HMC Screen Resolution

[TSch]

Hi folks,

is it possible to change the screen resolution of an HMC console ?

If so, how can it be done ?

Regards
Thomas

 

[khalidaaa]

IMO Not possible coz i tried with no luck!

Regards,
Khalid

 

[bjverzal]

Possible, but you'll need root. You need to change the X Config files, but be careful. You might try CTRL-ALT-"+" to cycle through the resolutions.

BV

 

[khalidaaa]

nice bjverzal! So how to get root access to the HMC? To my knowlegde it is not given!

Regards,
Khalid

 

[bjverzal]

You have to get it from IBM. Although you can set the root password when the HMC is set up.

 

[TSch]

Thanks for the hint !
Sounds good.

 

[DukeSSD]

You can set the root password any time from the hscroot user.

If the root user does not exist you can create it fron hscroot.

But root login is disabled.

To get to root you must login as hscpe, which you can also create from hscroot. Then you need the timed (it lasts for one calander day) pesh password to get to the pe-shell, which is the only place you can su to root from.

 

[DukeSSD]

The pesh password is the one you need to ask IBM for.

 

[scheerer]

If you need to get root access to your HMC you could try the following method, which has worked for me in the past:

Simply login using SSH as hscroot

then use a simple man to get the root access you require as follows:

$ man -P /bin/more chhwres // get 'more' as module instead of restricted 'less'
!/bin/bash // run root shell from man (HMC v4)
!ksh // run root shell from man (HMC v5)
$ export PATH=$PATH:/bin:/usr/bin
$ su -

 

[sbrews]

Interesting. I will have to test this out in the morning.

Add a little color to your PUTTY terminal: faq52-6627

 

[p5wizard]

I guess that backdoor was locked a while ago. It doesn't work no more...


HTH,

p5wizard

 

[khalidaaa]

DukeSSD nice info!

scheerer

Nice comment but i just tried it and it doesn't work! After issuing the su -, it asked me for a password which i think is root password! I don't have it! Is there a way to get around this?

If not then i guess p5 is right!

Regards,
Khalid

 

[DukeSSD]

As I said, you can set the root password any time from the hscroot user, but root login (and su root / su -) are disabled.

If the root user does not exist you can create it and set the password from the hscroot login.

Same goes for the hscpe user.

Once you have the root user and password, and the hscpe user and password setup then you need to login as hscpe, then run the pesh command and enter the IBM supplied, date specific, password to get to the pe shell, then you can su - or su root and enter the root password and you are root.

Sorry if that wasn't clear before.

 

[sbrews]

Same here - it prompts for pw... which I dont otherwise have.
Oh well.

Add a little color to your PUTTY terminal: faq52-6627