From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020212 Description of problem: This is a simular problem to those reported for RedHat 7.0 bug 21802 and 7.1 bug 37454, but it hasn't been registered for RedHat 7.2 I have been using a Xircom CBEM56G on a Dell Latitude CPx H500 under RedHat 7.2. This laptop used to work great under RedHat 6.2. It has always had problems with newer releases unless I rebuilt the kernel with an old PCMCIA driver set from the 6.2 days. The default installtion sets up networking, but I only get between 10 Mbits/sec and 20 Mbits/sec throughput. Version-Release number of selected component (if applicable): kernel-2.4.9-21 kernel-pcmcia-cs-3.1.27-10 How reproducible: Always Steps to Reproduce: 1. Install RedHat 7.2 and updates 2. Use networking (netperf -H another_machine_runing_netserver) Actual Results: Networking is very slow. Netperf reports less than 20 Mbits/sec. Expected Results: This is a 100 Mbit/sec and Modem combo card. I expect something close to 100 Mbit/sec. Additional info: Recently I am having some success with a 2.4.9-21 kernel. Using netperf perfomance went form < 20 Mbits/sec to > 75 Mbits/sec between machines attatched to the same switch, a Netgear FS108. I did the following: 1) Moved /etc/rc.d/rc5.d/S45pcmcia to /etc/rc.d/rc5.d/S09pcmcia. Do the same for run levels 2, 3, and 4 if you use them. 2) Add a line to /etc/modules.conf: alias eth0 xircom_tulip_cb 3) Remove xircom_tulip_cb from /etc/hotplug/blacklist. 4) Add xircom_cb to /etc/hotplug/blacklist. I have not excercised the modem function at this time. It used to work under the 2.2 kernel series with seperate pcmcia-cs modules.