Why does my Ubuntu freeze in the middle of something with a blank screen?

Posted by mohamed on Ask Ubuntu See other posts from Ask Ubuntu or by mohamed
Published on 2012-06-27T23:19:43Z Indexed on 2012/06/28 15:25 UTC
Read the original article Hit count: 393

Filed under:

12.04

|

dell

|

black-screen

I am facing a serious problem as my Dell Optiplex 745 loaded with Ubuntu 12.04 32bit freezes with a blank screen no mouse cursor no keyboard activity in many occasions.

Sometimes when I open firefox, or software center, I really can't tell what the main problem is, but what i am certain about is it i have to do a hard reset to reboot.

I tried to use a live-cd to boot but it did the same, tried the recovery console but couldn't find a way to fix from there (I am a new user) suspected a hardware problem but windows runs flawlessly so I believe its something related to ubuntu.

Specs:
Intel Celeron D 3.06 GHZ
3.0 GB ram
Intel built in graphics Q965
1 TB HDD
Bios Phoenex 2.6.4

Please help I really love ubuntu and I don't want to go back to windows!

© Ask Ubuntu or respective owner

Related posts about 12.04

Wipe 12.04/Windows 7 dual boot setup and start fresh new 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have an Asus u56e laptop running dual boot setup, Windows 7 and 12.04. I had Windows 7 first. I was wondering what's the easiest way possible to erase/format my drive (500GB) so that it deletes Ubuntu and Windows 7 so I can reinstall 12.04 onto my whole drive? Does the Ubuntu Live CD help make this… >>> More
In 12.04: Failed to load session 'ubuntu' [closed]

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I'm using 12.04 beta. Today I was prompted to install some updates, which I did, followed by a reboot. On reboot, X starts, but all I see is a single dialog window in the middle of the screen… >>> More
Will final version of 12.04 use the power management changes found in kernel 3.3

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have seen in some version of Ubuntu that instead of making a huge change to update to the latest kernel, they take some of the good stuff out of it, for the sake of stability and put it on a previous version. In this case, kernel 3.3 has seen some very good power management enhancements that are… >>> More
Wired PS/2 Keyboard and Mouse do not work in 12.04 Live CD or after fresh 12.04 install - Foxconn D270S Atom Motherboard

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
My Wired PS/2 keyboard and mouse do not work in 12.04, either in a fresh install or from the Live CD. A USB keyboard and mouse will work. The PS/2 keyboard and mouse will work using the same hardware and a fresh 10.04 Ubuntu install or a fresh Windows 7 install. The motherboard is a Foxconn D270S… >>> More
Difference between 12.04 and 12.04.1

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I recently did a fresh install of Ubuntu 12.04 two days ago. Or at least I thought it was 12.04, but actually 12.04.1. Now I'm having errors popping up from the grub loader. Error: no video mode activated which was apparently resolved in this bug# 699802. However these workarounds are for 11.xx… >>> More

Related posts about dell

Dell Inspiron 14z laptop vs Dell inspiron 14z ultrabook

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Just wanted to know if both of these are fully compatible with Ubuntu? If only specific versions of Ubuntu are compatible, then which ones? http://www.dell.com/ca/p/inspiron-14z-5423/pd http://www.dell.com/ca/p/inspiron-n411z/pd Matters I am more concerned about are: 1) Affect on battery life… >>> More
Dell Dell E2009W monitor not detected

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I have an issue with my monitor. I just installed Ubuntu 11.10, but the monitor that is plugged in doesn't appear anywhere. And by doesn't appear, I mean that in the "Displays" menu, it doesn't even appear as "Unknown", I just have my screen that appears and nothing else. It is connected through… >>> More
Imaging Dell OEM Windows 7 install onto other Dell laptops purchased

as seen on Super User - Search for 'Super User'
We have ordered 70 dell laptops directly from dell. We are wondering if we can take the existing OEM install of windows on one of the laptops, add some files and then deploy that image to the rest of the laptops. We are trying to avoid making an image from the ground up. I would imagine since we… >>> More
Dell PSU Compatibility: Dell Inspiron 530 (Desktop)

as seen on Super User - Search for 'Super User'
I have an Inspiron 530 with a stock PSU. I need to upgrade it to meet my video card's needs (AMD HD6770), which demands at least 450W, to potentially fix BSODs with the latest version of the drivers (so claims AMD support). Now, I've heard conflicting reports about whether Dell uses special/proprietary… >>> More
Failure connecting to Dell MD3200i from XenServer 6.2 pool

as seen on Server Fault - Search for 'Server Fault'
This question also asked at Citrix Forums http://forums.citrix.com/thread.jspa?threadID=332289 I have a MD3200i that is currently working fine with my Xen5.6 pool, but I cannot get a connection to the new 6.2 pool to work. I previously had a problem with a 6.0 upgrade (which is why the old pool is… >>> More