AIX

I have installed AIX 5.2 on an H70. It actually reports a memory fault as in SRN 25c68008. However when the system starts up it reports that there is 1536 Mbyte of memory and the O/S starts. I am connecting through the serial port of an old laptop onto the S1 port of the H70. The setting is VT100 with 9600 N81 I get as far as the console login banner and when I enter root and hit return it comes straight back to the console login banner again. I have re-installed the O/S just to make sure there was not a problem there. I have also bought the machine up in maintenance mode into singel user and all seems correct. The root user is present in the password file etc.

Please help as I have an idea I have seen this before but for the life of me cannot remember what I did to fix it!

Hey,

I guess theres some problem with physical RAM. Just open your AIX box find your RAM, Unplug and clean it and put in other slot if any.
Refer the below link for hardware info:-
http://publib.boulder.ibm.com/infoce...c/hardware.htm

If that doesn't works than theres a serious problem with RAM find that with IBM by raising a PMR.

I have re-seated all the RAM devices and now the machine reports 2048 memory. There are no errors now on boot up, however whenever I try to login I arrive back at the console login prompt.

I started the machine in diagnostic mode and ran a test on the complete system with no returned errors. Very strange as I still cannot login!

This will not help you by itself, but i think your login problem has nothing to do with the memory.

Are you just not able to use the root user to log in or persists the problem for any other user too?

If you can get to single-user mode as you said, what was the output of "lsuser root" ? Were there any restrictions on login times, login terminals, and the like?

You might try to create a new user and give it a defined password (set as fix with "pwdadm -c <username>") and try to log in using this user.

I hope this helps.

bakunin

Thanks for your reply.

That was my next step, however I wanted to see if anyone knew of a known reason for this happening so as to prevent me wasting my time creating another user. I cannot see why the user would be restricted when this is a fresh install of the O/S. I wondered if this was something about the H70 where login using a serial connection was not possible. Which would mean I need to purchase a GXT130P graphics card.

Dear,
I think you need check the tty attr ,default the console can't login when your complete
os installation.pls setup the tty! you can reconfig it in maintenance mode .