id summary reporter owner description type status component version resolution keywords cc guest host 4605 Ubuntu Linux guest audio output slow and distorted Larry Shurr "There's some discussion in community forums related to this, but it doesn't go very far. Couldn't find any similar report in Bugtracker. Sorry if I overlooked. This is an Ubuntu Linux 9.0.4 guest in Virtualbox 3.0.2 r49928 on a Vista SP1 host, a Presario C751 notebook. Following initial installation of the guest, sound playback works well. Only after shutting down the VM completely and then restarting will sound playback slow down with a commensurate lowering of pitch as though the clock is running slow. Sound distortion such as ""chirping"" and stuttering may be evident as well. The problem is temporarily repaired by reinstalling the Guest Additions and rebooting the VM (reboot only, don't shut it down!). Having done that, audio playback is restored to normal and will remain normal between reboots of the VM. Only after the VM is shut down will the problem recur. The same problem occurred in V 2.2.4 r47978. FWIW Video output seems to be affected as well. A Windows XP SP3 guest does not seem to exhibit the same problem. Using a VM for multimedia apps is silly, but what's amazing is how well it works when it works. It's not the way to go, but even if you don't, Ubuntu, for example, makes sounds like the drumbeat figure when GDM is ready for login, the Ubuntu ""theme"" as GNOME comes up and other sounds such as error notifications and the like and it is irritating for them to be slow, off pitch and distorted. More importantly, the fact that it sometimes works and sometimes doesn't implies an underlying problem that may be more significant. If I can, I will dissect the Guest Additions installation and try to determine what seems to ""fix"" the problem." defect reopened audio VirtualBox 3.0.2 slow tempo low pitch distortion Linux Windows