A possible explanation about the delay at playback while capturing is that the FIFO size reported for each stream is influenced by other action. The patch assumed that it's constant (like other platforms do), but AMD might vary it per state.
The patch below (fix6) takes a hard-coded FIFO size. Check it out. There is one adjustment knob in the patch for an open question; whether the fixed FIFO size is in frames (samples) or in bytes, i.e. if the sample format changes from 32 to 16bit, whether FIFO size changes, too. If the patch was confirmed to work more or less, try to define/undefine AMD_FIXED_FIFO_IN_FRAMES, and check the behavior with S16 or S32 formats (on PA setup and/or aplay/arecord parameters). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1801540 Title: Microphone distorted sound on ALC892/1220 on AMD chipsets Status in Linux: Confirmed Status in linux package in Ubuntu: Won't Fix Status in pulseaudio package in Ubuntu: Won't Fix Bug description: Not sure if I'll report this upstream but there is definitely an issue with microphone recording on my desktop, this is not happening on my laptop which has a different codec. Already tried all workarounds possible, no luck. Only with my desktop with this particular motherboard. No issues in Windows, the sound recorded in there is distorted and has some static and robotic tone on high-pitch. alsa-info on the attachments To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1801540/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
