Hi, patch_realtek.c maintainer:
I see one issue that reboot from windows and boot to ubuntu, the audio lost from speaker, I suspect there are some bugs in patch_realtek.c drivers, the device is ALC295 and the device id is 0x10ec0295.
I have done the below experiments:
1. reboot from windows to windows, the audio is persist .
2. reboot from windows to ubuntu, the audio lost from speaker, but can hear if I hotplug one earphone.
3. if the issue reproduce after reboot from windows, reboot the ubuntu can't restore the audio, I suspect it's warm reset.
4. if I write the port 0xcf9 with 0xe to do cold reset, the audio can restore.
5. if I do suspend/resume, the audio can restore, I suspect do cold boot and suspend will trigger the platform reset to reset the ALC295.
6. if I do double function reset (write the verb 0x7ff in alc_init), the audio is still can't restore.
snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /* Function reset */
snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /* double Function reset */
7. the issue is first found on kernel 4.19.50, I still see the issue with the latest kernel 5.2-rc2, is it possible windows change some default registers, but ALC295 don't initialize the register?
Maybe your machine has an external amplifier which needs to be set by
software before it can work.
On 2019/7/4 下午8:02, He, Bo wrote:
> Hi, patch_realtek.c maintainer:
> I see one issue that reboot from windows and boot to ubuntu, the audio lost from speaker, I suspect there are some bugs in patch_realtek.c drivers, the device is ALC295 and the device id is 0x10ec0295.
>
> I have done the below experiments:
> 1. reboot from windows to windows, the audio is persist .
> 2. reboot from windows to ubuntu, the audio lost from speaker, but can hear if I hotplug one earphone.
> 3. if the issue reproduce after reboot from windows, reboot the ubuntu can't restore the audio, I suspect it's warm reset.
> 4. if I write the port 0xcf9 with 0xe to do cold reset, the audio can restore.
> 5. if I do suspend/resume, the audio can restore, I suspect do cold boot and suspend will trigger the platform reset to reset the ALC295.
> 6. if I do double function reset (write the verb 0x7ff in alc_init), the audio is still can't restore.
> snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /* Function reset */
> snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /* double Function reset */
> 7. the issue is first found on kernel 4.19.50, I still see the issue with the latest kernel 5.2-rc2, is it possible windows change some default registers, but ALC295 don't initialize the register?
>
Hi Bo He,
Could you help to dump info for us?
Please use attach file to get results.
./alsa-info.sh --no-upload
You will find dump file in folder /tmp/alsa-info.txt-????????.
Please run one time in normal state and one time in fail state.
Please send two result files to me.
BR,
Kailang
> -----Original Message-----
> From: He, Bo <[email protected]>
> Sent: Thursday, July 4, 2019 8:02 PM
> To: Kailang <[email protected]>; [email protected];
> [email protected]
> Cc: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected]
> Subject: audio lost from speaker after reboot from windows on the device
> ALC295
>
> Hi, patch_realtek.c maintainer:
> I see one issue that reboot from windows and boot to ubuntu, the audio
> lost from speaker, I suspect there are some bugs in patch_realtek.c drivers,
> the device is ALC295 and the device id is 0x10ec0295.
>
> I have done the below experiments:
> 1. reboot from windows to windows, the audio is persist .
> 2. reboot from windows to ubuntu, the audio lost from speaker, but can hear if
> I hotplug one earphone.
> 3. if the issue reproduce after reboot from windows, reboot the ubuntu can't
> restore the audio, I suspect it's warm reset.
> 4. if I write the port 0xcf9 with 0xe to do cold reset, the audio can restore.
> 5. if I do suspend/resume, the audio can restore, I suspect do cold boot and
> suspend will trigger the platform reset to reset the ALC295.
> 6. if I do double function reset (write the verb 0x7ff in alc_init), the audio is
> still can't restore.
> snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /*
> Function reset */ snd_hda_codec_write(codec, 0x01, 0,
> AC_VERB_SET_CODEC_RESET, 0); /* double Function reset */ 7. the issue is
> first found on kernel 4.19.50, I still see the issue with the latest kernel 5.2-rc2,
> is it possible windows change some default registers, but ALC295 don't
> initialize the register?
>
> ------Please consider the environment before printing this e-mail.
Sorry!!
Forgot attach file.
> -----Original Message-----
> From: Kailang
> Sent: Friday, July 5, 2019 10:41 AM
> To: 'He, Bo' <[email protected]>; [email protected];
> [email protected]
> Cc: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected]
> Subject: RE: audio lost from speaker after reboot from windows on the device
> ALC295
>
> Hi Bo He,
>
> Could you help to dump info for us?
> Please use attach file to get results.
>
> ./alsa-info.sh --no-upload
>
> You will find dump file in folder /tmp/alsa-info.txt-????????.
