| Summary: | KDE stops responding to keyboard after restarting the sound system | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Unknown <null> |
| Component: | general | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | andresbajotierra, aseigo, mail, mkyral |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | unspecified | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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Description
Unknown
2009-02-17 14:10:22 UTC
Weird. Can you create a new user account only for testing if it happens also in a clean account? Thanks I used the plasma screensaver (because of my machine returned from sleep). Amarok played a track and it stopped producing sound after a ~1 minute (but playing continued). Sound were not working anymore. Then I created a brand new account and logged in. Log-in tune and everything were ok (I tried it with mplayer). After I restarted the ALSA sound service and nothing special happened there. Logged out and I got back to my previus locked session. Password input was ok but after there were no response to keyboard... It is like an invisible wall is in front of my screen. Clicking on X (close button) or some items on the tray are ok, but when I try to click on a tab in Opera or on the "Log out" button in the start menu, I get a "move" cursor (http://www.echoecho.com/css_move.gif )(which probably acts in the same way because clicking is not detected). I made an other observation: I stopped NetworkManager (/etc/init.d/network stop) and configured the network (with ifconfig up, dhclient and route) then stopped the network with 'ifconfig eth0 down'. And after that: all the same as above, no response. Ok, I figured out what causes this _in some cases_. When I have a new mail, Kontact pops up a Plasma notification. After that my screen is locked down (see Bug 186400). But sometimes this locking is just a "half success", because I can't do anything with my keyboard, but the mouse is fully functionable, and I see my desktop. `kde4-config --version` Qt: 4.5.0 KDE: 4.2.68 (KDE 4.2.68 (KDE 4.3 >= 20090327)) "release 1.2" kde4-config: 1.0 Mh, this is a strange one. If the freeze is hardware related (restarting sound system/ network) this may be related to Solid (KDE hardware lib). If it's only sound related it may be a Phonon bug (KDE multimedia system). The strange cursor and the "freeze" could be related to some strange window/dialog, which blocks the input. What Phonon backend do you have? If you change it, does a Plasma notification (from KMail or another app) blocks the PC the same way? Thanks I tried to reproduce it with the current KDE version (/etc/init.d/alsasound restart). This doesn't trigger the bug now. But when I use Eclipse Platform this occurs randomly yet (last time when I hit Alt+Tab froze the keyboard). When I tried to close Eclipse it asked me whether I would like to save my modifications and I could only click on the "Yes" button after I killed kwin (on tty0). I found what triggers this bug now: Alt+Tab. After an hour massive Alt+Tabbing once my screen locked like a fully transparent foil was on that and I could move it with mouse. Only the very-top part (v, ^, x) of a window reacts to a click. When I kill kwin this "foil" disappears, but there isn't any reactions to the keyboard (maybe because the lack of window manager). Restarting kwin causes this foil appearing again. ah, the "kwin eats my keyboard" bug; i run into that one from time to time myself. restarting kwin fixes it indeed; it seems something in kwin grabs the keyboard and then doesn't let it go. could this be a duplicate of bug #188499 ? As Aaron says it seems to happen sometimes and if it isn't that bug I'm sure to find another one in our list, which could fit ;-) Oh, and one more observation: In this "foil mode" when I use mouse wheel on the desktop it doesn't switch between desktops rather than it shows me some kind of "activities" (I don't remember exactly) with my desktop top-left, a brand-new desktop (with no plasmoids on that and with the default air background) top-right and two empty desktops (with gray-white chequered pattern) bottom. Below the two desktops above there is a magnifier and a "setting-like" icon. Which mode is it? Can it help to determine "where" kwin is in that state? Maye I found out how you can get back your keyboard. First of all you have to minimize all of your windows then open the context menu on your desktop and choose "Command...". Open its preferences dialog and go to the "User Interface" tab. Now switch to the other one. Click OK and you have your keyboard back. At least it worked for me this time. This bug is still present on KDE 4.3 RC 1. Still in 4.3.3. It usually happen when I'm doing a lot of copy/paste (Ctrl+C, Ctrl+V). Looks like I'm pressing some strange combination instead. I had to restart kwin to have keyboard work again. Sounds as if a modifier got stuck, therefore: Any idea what "strange" combination this might be? (I.e. do you think the ctrl key got stuck?) CTRL button often gets stuck, and I think it's an X Server bug. Eg. pressing CTRL, releasing it and then using mouse wheel in the browser results in zooming. hi. there's another kwin/keyboard freeze bug (https://bugs.kde.org/show_bug.cgi?id=203804). it's triggered in a different way mostly penetrating alt+tab randomly. but the restults is somehow the same. how to debug it? They tend to say, you can also get rid of this bug temporarily when you right click on the topmost bar of a window, making the context menu appear. I could not not test it, though. *** This bug has been marked as a duplicate of bug 171685 *** |
