Someone suggested me to forward the post to linux-usb-devel mailing list.
On Tue, 25 Jan 2005 11:45:08 -0500, Simon Wu <[EMAIL PROTECTED]> wrote: > Hello, > > I am using the standard Fedora 2 and 3 installations. It have kernel > 2.6.5 and 2.6.9. > > I am using one of the Nokia wireless phones on the usb port. The > cdc-acm driver automatically recognizes the device. But there is some > warning/error messages in /var/log/messages file. The problem is, > whenever this happens, it freezes the PC for 5 to 10 seconds. If I > plug multiple devices on the system at the same time, the system > freezes for quite a while. I cannot even type anything. I found the > usb.agent processes takes over all CPU. > > Do we have any fix for this? > > Thanks, > > Simon > > Here is the /var/log/messages contents: > > Dec 7 12:56:57 gcarl036 su(pam_unix)[3121]: session opened for user > root by cdtt(uid=500) > Dec 7 12:57:26 gcarl036 kernel: usb 1-2: new full speed USB device > using address 3 > Dec 7 12:57:35 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:57:35 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:57:35 gcarl036 kernel: cdc_acm 1-2:1.1: ttyACM0: USB ACM device > Dec 7 12:57:35 gcarl036 kernel: usb 1-2: control timeout on ep0in > Dec 7 12:57:35 gcarl036 kernel: usbcore: registered new driver cdc_acm > Dec 7 12:57:40 gcarl036 kernel: drivers/usb/class/cdc-acm.c: > v0.23:USB Abstract Control Model driver for USB modems and ISDN > adapters > Dec 7 12:57:58 gcarl036 kernel: usb 1-2: USB disconnect, address 3 > Dec 7 12:58:01 gcarl036 kernel: usb 1-2: new full speed USB device > using address 4 > Dec 7 12:58:01 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:58:01 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:58:01 gcarl036 kernel: cdc_acm 1-2:1.1: ttyACM0: USB ACM device > Dec 7 12:59:08 gcarl036 kernel: usb 1-2: USB disconnect, address 4 > Dec 7 12:59:12 gcarl036 kernel: usb 1-2: new full speed USB device > using address 5 > Dec 7 12:59:12 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:59:12 gcarl036 kernel: drivers/usb/class/cdc-acm.c: Ignoring > extra header > Dec 7 12:59:12 gcarl036 kernel: cdc_acm 1-2:1.1: ttyACM0: USB ACM device > ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
