Problem with RPM to DEB conversion by using alien

Question

I am facing problem with installing my laptop drivers which are in rpm package. I have tried to install them bu using 'alien', but unfortunately that did not work. It is generating warning when I convert the package.rpm into package.deb:

rashid@rashid-laptop:~/Desktop$ sudo alien --script -k ras.rpm  
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54<br> 
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54<br> 
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
warning: ras.rpm: Header V3 RSA/SHA256 signature: NOKEY, key ID 307e3d54 <br>
Unpacking of 'ras.rpm' failed at /usr/share/perl5/Alien/Package/Rpm.pm line 153. 

Solution

I went ahead and grabbed ras-something-src.rpm from here.

It appears to just be a python script and a readme.

If you use alien -g it will just generate the build directory so you can examine the contents. Here they are on pastebin ras.py and README.

Even with the key warning the rpm to deb conversion succeeds. I would look at the debian packaging guide and just use sudo alien -g whatever.rpm to generate your build directory. Then go through the normal package build steps.