Mobidata EDGE modem issue with Linux Kernel (cp2101.c)

[Omar Shehab]

Hi,

I was trying to plug in a Mobidata EDGE modem (100EU) to my Linux (Ubuntu 8.04.2, kernel 2.6.24). It was not working. The lsusb command shows a device id 10CE:EA6A. In the line of 100 of cp2101.c, it says the device id should be 10C5:EA61. I think that's the source of problem everyone is facing with Mobidata EDGE modem. You may like to follow this link to see how many people are facing this problem.

I assume the solution is to edit the line or add a new line for Mobidata EDGE Modem 100EU and recompile the kernel.

The new line should be,

    { USB_DEVICE(0x10CE, 0xEA6A) }, /* Silicon Labs MobiData GPRS USB Modem 100EU */

Here in Bangladesh, a lot number of people and enterprises are using this model and facing problem while migrating to Linux. So, we, Bangladesh Open Source Network (www.bdosn.org), are trying to come up with a solution so that we can promote migration to Linux more cost effectively.

Thanks in advance for your reply.

|=============|
Regards,
Abu Mohammad Omar Shehab Uddin Ayub
(আবু মোহাম্মদ ওমর শেহাবউদ্দীন আইয়ুব)
Software Engineer, Nilavo Technologies, Banani, Dhaka
Bangladesh Open Source Network, Dhaka
2000 batch, Dept. of CSE, SUST
Sent from Dhaka, Bangladesh

[Omar Shehab (shehab)]

The location of the file is Linux-2.6.17/drivers/usb/serial/cp2101.c

[Omar Shehab (shehab)]

Similar issues have been reported in following bugs.

68956

[Omar Shehab (shehab)]

I have also registered this here.

http://bugzilla.kernel.org/show_bug.cgi?id=13555

[Omar Shehab (shehab)]

  Greg Kroah-Hartman says, they are going to fix it in 2.6.31 kernel release. Link
http://bugzilla.kernel.org/show_bug.cgi?id=13555

[Omar Shehab (shehab)]

They have already fix it.

[Omar Shehab (shehab)]

The release candidate is now public.

[Omar Shehab (shehab)]

When is Ubuntu going to adopt 2.6.31?

[Jeremy Foshee (jeremyfoshee)]

Hi Omar,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 387748

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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