Gnome-session: Can't log out and some applications don't start...

[Clement Lefebvre]

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Overview Description:
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1. Clicking "Quit" in mintMenu has no effect.
2. Starting a terminal from mintMenu takes about 10 seconds.
3. Some applications won't start at all.
4. In a terminal, typing "xterm" reports the following error message: "While connecting to session manager: Could not open network socket."

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Steps to Reproduce:
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It's quite hard to reproduce this as it involves a race-condition...

1) Click the Quit button in mintMenu and logout before the background fading animation is complete...

2) Log back in.

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Actual Results:
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- Quit button doesn't do anything.

- Xterm shows error message and terminal is slow to open.

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Expected Results:
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- Xterm should not show any error message.
- Terminal should be fast to open
- Quit button should show a dialog box.

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Reproducibility:
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Sometimes (race-condition involved).

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Found in:
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Linux Mint 4.0 Daryna BETA 021 (Main Edition).

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Additional Builds and Platforms Tested On:
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N/A

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Additional Information:
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N/A

[Clement Lefebvre (clementlefebvre)]

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1. Fault Description. Symptoms.
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See above.

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2. What is the cause of the problem?
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Upstream bug.

--> Caused by the Ubuntu patch "13_smoother_fading" on the gnome-session package.
--> Observed on gnome-session 2.20.0-0ubuntu2

Explanations here: https://lists.ubuntu.com/archives/ubuntu-devel-discuss/2007-March/000422.html
Upstream Launchpad Bug Report here: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/49221

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3. Workaround for the problem (How to restore the system).
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- Restart X (CTRL+ALT+BACKSPACE)

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4. Actions to perform if the fault occurs again and detailed traces.
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N/A

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5. Solution.
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Wait for a fix from Gnome, Debian or Ubuntu... eventually if this becomes critical we might remove the Ubuntu patch on the fader and see what new problems this can cause.

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6. When will we be able to deliver the correction?
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N/A

[Clement Lefebvre (clementlefebvre)]

To avoid the problem:

Make sure to let the backroung fading animation complete before actually logging out.

An easy fix to implement would be to grey out all buttons on the logout dialog and only make them sensitive once the animation is done... this little trick would prevent the user from entering in the race condition.

Clem