Reply To: Problem Recording using QU 16 USB B with cubase 5

[Andreas]

Final note: With these settings (Buffers Standard, 256 Samples) systen went well for another 6 hours, 9 in total.
From what I’ve observed here I think we may need to check in other directions as well. My (formerly retired) notebook carries is a rather pure installation, intended for live recordings only, so there is only little background activity. With lower buffer settings audio stability gets more sensitive to actions I do on the surface. Moving the mouse around already produced some clicks on lowest setting. Some background tasks may check for updates, optimize disks, scan for malware or similar, which make things worse. A bad driver for hard disk (i.e. software RAID) or network controller may be the culprit as well.
Even switching from nVidia to ATI does not always seem to cure the issue but only change the symptoms.
Always remember: Audio streaming via USB requires the driver to schedule and receive packets each 125µSec. This requires a well designed hardware and driver backend. Any driver which locks the system for a lengthy period (talking about fractions of a mSec here) may kill the audio stream.