On Mon, 30 May 2022 09:41:31 +0200, Marios Levogiannis wrote: > > Set microphone pins 0x18 (rear) and 0x19 (front) to VREF_50 to fix the > microphone noise on ASUS TUF B550M-PLUS which uses the ALCS1200A codec. > The initial value was VREF_80. > > The same issue is also present on Windows using both the default Windows > driver and all tested Realtek drivers before version 6.0.9049.1. Comparing > Realtek driver 6.0.9049.1 (the first one without the microphone noise) to > Realtek driver 6.0.9047.1 (the last one with the microphone noise) > revealed that the fix is the result of setting pins 0x18 and 0x19 to > VREF_50. > > This fix may also work for other boards that have been reported to have > the same microphone issue and use the ALC1150 and ALCS1200A codecs, since > these codecs are similar and the fix in the Realtek driver on Windows is > common for both. However, it is currently enabled only for ASUS TUF > B550M-PLUS as this is the only board that could be tested. > > Signed-off-by: Marios Levogiannis <marios.levogiannis@xxxxxxxxx> Thanks, applied now. Takashi
