help needed for Ubuntu 8.04 on HP 6720s notebook

[Abhishek Bawkar]

 Hi,

I am new to Ubuntu. I have HP6720s laptop with following configuration:
Processor:            *Intel Core 2 Duo T5470
*RAM:                   *1GB
*Chipset:                *Intel GME965 Express*
HDD:                   *120GB (12GB allocated for Ubuntu (10GB ext3
partition + 2GB Swap area))
*Network Interface: *Intel Fast Ethernet Integrated Controller (10/100 NIC)*
Wireless:              *Intel 802.11a/b/g, Bluetooth 2.0
*
I have installed *Ubuntu 8.04 (64-bit version)* and liked it very much, damn
good. Everything went well during the installation. Now I am facing
following problems:

1. *Ethernet is not working.* My ISP does not have *DHCP*. After setting IP
address, subnet mask, gateway, DNS, it shows that the LAN is connected, I
can see the packets being sent/received, but I cannot open any web page
neither I can ping any IP. I have tried almost everything mentioned on the
forum *"Ubuntu 8.04 Hardy and HP 6720s (a hopefully complete guide)"* and
other too to make my Ethernet work, but none of them worked. And because the
Ethernet is not working I am *not able to do* *"aptget"* for anything.
2. *build-essential is not getting installed.*
3. not able to compile any of the software packages like AWN, Compiz
settings manager etc. It shows *"C compiler could not create executables"*.
When I checked on forums I came to know that g++ is not installed. So I
tried to install *g++-4.2* (debian package, the one which is there on ubuntu
CD (ordered from ubuntu website)), but it says *"Dependency not satisfiable:
libstdc++6-4.2-dev"* and when I try to install *libstdc++6-4.2-dev* it says
*"Dependency not satisfiable: g++-4.2".* I didn't understand this, *g++-4.2
and libstdc++6-4.2-dev* both showing dependency not satisfiable for each
others (at least one should be independent of other).

Just to mention that, *I have tried all the above things on Ubuntu 8.04 (32
bit version) and Ubuntu 7.10 (32 bit version) also, none of them worked
there too.* *Would like to know whether Ubuntu 8.04 (64 bit version) is the
correct installation for my notebook.*

Please let me know if anyone has got solution for these, *at least the
Ethernet problem*. I guess, once my Ethernet problem gets solved then
everything else will be solved by "aptget".

Thanks in advance!!

Best Regards,

Abhishek
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