NotebookForums.com › Forums › Notebook Manufacturers › Dell Forums › Dell Notebooks - General › Problem: Latitude X1 hangs
New Posts  All Forums:Forum Nav:

Problem: Latitude X1 hangs

post #1 of 7
8/27/06 at 11:25pm
Thread Starter 
My Latitude X1 (1028M, 80GB) has a habit to hang sometimes suddenly.

The problem is not related with the overheating and it doesn't happen often.
I control the temperatures and I see no correlation between the temperatures or CPU load and the fact that X1 suddenly hangs. My X1 is working well even at the temperatures as high as 60C after long use.

By hanging I mean that the cursor stops to react to the touchpad and mouse
and even ctrl-alt-del produces no reaction, so that the laptop has to be unpowered manually.

I have undervolted my processor to 0.716V at 600MHz and 0.812V at 1,1GHz.
These voltages seem to have passed the prime95 stability test.

I use this notebook quite a lot and the problem happens 2 or 3 times a week.



ANy idea?
Reply
Reply
post #2 of 7
8/28/06 at 7:41am
ran memtest?
any particular app/function was running just before "hang"?

cheers ...
Reply
Reply
post #3 of 7
8/29/06 at 12:03am
Thread Starter 
Thanks, I decided to run memtest for a longer time to see if my RAM is OK
(though, it is Kingston supplied by Dell). So far I haven't seen errors.

I haven't observed if the "hanging" is correlated with some specific applications.
Cygwin and Virtual Dimension (virtual desktops) are almost always running on my X1 (+ NHC, NOD32 antivirus, winpatrol etc.)

On one occasion a bluescreen was produced when I tried to launch a Cyberlink TV tuner software (on X1 it takes up to 90% of CPU resources when working).
Reply
Reply
post #4 of 7
8/29/06 at 6:29am
tried to run your laptop pur (meaning no external devices connected) for a period of time to see?

cheers ...
Reply
Reply
post #5 of 7
8/29/06 at 6:26pm
Thread Starter 
Quote:
Originally Posted by qhn
tried to run your laptop pur (meaning no external devices connected) for a period of time to see? cheers ...
The "hangs" have been occuring usually after the laptop was working for several hours without external devices. I decided to increase my undervolted CPU voltages one step higher to see if the "hangs" will occur again. I will report the details if the hang will happen once again or if the higher voltages have resolved the problem of rare hangs.
Reply
Reply
post #6 of 7
8/29/06 at 6:33pm
i wonder if this model has the intel wifi card that has an issue with memory leak. u might want to take a look in this direction as well. still i heard that this baby can be running quite hot sometimes

cheers ...
Reply
Reply
post #7 of 7
9/30/06 at 5:54pm
Thread Starter 
Thanks for help.

I think the cause was my excessive undervolting. Unfortunately, the ULV 1,1GHz processors installed by Dell seems to be less undervoltable than other
Pentium M processors I had before.

Now, when I rised all voltages 1-2 level higher (in NHC), so that it runs 600MHz at 0,716V, the crashes don't happen anymore. There was a single
crashe when I joined 2 USB devices. Probably it has created a short voltage
drop on the processors and lead to a blue screen.

I think the problem is solved this way.

Latitude X1 is a great ultraportable computer. Mine doesn't overheat as some have reported, the passive cooling system works fine (I see the processor temperature drop even if I open window in the night!) and the 1,8" 80GB hard disk is faster than its lower capacity compagnions.
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Dell Notebooks - General
NotebookForums.com › Forums › Notebook Manufacturers › Dell Forums › Dell Notebooks - General › Problem: Latitude X1 hangs