Hello All,

When I try to load the Realtek 8187 modules to kernel using the ./wlan1up command, I get the following error:

[root@localhost rtl8187_linux_26.1025.0328.2007]# ./wlan1up
insmod: error inserting 'ieee80211_crypt-rtl.ko': -1 File exists
insmod: error inserting 'ieee80211_crypt_wep-rtl.ko': -1 File exists
insmod: error inserting 'ieee80211_crypt_tkip-rtl.ko': -1 File exists
insmod: error inserting 'ieee80211_crypt_ccmp-rtl.ko': -1 File exists
insmod: error inserting 'ieee80211-rtl.ko': -1 Invalid module format
insmod: error inserting 'r8187.ko': -1 Unknown symbol in module

Can someone tell me how to correct the "Invalid module format"? I hope that correcting the "Invalid module format" error, I will not have the "Unknown symbol in module" error.

Note: I am using wlan1 for this module as I previously am online with the wlan0 network. The same error occurs if I use ./wlan0up.

Thanks,
j_75080

This "Invalid module format" error will come if we use the kernel object compiled using X.XX.X.XX version and that KO is inserted in X.XY.Y.Y version of kernel

so, you ensure that the ieee80211-rtl.ko is compiled using the same kernel version, in which you are inserting the .ko

hope this helps you.

I am aware of the kernel version difference problem. The .ko module was inserted into the kernel within a minute or two after the module was compiled by that same kernel version. So, there must be another problem causing this.

Have you tried It may provide additional info on what is wrong.