With 5.7-rc2, after resuming from suspend to RAM, I get:
[ 55.679382] pcieport 0000:00:03.1: AER: Multiple Uncorrected (Non-Fatal) error received: 0000:00:00.0 [ 55.679405] pcieport 0000:00:03.1: AER: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, (Requester ID) [ 55.679410] pcieport 0000:00:03.1: AER: device [1022:1453] error status/mask=00100000/04400000 [ 55.679414] pcieport 0000:00:03.1: AER: [20] UnsupReq (First) [ 55.679417] pcieport 0000:00:03.1: AER: TLP Header: 40000004 0a0000ff fffc0e80 00000000 [ 55.679423] amdgpu 0000:0a:00.0: AER: can't recover (no error_detected callback) [ 55.679425] snd_hda_intel 0000:0a:00.1: AER: can't recover (no error_detected callback) [ 55.679455] pcieport 0000:00:03.1: AER: device recovery failed
Then the display freezes and the system basically falls apart (can't even sudo reboot -f, need to use magic sysrq).
I bisected this to "ALSA: hda: Skip controller resume if not needed". Setting snd_hda_intel.power_save=0 resolves the issue.
I am using an ASRock B450 Pro4 with Realtek HDA codec:
[ 1.009400] snd_hda_intel 0000:0a:00.1: enabling device (0000 -> 0002) [ 1.009425] snd_hda_intel 0000:0a:00.1: Force to non-snoop mode [ 1.009653] snd_hda_intel 0000:0c:00.3: enabling device (0000 -> 0002) [ 1.021452] snd_hda_codec_generic hdaudioC0D0: ignore pin 0x7, too many assigned pins [ 1.021461] snd_hda_codec_generic hdaudioC0D0: ignore pin 0x9, too many assigned pins [ 1.021471] snd_hda_codec_generic hdaudioC0D0: ignore pin 0xb, too many assigned pins [ 1.021480] snd_hda_codec_generic hdaudioC0D0: ignore pin 0xd, too many assigned pins [ 1.021482] snd_hda_codec_generic hdaudioC0D0: autoconfig for Generic: line_outs=0 (0x0/0x0/0x0/0x0/0x0) type:line [ 1.021482] snd_hda_codec_generic hdaudioC0D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 1.021483] snd_hda_codec_generic hdaudioC0D0: hp_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 1.021484] snd_hda_codec_generic hdaudioC0D0: mono: mono_out=0x0 [ 1.021484] snd_hda_codec_generic hdaudioC0D0: dig-out=0x3/0x5 [ 1.021485] snd_hda_codec_generic hdaudioC0D0: inputs: [ 1.046053] snd_hda_codec_realtek hdaudioC1D0: autoconfig for ALC892: line_outs=1 (0x14/0x0/0x0/0x0/0x0) type:line [ 1.046054] snd_hda_codec_realtek hdaudioC1D0: speaker_outs=0 (0x0/0x0/0x0/0x0/0x0) [ 1.046055] snd_hda_codec_realtek hdaudioC1D0: hp_outs=1 (0x1b/0x0/0x0/0x0/0x0) [ 1.046055] snd_hda_codec_realtek hdaudioC1D0: mono: mono_out=0x0 [ 1.046056] snd_hda_codec_realtek hdaudioC1D0: inputs: [ 1.046057] snd_hda_codec_realtek hdaudioC1D0: Front Mic=0x19 [ 1.046058] snd_hda_codec_realtek hdaudioC1D0: Rear Mic=0x18 [ 1.046058] snd_hda_codec_realtek hdaudioC1D0: Line=0x1a
I also have an ASUS RX 480 graphics card with HDMI audio output.