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I use Tab Mix Plus, and I have the following settings set:

  • "Don't load tab until selected" in Tabs dialog of Firefox is set
  • The "Reload all tabs" in TMP is unselected
  • The setting browser.sessionstore.restore_on_demand is set to true
  • The setting extensions.tabmix.sessions.restore.reloadall is set to false

To the best of my knowledge, and everything I googled, this should suffice and prevent the autoloading of all the tabs. However, it doesn't and after opening the browser, it loads all tabs. Strangely though, when I crash the browser, it honors these settings correctly.

What am I doing wrong?

share|improve this question
Maybe a conflicting extension? Disable all of them, check for issue. If issue not present, then you know an extension is causing a problem. Disable half, check again - repeat to determine the source of problem. (Do not disable one at a time since that takes a longer amount of time). – Wk_of_Angmar Nov 23 '12 at 2:36
@Wk_of_Angmar: Actually, I tried that. It didn't help, sorry... – Abel Nov 26 '12 at 9:57
I'd wondered that myself and thought to run the same test. Results: one or more of these extensions causes it not to work: Ghostery, Pin it button, Pinboard Extension, QuickJava, Tab Mix Plus, Video DownloadHelper, videoresumer, WOT. My money's on Tab Mix Plus, which I really like :( maybe there's a setting that makes them compatible . . . – r_alex_hall Jan 24 at 4:21
up vote 5 down vote accepted

At the time I write this, this is a known issue:

The only workable solution I've found is to disable session management in Tab Mix Plus*, enable the Firefox setting to only load tabs on demand (under tools -> options -> tabs -> "Don't load tabs until selected"), and, if you still want similar (probably better) Session Management functionality, install the Session Manager extension -- --

This extension has an equivalent setting under Tools -> Session Manager -> Session Manager -> General -> Saving and Restoring -> "Restore Tabs on Demand."

*As I've just installed the Session Manager extension, which modifies Tab Mix Plus' options interface, I don't recall exactly where to do that.

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The tip of the week for me, thanks ! As of today (April 2014) the bug in TabMixPlus is not resolved yet. – Benj Apr 13 '14 at 14:29
Revisiting this problem years later, my proposed solution does not work. I can also see that the Session Manager addon really only toggles the equivalent checkmark in firefox options; e.g. the implementation of "do not load tabs until selected" in Session Manager is really just a toggle of Firefox' implemention, which has been broken for years. Boo Firefox. This problem does not happen with SeaMonkey; SeaMonkey's implementation actually works. My real solution is to use SeaMonkey instead. – r_alex_hall Jan 19 at 16:47
The "Don't load tabs until selected" option works like a charm for me. Even with multiple windows that are restored at once. Maybe this is a TabMixPlus bug? Please try the "Don't load tabs until selected" option without any plugins. (you might need to do one restart of FF before this gets activated) – masgo Jan 20 at 9:01

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