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I was in the control center last night trying to enable Jack which never works, so I gave up and put it back on autodetect. I never had a problem with that before. Now, though, my system sounds don't work. The "Test Sound" button plays sound, and XMMS will play all sounds, but system notifications won't play when the event happens or in the control center, but those sounds will again play in XMMS. XMMS is outputting through Arts. I don't really know what happened. /dev/sound/ doesn't exist nor does /dev/dsp/. I'm on Debian Sarge with an integrated Intel sound chip.
What exactly did you try? After enabling arts, enabling all sounds, is arts running? did you reset the X environment? The notification daemon is configured to send all events to arts? are the notifications enabled at all?
The command artsd spits out Can't open /dev/dsp because it's in use. Of course the sounds are enabled, the sound system is set to 'autodetect' which was never any problem before. its just weird because this problem just happened and i didnt even screw with anything!
Oh and my sig is from a long time ago. I've gotten to know a lot more about Linux since then.
Log out KDE, login in one of those TTYs are root, and enter
cat /dev/urandom > /dev/dsp ... then CTRL+C
If it's say permission denied, set the permissions.
If it's says can't open /dev/dsp, we've got a problem
If it's says /dev/dsp file or directory does not exist, we've got a module problem perhaps.
If it's says nothing, but a new line and no sound, we've got a volume issue.
and if it give static, we know the modules are working and the permissions for root are working at least.
If it works, try as a normal user.
If it says permission denied, we have a permission issue. Which is IMHO, perhaps the problem so far. If it works, it's maybe a mixed KDE settings and sound issue.