Realtek 8172 / 8192Se on Ubuntu

Well, I was having wifi problems with my new laptop...

Device:
Realtek Semiconductor Co., Ltd. Device 8172.

Ubuntu 9.10 Karmic 64-Bit

Files:
32Bit version: http://launchpadlibrarian.net/33927923/rtl8192se_linux_2.6.0010.1012.2009.tar.gz
64Bit version: http://launchpadlibrarian.net/34090404/rtl8192se_linux_2.6.0010.1012.2009_64bit.tar.gz

Download it and copy to Home Folder.

Uncompress the file downloaded for your distro, go inside the created folder and do:

su -
make
make install

If all went good u now should have it installed.
Now the tricky part (At least for 64Bit version, never test it on 32Bit). After reboot the system start to work but its always going down and crashing the system... So, put this on your system startup options after the "quiet splash" option put "quiet splash mem=4G iommu=off".
Seems there is a bug if you have more than 4Gb of RAM allocated in your system so you have to reduce it with mem=4G and turn iommu off.

(For easy way you can put it on /etc/default/grub under GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem=4G iommu=off") and do a grub-install.

Hope it helps, BB