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-   -   problem: setting advanced power management level to 0xfe (https://www.linuxquestions.org/questions/linux-newbie-8/problem-setting-advanced-power-management-level-to-0xfe-743686/)

crazyy 07-29-2009 08:59 AM

problem: setting advanced power management level to 0xfe
 
During uninstalling Dbus from my ubuntu I got this message: "setting advanced power management level to 0xfe [OK]" in a black screen and after that happened nothing so I decide to restart and when I did it I got:
kinit: No resume image, doing normal boot...

what the problem?
how can I solve it??

neonsignal 07-29-2009 10:46 AM

If this is a new install of Ubuntu (ie, if you don't have any data of value on the computer), then I'd suggest reinstalling it. You shouldn't remove dbus - it handles much of the communications between desktop applications and the operating system, so you can't do much without it.

The black screen you are seeing is just the text based interface to the operating system; Ubuntu normally hides this during startup, but because you have removed half the operating system, it can't open up any graphical user interface.

If you do have data of value on the system, then you will need to resurrect the system using the command line interface. You can do pretty much everything from the command line, so this isn't as bad as it sounds.

Just out of interest, what was the reason that you removed dbus? Perhaps the description in the package manager was a bit misleading?

crazyy 07-29-2009 11:02 AM

Thanks neonsignal

First of all the reason of uninstalling dbus is that I need to downgrade it to older version because the new version of dbus makes alot of problems with bluez. But the problem I don't know how to downgrade it so I decide to uninstall it and install the older version. If you know how could I downgrade it please help me.
Anyway I found away to solve my problem. Which is:
I tried :

Code:

sudo apt-get install ubuntu-desktop
but I have no network configurations. So I made a new network configurations:

Code:

ifconfig eth0 my-ip netmask my-netmask up
route add default gw gateway-ip-add
sudo nano /etc/resolv.conf

and I added this line:
nameserver DNS-server-ip-add

Then I installed dbus again just because it was the reason of my problem and:

Code:

sudo apt-get install dbus
sudo dpkg-reconfigure xserver-xorg

follow the instructions and finally reboot.
Now everything is OK.
I am replying now just in case anyone got the same problem so he can try this maybe it can help him.

neonsignal 07-29-2009 06:11 PM

Glad to see you got your system going again.

The reason why there are few instructions for 'downgrading' is that it is an inherently risky process, and likely to break the system.

It is relatively easy to create new stuff that is backward compatible with the old system, and can just be upgraded in place.

On the other hand, with downgrading, you are replacing components with older versions that might not be forward compatible with the rest of the system (because one cannot predict the future).

Anyway, yes, it is possible to force package managers such as apt to downgrade. One can use pinning to force it to install older versions of packages (have a look at the second section in this howto).

However, I would not recommend this unless you are prepared for the possibility of ending up with an unbootable system.

If you have an option of simply reinstalling the older system (not forgetting to backup your data first), it is faster and involves a lot less frustration.


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