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Diffstat (limited to 'known-bugs.txt')
| -rw-r--r-- | known-bugs.txt | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/known-bugs.txt b/known-bugs.txt index 6410b55bc..d06c2ee59 100644 --- a/known-bugs.txt +++ b/known-bugs.txt @@ -135,11 +135,28 @@ Extreme CPU usage/hangs when using SDL and PulseAudio [FS#3294] OpenTTD can be extremely slow/use a lot of CPU when the sound is played via SDL and then through PulseAudio's ALSA wrapper. Under the same configuration OpenTTD, or rather SDL, might hang when exiting - the game. This setup seems to be the default configuration for - Ubuntu 9.04 and later. For Ubuntu this issue can be solved by - installing the 'libsdl1.2debian-pulseaudio' package from Ubuntu's - Universe repository. For other distributions a similar package needs - to be installed. + the game. This problem is seen most in Ubuntu 9.04 and higher. + + This is because recent versions of the PulseAudio sound server are + configured to use timer-based audio scheduling rather than + interrupt-based audio scheduling. Configuring PulseAudio to force + use of interrupt-based scheduling may resolve sound problems for + some users. Under recent versions of Ubuntu Linux (9.04 and higher) + this can be accomplished by changing the following line in the + /etc/pulsa/default.pa file: + load-module module-udev-detect + to + load-module module-udev-detect tsched=0 + Note that PulseAudio must be restarted for changes to take effect. + Older versions of PulseAudio may use the module-hal-detect module + instead. Adding tsched=0 to the end of that line will have a similar + effect. + + Another possible solution is selecting the "pulse" backend of SDL + by either using "SDL_AUDIODRIVER=pulse openttd" at the command + prompt or installing the 'libsdl1.2debian-pulseaudio' package from + Ubuntu's Universe repository. For other distributions a similar + package needs to be installed. OpenTTD not properly resizing with SDL on X [FS#3305] Under some X window managers OpenTTD's window does not properly |