On Sun, Jun 18, 2006 at 09:37:43PM -0400, Simon Wu wrote: > On 6/16/06, Greg KH <greg@xxxxxxxxx> wrote: > >On Fri, Jun 16, 2006 at 03:46:41PM -0400, Simon Wu wrote: > >> Hello, > >> > >> I am using the cdc_acm driver to control a few 3G mobile modem. When > >> we do ppp calls on it, it frequently crashs the USB portion of the > >> kernel. The machine is still usable but any process related the USB > >> show "Ds" mode. I attache the error below. It happens ed bother 2.6.11 > >> and 2.6.15 kernel on Fedora 4. But Debian with 2.6.13 kernel seems > >> stable. > >> > >> I will be very grateful if you can point me to how to prevent it. > > > >Upgrade to a newer kernel version which has a fix for this problem :) > >Try 2.6.16 or newer please. > > > >thanks, > > > >greg k-h > > > > I am glad to know this is a known problem. Thanks for the info of fix. > > Buy the way, the CDC ACM driver couldn't support 384kbps downlink > speed for the modem with 2.6.13 kernel. I haven't tested the speed yet > for 2.6.15. But is this speed issue fixed as well in 2.6.16? I do not know, it would probably be easier for you to test and report it :) thanks, greg k-h -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
