got WARNING when using ZTE MF622 HSDPA USB modem

[John Lenton]

The modem hangs, and trying to unhook pppd seems to fire the warning.

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
DistroRelease: Ubuntu 9.04
Failure: oops
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Dell Inc. MM061
Package: linux-image-2.6.28-11-generic 2.6.28-11.38
ProcCmdLine: root=UUID=c3ccfbbe-4024-4426-92cb-224c587dcd8d ro cryptopts=target=home,source=/dev/sda3 quiet splash
ProcVersionSignature: Ubuntu 2.6.28-11.38-generic
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.28/drivers/usb/serial/usb-serial.c:313 serial_write+0x9f/0xb0()

[Santana (rigosantana3-gmx)]

Report is complete and ready for dev

[Andy Whitcroft (apw)]

Does this bug prevent the continued use of this device, or is the device still functional without a reboot?

Can you also confirm this issue exists with the most recent Karmic Koala 9.10 Alpha release? ISO CD images are available at http://cdimage.ubuntu.com/releases/karmic/ . If the issue remains with Karmic it would be great to then also test the latest upstream mainline kernel available. This will allow additional upstream developers to examine this issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Thanks in advance.

[John Lenton (chipaca)]

On Tue, Sep 15, 2009 at 12:42:23PM -0000, Andy Whitcroft wrote:
> Does this bug prevent the continued use of this device, or is the device
> still functional without a reboot?

the device wouldn't be functional without a reboot, no.

> Can you also confirm this issue exists with the most recent Karmic Koala
> 9.10 Alpha release?

I haven't gotten a warning from the kernel for a couple of weeks at
least, now. Not that I've been actively looking for one, mind you.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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