The same problem here after an upgrade to Karmic (amd64).
I did some testing and came up with the following two workarounds:
1)Start the game emulation from the terminal using the "fceu" command.
2) Disable Pulseaudio before starting "gfceu".
The 1st workaround bypasses the graphical front-end (gfceu) while the 2nd
workaround ensures that the audio is not being passed to the pulseaudio daemon.
Checking the dependencies of the "gfceu" package i would guess that the problem
lies somewhere in the combination of the "alsa-oss" package and pulseaudio.
Greetings René
P.s. For the sake of completeness i will list the steps to be taken for each
work-around.
Work-around 1:
* Open a terminal (Applications -> Utilities -> Terminal)
* start "fceu" with the following command:
fceu /path_to_emulator_rom/emulated_game.nes
Work-around 2:
* Open a terminal (Applications -> Utilities -> Terminal)
* Copy the "client.conf" file from "/etc/pulse/" to "~/.pulse/" using the
following command (this only needs to be done once):
cp /etc/pulse/client.conf ~/.pulse/
* Edit the client.conf file in ~/.pulse/
replace the line: ; autospawn = yes
with: autospawn = no
* Kill the pulseaudio deamon with the following command:
pulseaudio -k
* Play the game using the graphical front-end (gfceu)
* After playing the game pulseaudio can again be allowed to autospawn by
editing
the mentioned file above and inserting an ";" before autospawn = no.
--
games unplayable when audio is enabled, massive slowdown.
https://bugs.launchpad.net/bugs/424858
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