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Old 12-02-2011, 05:29 AM   #1
redale
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System freezes after login in Ubuntu 11.10


I have been using Ubuntu 11.10 successfully since it became available (I upgraded from the previuos version). In the last couple of days I have been unable to get beyond the login stage. After I put in my password the system just produces a desktop colour but no icons or anything else. Usually, the cursor then becomes "locked". Occasionally, I get "File Edit View Go Bookmarks Help" across the top of the screen but nothing else.
I have tried logging in as "Guest" and that did produce the Ubuntu sidebar on the left side of the screen but when I tried to access Firefox the system just froze.
Would much appreciate any help.
Thanks
Roger
 
Old 12-03-2011, 01:57 PM   #2
corp769
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Hello,

I have found multiple threads related to this issue on these forums; Have a look here for one of them - http://www.linuxquestions.org/questi...0-10-a-859621/
Let me know if that thread helps or not.

Cheers,

Josh
 
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Old 12-05-2011, 05:58 AM   #3
redale
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I seem to have a hardware problem?

Quote:
Originally Posted by corp769 View Post
Hello,

I have found multiple threads related to this issue on these forums; Have a look here for one of them - http://www.linuxquestions.org/questi...0-10-a-859621/
Let me know if that thread helps or not.

Cheers,

Josh
Dear Josh,
Many thanks for your help.
I tried the 2 tests suggested by the link you provided.
(1)memtest86 v2.11 ran for 4+hours and seemed to show tens of thousands of errors(!) although it also said it passed 15 tests. I'm afraid I don't really know how to read memtest.
(2) I have an old DSL CD (version 3.3) which I assume is the Koppix suggested. After bootup, this seemed to show a window full of errors - for example "I/O error: 0b:01, sector 69300" and same error message with different sector numbers. Koppix finally said "Restoring backup files from /mnt/hda1 mounted on /dev/hda1". But after awhile "Unable to handle kernel NULL pointer dereference at virtual address 00000020".
Is my PC ready for the tip?
If so, is there any way to restore my personal files (email a OpenOffice files)?
Regards
Roger
 
Old 12-09-2011, 12:56 AM   #4
tommcd
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Registered: Jun 2006
Location: Philadelphia PA USA
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Quote:
Originally Posted by redale View Post
Is my PC ready for the tip?
If you have more than one memory stick in your computer, then perhaps only one stick is bad. Try running memtest with only one memory stick at a time in the computer until you find the bad memory. Hopefully you have at least one good memory stick in the computer and you can run with that until you can replace the faulty memory.
Quote:
Originally Posted by redale View Post
If so, is there any way to restore my personal files (email a OpenOffice files)?
Try running the computer with a known good memory stick. Or put the hard drive in a different computer if you can and try to copy the files.

Last edited by tommcd; 12-09-2011 at 01:27 AM.
 
Old 01-03-2012, 03:56 AM   #5
redale
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I have now replaced the faulty memory. and I have run memtest86 (which shows no errors on the new memory). However, I still cannot get into Ubuntu 11.10.
On startup the screen shows what I assume is the usual log-in screen (ie time and "power" button at top right, plus box to input my password halfway down on the left.)
But although mouse cursor moves it seems to have no effect (for example: it won't "click" the power button to allow me to shut down or anything else). Also, keyboard has no effect when trying to input my password. All I can do is to shut down via the PC "off/power" button.
On several occasions I have managed to input the password, but after that the screen is just a background (of purple) with no icons and the mouse cursor is locked in a fixed position.
On even fewer occasions, I have managed to input my password and then the usual background screen appears with the Ubuntu icons down the left side (ie Firefox, Thunderbird, Files, Update Manager, etc, etc). However, when I click any of these icons the system just locks up.
Incidentally, I have a copy of Xubuntu 11.10 on CD. That opens with the usual list of options and I opt for "Try Xubuntu without installing". That opens the usual deskttop, but when I try some action (for example: change the settings for "Display") - again the system just locks (ie mouse cursor is fixed, although keyboard does seem to have some effect).
Any ideas would be gratefully received
Thanks
Roger
 
  


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