet 950C printer is connected
to the same USB hub and no problems but it's configured as USB
interface (what are the differences between USB device and USB
interface?) with the specific driver HP provides.
Looking at Kernel Extensions I got IOSerialFamily.kext is 2001-07-30
5.3 (5.3d14) and IOUSBFamily.kext is 1.8.7. Are they OK for 10.1.4?
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x00000060
PC=0x135cdc40
Latest crash info for cpu 0:
Exception state (sv=0x135d4000)
PC=0x135CDC40; MSR=0x00009030; DAR=0x00000060; DSISR=0x40000000;
LR=0x135cc30c; R1=0x0d203be0; XCP=0x0000000c (0x300 - Data access)
Backtrace:
0x135cd96c 0x135cc30c 0x000b81d8 0x000b5484 0x00191bc8
0x00092448 0x0008e600 0x00000000
Kernel loadable modules in backtrace:
com.apple.iokit.IOSerialFamily(5.3.0d14)@0x135c9000
Proceeding back via exception chain:
Exception state (sv=0x135d4000)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x135f0000)
PC=0x700035DC; MSR=0x0000d030; DAR=0x000cf000; DSISR=0x40000000;
LR=0x700035a4; R1=0xbffff450; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 5.3:
Thu Jan 24 22:06:02 PST 2002; root:xnu/xnu-201.19.obj~1/RELEASE_PPC
Memory access exception (1,0,0)
Waiting for remote debugger connection.
Options..... Type
------------ ----
continue.... 'c'
reboot...... 'r'
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x00000060
PC=0x135cec40
Latest crash info for cpu 0:
Exception state (sv=0x136de000)
PC=0x135CEC40; MSR=0x00009030; DAR=0x00000060; DSISR=0x40000000;
LR=0x135cd30c; R1=0x0d18bbe0; XCP=0x0000000c (0x300 - Data access)
Backtrace:
0x135ce96c 0x135cd30c 0x000b8c98 0x000b5f44 0x00192b84
0x00092f08 0x0008f0c0 0x5f313953
Kernel loadable modules in backtrace:
com.apple.iokit.IOSerialFamily(5.3.0d14)@0x135ca000
Proceeding back via exception chain:
Exception state (sv=0x136de000)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x13823000)
PC=0x700035DC; MSR=0x0000d030; DAR=0x0002b90; DSISR=0x40000000;
LR=0x700035a4; R1=0xbffff7a0; XCP=0x00000030 (0xC00 - System call)
Kernel version:
Darwin Kernel Version 5.4:
Wed Apr 16 09:27:47 PST 2002; root:xnu/xnu-201.19.3.obj~1/RELEASE_PPC
Memory access exception (1,0,0)
Waiting for remote debugger connection.
Options..... Type
------------ ----
continue.... 'c'
reboot...... 'r'
Thanks in advance,
Alberto
email@hidden
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