Ubuntu
xorg package

black screen/X locking up after using ctrl+alt+f1 and then ctrl+alt+f7

Bug #164807 reported by ekravche
4
Affects Status Importance Assigned to Milestone
xorg (Ubuntu)
Invalid
Undecided
Unassigned

Bug Description

Hello,

I'm having a problem with the X locking up/showing a black screen. This started in edge eft (ubuntu 6.10). Here is the repro sequence

1) Create 2 accounts 1 user account and 1 admin account
2) start ubuntu
3) at the login screen log on to the user account with limited privs
4) Then using the ui Applications->System Tools -> New login (basically invoke new login)
5) login as the admin user
6) switch to the user account using ctrl+alt+f7 (you'll be prompted to enter the password since the screen gets locked)
7) play a movie or perform some other operation in the user account.
8) while the movie is playing switch back to the admin account using ctrl+alt+f8 or ctrl+alt+f9.
9) repeat steps 6 to 8, you'll see that eventually ctrl+alt+f8 and ctrl+alt+f9 will show a black screen for both the user and the admin accounts or the entire OS will freeze.

Note this seemed to have started in 6.10 and is still a problem, even in 7.04.

This is still a problem in 8.04

It can also be reproduced by switching between the console ctrl+alt+f1 and X ctrl+alf+f7. If you do this many times, eventually the black screen will appear when you try to switch to X.

See original description
Revision history for this message
ekravche (eugenekravchenko) wrote :

The fix.

Just use
  /etc/init.d/gdm stop

Followed by
  /etc/init.d/gdm start

This will restart the gdm and resolve the problem

Revision history for this message
ekravche (eugenekravchenko) wrote :

The fix.

Just use
  /etc/init.d/gdm stop

Followed by
  /etc/init.d/gdm start

This will restart the gdm and resolve the problem

Revision history for this message
ekravche (eugenekravchenko) wrote :

If that doesn't work try
    /etc/init.d/gdm force-reload

Revision history for this message
ekravche (eugenekravchenko) wrote :

If this doesn't work do

/etc/init.d/gdm stop
starx

Revision history for this message
ekravche (eugenekravchenko) wrote :

the workaround works, but I still rather have this bug fixed, since others are experiencing it as well

Revision history for this message
ekravche (eugenekravchenko) wrote :

I have an Intel 82915G/GV/910GL Integrated Graphics Controller btw.

ekravche (eugenekravchenko)
description: updated
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ekravche (eugenekravchenko) wrote :

here are the related attachments

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ekravche (eugenekravchenko) wrote :
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ekravche (eugenekravchenko) wrote :
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ekravche (eugenekravchenko) wrote :
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Fabio Serpa (fs3rp4) wrote :

Are you using Nvidia restrict drivers + compiz? This is a common problem with this set.

If yes. Disable the visual effects to none and test again...

Revision history for this message
ekravche (eugenekravchenko) wrote :

Not using compiz or restricted drivers.

Revision history for this message
Bryce Harrington (bryce) wrote :

Hi eugenekravchenko,

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with the latest development release of Ubuntu? (ISOs are available from cdimage.ubuntu.com)

If it remains an issue, could you also attach a new /var/log/Xorg.0.log?
Thanks in advance.

The output of lspci -vvnn would also be worth having.

Changed in xorg:
status: New → Incomplete
Revision history for this message
Bryce Harrington (bryce) wrote :

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.

Changed in xorg:
status: Incomplete → Invalid
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