>
> Please run one time in normal state and one time in fail state.
> Please send two result files to me.
>
> BR,
> Kailang
>
> > -----Original Message-----
> > From: He, Bo <[email protected]>
> > Sent: Thursday, July 4, 2019 8:02 PM
> > To: Kailang <[email protected]>; [email protected];
> > [email protected]
> > Cc: [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected]
> > Subject: audio lost from speaker after reboot from windows on the
> > device
> > ALC295
> >
> > Hi, patch_realtek.c maintainer:
> > I see one issue that reboot from windows and boot to ubuntu, the
> > audio lost from speaker, I suspect there are some bugs in
> > patch_realtek.c drivers, the device is ALC295 and the device id is
> 0x10ec0295.
> >
> > I have done the below experiments:
> > 1. reboot from windows to windows, the audio is persist .
> > 2. reboot from windows to ubuntu, the audio lost from speaker, but can
> > hear if I hotplug one earphone.
> > 3. if the issue reproduce after reboot from windows, reboot the ubuntu
> > can't restore the audio, I suspect it's warm reset.
> > 4. if I write the port 0xcf9 with 0xe to do cold reset, the audio can restore.
> > 5. if I do suspend/resume, the audio can restore, I suspect do cold
> > boot and suspend will trigger the platform reset to reset the ALC295.
> > 6. if I do double function reset (write the verb 0x7ff in alc_init),
> > the audio is still can't restore.
> > snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /*
> > Function reset */ snd_hda_codec_write(codec, 0x01, 0,
> > AC_VERB_SET_CODEC_RESET, 0); /* double Function reset */ 7. the issue
> > is first found on kernel 4.19.50, I still see the issue with the
> > latest kernel 5.2-rc2, is it possible windows change some default
> > registers, but ALC295 don't initialize the register?
> >
> > ------Please consider the environment before printing this e-mail.
Hi, Kailiang:
Thanks for your tools, here are the two enclosed alsa-info with and without sound.
-----Original Message-----
From: Kailang <[email protected]>
Sent: Friday, July 5, 2019 10:42 AM
To: He, Bo <[email protected]>; [email protected]; [email protected]
Cc: [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]
Subject: RE: audio lost from speaker after reboot from windows on the device ALC295
Sorry!!
Forgot attach file.
> -----Original Message-----
> From: Kailang
> Sent: Friday, July 5, 2019 10:41 AM
> To: 'He, Bo' <[email protected]>; [email protected];
> [email protected]
> Cc: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected]
> Subject: RE: audio lost from speaker after reboot from windows on the
> device
> ALC295
>
> Hi Bo He,
>
> Could you help to dump info for us?
> Please use attach file to get results.
>
> ./alsa-info.sh --no-upload
>
> You will find dump file in folder /tmp/alsa-info.txt-????????.
>
> Please run one time in normal state and one time in fail state.
> Please send two result files to me.
>
> BR,
> Kailang
>
> > -----Original Message-----
> > From: He, Bo <[email protected]>
> > Sent: Thursday, July 4, 2019 8:02 PM
> > To: Kailang <[email protected]>; [email protected];
> > [email protected]
> > Cc: [email protected]; [email protected]; [email protected];
> > [email protected]; [email protected]; [email protected]
> > Subject: audio lost from speaker after reboot from windows on the
> > device
> > ALC295
> >
> > Hi, patch_realtek.c maintainer:
> > I see one issue that reboot from windows and boot to ubuntu, the
> > audio lost from speaker, I suspect there are some bugs in
> > patch_realtek.c drivers, the device is ALC295 and the device id is
> 0x10ec0295.
> >
> > I have done the below experiments:
> > 1. reboot from windows to windows, the audio is persist .
> > 2. reboot from windows to ubuntu, the audio lost from speaker, but
> > can hear if I hotplug one earphone.
> > 3. if the issue reproduce after reboot from windows, reboot the
> > ubuntu can't restore the audio, I suspect it's warm reset.
> > 4. if I write the port 0xcf9 with 0xe to do cold reset, the audio can restore.
> > 5. if I do suspend/resume, the audio can restore, I suspect do cold
> > boot and suspend will trigger the platform reset to reset the ALC295.
> > 6. if I do double function reset (write the verb 0x7ff in alc_init),
> > the audio is still can't restore.
> > snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_CODEC_RESET, 0); /*
> > Function reset */ snd_hda_codec_write(codec, 0x01, 0,
> > AC_VERB_SET_CODEC_RESET, 0); /* double Function reset */ 7. the
> > issue is first found on kernel 4.19.50, I still see the issue with
> > the latest kernel 5.2-rc2, is it possible windows change some
> > default registers, but ALC295 don't initialize the register?
> >
> > ------Please consider the environment before printing this e-mail.