The patented jitter eliminator must periodically unlock and re-sync because the digital stream is so poor. This behavior is the result of the ESS's otherwise excellent jitter recovery logic. The default jitter rejection values used by ESS based DACs recognize the extreme noise as signal errors, so the DAC automatically disconnects and reconnects in attempt to achieve a more stable lock of the incoming S/PDIF signal.
#POWER SET WITH SET AS ELEMENT TV#
Symptom: While using the optical output from an LG C8/C9 or Samsung TV in conjunction with a high-performance DAC, you may experience audio dropouts several times per minute.Ĭause: In short, the optical output of symptomatic TVs show pronounced jitter and low level n*100Hz transients throughout the audible frequency range. Please see below for a high level explanation, or skip to Solution. LG has acknowledged the behavior, but no official resolution has been shared by LG as of December 2021. ** We first shared our findings with engineers at LG in August 2021. The solution was to add the device to tlp's USB power saving blacklist." In Linux: One owner writes, "The udev rule I had in place was being overridden by tlp power saving (which I didn't know was running).While this configuration may help, a USB hub is a more reliable solution. Open Control Panel -> Hardware and Sound -> Power Options -> Change Plan Settings -> Change Advanced Plan Settings -> USB Settings -> Set 'USB selective suspend setting' to Disabled. In Windows: Try disabling power management options.A hub guarantees power availability to connected equipment and bypasses power management misconfigurations. Try a 3-foot or shorter USB cable (also refer to 'USB device is not recognized by PC').
Some Docks, Keyboard Video Monitor Switches (KVMs), or 2-way USB Switches have been known to cause random dropouts of USB audio.Newer operating systems (Win 7, 8, 10, and OS X 10.9+) sometimes utilize unnecessary power management configurations, which can limit power availability to a DAC. Causes: Unsuitable USB cable, or use of a dock or KVM Switch or USB switch, or undesirable USB power management settings.
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