Morteza, You have already tried the hsfmodem drivers as suggested by scanModem: Support type needed or chipset: hsfmodem For owners of a Dell PCs with Conexant HSF modems, a driver source package with full speed enabled is available, but requires driver compiling. Read DOCs/Conexant.txt Start at http://www.linuxant.com/drivers/hsf/downloads-license.php to find the hsfmodem package matching your System. For several Linux distros, there are precompiled drivers matched to specific kernels. These have within the FileName, your KernelVersion: 2.6.24_16_generic They can be found through http://www.linuxant.com/drivers/hsf/full/downloads.php A more precise location may be given a few paragraphs below. If an EXACT Match with your your KernelVersion is not found, one of the "Generic packages with source" near the bottom of the page must be used. Downloaded packages must be moved into the Linux partition (home folder is OK) and unzipped with: unzip hsf*.zip The installation command for a .deb suffic packages is, with root/adm permission: sudo dpkg -i hsf*.deb while for .rpm suffix it is, with: rpm -i hsf*.rpm From http://www.linuxant.com/drivers/hsf/full/downloads-ubuntu-x86.php download hsfmodem-7.80.02.02full_k2.6.24_16_generic_ubuntu_i386.deb.zip Under Linux unpack with: $ unzip hsfmodem*.zip Then install with: $ sudo dpkg -i hsfmodem*.deb Subsequently, the modem should be found with $ sudo wvdialconf /etc/wvdial.conf Edit in your personal information with: $ sudo gedit /etc/wvdial.conf and try dialing out with: $ sudo wvdial. See DOCs/Testing.txt for details. Read DOCs/Conexant.txt If the modem is nonfunctional or the system freezes, please write back and let linuxant support (Jonathan) know about it. CC:'d so he may ask for a report so he can better help you find the problem. Regards, Antonio On Thu, Jun 25, 2009 at 8:44 AM, morteza newman<mortezanew@xxxxxxxxx> wrote: > hi,i've tried linuxant hsf modem driver,but it didn't work on ubuntu > hardy,and it caused crash on compize elive from debian. >