Comment # 25
on bug 101900
from Direx
The printks indeed only show up when the computer boots or when the display comes back from DPMS. I don't get any printks when playing audio streams. (In reply to Alex Deucher from comment #24) > Can you see what channels is set to in dce110_se_audio_setup() in > dce_stream_encoder.c? Does forcing it to 0xff help? Ok, here's my change: diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c index e42b6eb1c1f0..19befbf594c2 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c @@ -1320,6 +1320,9 @@ static void dce110_se_audio_setup( speakers = audio_info->flags.info.ALLSPEAKERS; channels = speakers_to_channels(audio_info->flags.speaker_flags).all; + printk(KERN_WARNING "hbrlog: channels set to %d, forcing 0xff", channels); + channels = 0xff; + /* setup the audio stream source select (audio -> dig mapping) */ REG_SET(AFMT_AUDIO_SRC_CONTROL, 0, AFMT_AUDIO_SRC_SELECT, az_inst); And that's what I get in dmesg: [ 10.920144] hbrlog: channels set to 255, forcing 0xff -> So unfortunately no change here. //BTW: my DP monitor is reporting 3 channels, which also sounds good to me
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