Takashi Iwai <tiwai@xxxxxxx> 於 2019年5月24日 週五 下午1:43寫道： > > On Fri, 24 May 2019 07:10:17 +0200, > Jian-Hong Pan wrote: > > > > We have an ASUS E406MA laptop equipped with Intel N5000 CPU. After > > system suspend & resume, the audio playback does not work anymore. The > > device for sound output is listed as a headphone device. Plugging in > > headphones no sound is audible neither. > > > > Here are the error messages after resume: > > > > [ 184.525681] snd_hda_intel 0000:00:0e.0: azx_get_response timeout, switching to polling mode: last cmd=0x20bf8100 > > [ 185.528682] snd_hda_intel 0000:00:0e.0: No response from codec, disabling MSI: last cmd=0x20bf8100 > > [ 186.532683] snd_hda_intel 0000:00:0e.0: azx_get_response timeout, switching to single_cmd mode: last cmd=0x20bf8100 > > [ 186.736838] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 > > [ 186.738742] snd_hda_codec_realtek hdaudioC0D0: Unable to sync register 0x2b8000. -5 > > [ 186.767080] snd_hda_codec_hdmi hdaudioC0D2: Unable to sync register 0x2f0d00. -5 > > > > After bisect, we found reverting the commit b5a236c175b0 "ALSA: hda - > > Enforces runtime_resume after S3 and S4 for each codec" can solve this > > issue on Linux stable 5.0.x series. > > > > This reverts commit a57af6d07512716b78f1a32d9426bcdf6aafc50c. > > > > Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=203623 > > Fixes: a57af6d07512 ("ALSA: hda - Enforces runtime_resume after S3 and S4 for each codec") > > Cc: <stable@xxxxxxxxxxxxxxx> # 5.0.x > > Signed-off-by: Jian-Hong Pan <jian-hong@xxxxxxxxxxxx> > > I thought this revert isn't needed if the i915 GLK fix is applied? If the i915 GLK fix is applied, then this revert is not needed. I have also sent the "i915 GLK" to stable mail list for Linux stable 5.1.x. But I am still wondering for 5.0.x, due to the commit dependency. Any idea for Linux stable 5.0.x will be appreciated. Jain-Hong Pan > You must hit the very same problem even after reverting this when the > machine goes to suspend while playing a stream. So the revert is no > proper fix at all. > > > thanks, > > Takashi
