This device randomly changes 5.1 audio channels.
This device randomly changes 5.1 audio channels.
I've been using the Sound Blaster AE-5 Plus for nearly a year now. My goal was to integrate my 5.1 audio system. It functions well overall, but there are two significant issues. The volume control on Windows isn't responding anymore—I have to adjust it manually on the receiver. Every few minutes, the channel positions shift about 90 degrees to the left. Center moves to right, Left becomes center, Left Rear stays left, and Right Rear moves to Left Rear, Right stays at rear. The sound card is located in the last PCIe slot on my motherboard; the others are blocked by the GPU. It connects via a Toslink optical cable to the audio receiver. My temporary fix: switch to headphone mode and then back to speakers, though it's inconvenient, especially during intense gameplay.
The setup details: Windows audio device settings show "Selecting SPDIF-Out" but no sound appears. The Sound Blaster Command app needs this option enabled for Dolby or DTS playback, but only works in stereo. I can enable it in the Digital tab to make SPDIF-Out functional, though it only supports stereo. The receiver correctly identifies Dolby and DTS encoders.
I've tried several fixes: others with similar problems switched the PCIe speed (to 1x) and updated the BIOS. On my machine, I can only adjust the PCIe speed of the fastest slot, which is where the GPU sits. After updating the BIOS, I ensured the Sound Blaster Command app and drivers were current. All efforts seemed to yield no improvement.
Current system specs: Windows 11 Pro 24H2, CPU AMD Ryzen 9 5950X, GPU RTX 4090, motherboard msi mag x570 tomahawk wifi, sound card Sound Blaster AE-5 Plus (driver 6.0.105.65).
I've checked forums and patch notes—Creative released a fix with a software update, but I'm unsure if I missed something or what the issue truly is.
I've faced the same motherboard problem for nearly three years. The available solutions are limited. Recent BIOS updates helped reduce the issue. When audio changes, open Windows Settings → Audio → Playback settings. Select your sound device and disable audio enhancements in the menu. Re-enable them gradually; the sound may stabilize over time. Adjusting APCIe settings in the BIOS could also provide further relief. This remains an unresolved concern.