Freeze after Clearing Notifications

[tsujan]

Sometimes, when all notifications are cleared manually, the screen freezes completely so that only the hard reset could be used. Because of the hard reset, I can't provide you with any error message or log file. That happened to me two times in two weeks. I use Cinnamon 1.6.7 on Debian with nvidia 304.64.

[tsujan]

In fact, at those occasions, the cleared notification menu isn't closed but remains open with "No notifications" on it and the freeze occurs. So, the cause may be in the function "_clear_all" in cinnamon/applets/notifications@cinnamon.org. Just a guess.

[bwat47]

I haven't had any total freezes of cinnamon, but I have noticed that sometimes after clearing notifications just the notifications applet freezes and doesn't let me open it until I restart cinnamon.

[tsujan]

Oh, yes! I've seen that too. Both problems happen when the notifications are cleared with the "Clear notifications" button and both are random.

[mtwebster]

At the risk of sounding nosy, could you guys list what programs you use that generate most of your notifications? I have a feeling it's a specific program or programs that are causing the problem with the applet - I can fix the applet for sure to handle it, it would just be great to be able to reproduce the behavior while doing so.

[bwat47]

pidgin and networkmanager for me. I don't recall what I was using everytime I saw it freeze (and it happens pretty rarely, I've only seen it happen like 2 or 3 times so far), but most recently I believe it was a networkmanager notification after resuming from suspend, I opened the applet, hit clear, and instead of clearing it the applet froze on me, not letting me open it again (and was still showing that there was an unread notification). If I see it freeze again I'll try to note where the notification came from.

[tsujan]

Networkmanager for me. When I resume the system from hibernation, there's a Networkmanager notification because the connection goes off before hibernation. Sometimes, when I use the "Clear notifications" button, the freeze happens. Since yesterday, I just click inside the notification to see if there'll be any freeze in this way.

[bwat47]

Just saw this issue with pidgin as well, only I never hit clear notifications. This time I hit the notify popup right as it was about to disappear and go to the notification applet, it focused the pidgin window like I wanted, but the applet got stuck showing that there is an unread notification and I can't click it.

[tsujan]

This is related to the freezes caused by clicking on the "Clear notifications" button:

I changed the function "_clear_all" in cinnamon/applets/notifications@cinnamon.org/applet.js to the following and have seen no freeze for 3 days:

_clear_all: function() {
let count = this.notifications.length;
if (count > 0) {
for (let i = count-1; i >=0; i--) {
let notification = this.notifications[i];
this.notifications.splice(i, 1);
notification.destroy(NotificationDestroyedReason.DISMISSED);
}
}
this.update_list();
}

A few days should pass for knowing that the above change has any effect.

[autarkper]

A notifications fix was merged some time ago. Please reopen if you can reproduce the problem in a recent nightly build or in the upcoming Cinnamon 1.8.