Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Takashi Iwai]

On Wed, 12 Feb 2020 10:37:30 +0100,
 wrote:
> 
> Hi Takashi
> 
> Sorry to bother you again, during this period I do some experiment then issue 
> may be fixed by my local patch, but I am not sure, however may I have your 
> suggestion if you are available.
> I put snd_hda_codec_read and snd_hda_codec_set_power_to_all ahead then add 
> debug log in function haswell_verify_D0 I found my changes cause cvt_nid and 
> nid could get "power state: 1" every single time after re-plug type-c cable 
> then playing music, you can see flash_once_fixed_messages in details. But 
> without my patch which nid gets "power state: 0" and external type-c monitor 
> flashes once after playing music. Assume my finding is right, do we have 
> chance to submit code to fix issue? Thanks.

Is the issue reproduced with the latest upstream code (or at least
5.4.y stable)?
Then yeah, we need to take a deeper look.


thanks,

Takashi

> 
> With patch
> 2020-02-12T00:58:27.496016-08:00 ERR kernel: [   47.729823] @@@ cvt_nid power 
> state: 1
> 2020-02-12T00:58:27.496024-08:00 ERR kernel: [   47.729883] @@@ nid power 
> state: 1
> 
> Without patch
> 2020-02-12T00:55:36.795016-08:00 ERR kernel: [  125.047502] @@@ cvt_nid power 
> state: 1
> 2020-02-12T00:55:36.795026-08:00 ERR kernel: [  125.047565] @@@ nid power 
> state: 0
> 
> -Original Message-
> From: Takashi Iwai  
> Sent: Wednesday, January 8, 2020 2:18 PM
> To: Kao. Lucien (TPE) 
> Cc: nathan.d.ciob...@linux.intel.com; Cheng. AJ (TPE) ; 
> intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; Wang. CindyXT 
> (TPE) ; Ye. Nelson (TPE) ; 
> Yap. Shane (TPE) ; Tseng. Evan (TPE) 
> 
> Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
> file after unplug and re-plug the monitor
> 
> On Wed, 08 Jan 2020 04:07:17 +0100,
>  wrote:
> > 
> > Hi Takashi
> > 
> > Is the attachment what you suspect? That merged to our kernel v4.19 
> > already, have any suggestions? Thanks.
> 
> Then I have no concrete idea.  It might be some other changes in HDMI codec 
> driver or it might be a fix in i915 graphics side, or even thunderbolt or 
> whatever, too...
> 
> Takashi
> 
> > 
> > -Original Message-
> > From: Takashi Iwai 
> > Sent: Wednesday, January 8, 2020 2:57 AM
> > To: Nathan Ciobanu 
> > Cc: Kao. Lucien (TPE) ; Cheng. AJ (TPE) 
> > ; intel-gfx@lists.freedesktop.org; 
> > alsa-de...@alsa-project.org; Wang. CindyXT (TPE) 
> > ; Ye. Nelson (TPE) ; 
> > Yap. Shane (TPE) ; Tseng. Evan (TPE) 
> > 
> > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a 
> > video file after unplug and re-plug the monitor
> > 
> > On Tue, 07 Jan 2020 18:24:57 +0100,
> > Nathan Ciobanu wrote:
> > > 
> > > On Mon, Jan 06, 2020 at 08:08:04AM +, lucien_...@compal.com wrote:
> > > > Hi Takashi
> > > > 
> > > > We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please 
> > > > refer to attachment), the result is positive which symptom doesn't 
> > > > happen anymore once I played music or video sound output through Dell 
> > > > S2718D Type-C monitor. It seems had some fix in latest kernel.
> > > 
> > > Takashi, can you point to the patch series you suspect may have fixed 
> > > this issue? 
> > 
> > The first suspect would be
> > 2756d9143aa517b97961e85412882b8ce31371a6
> > ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips
> > 
> > Takashi
> > 
> > > 
> > > Thanks,
> > > Nathan
> > > > 
> > > > Thanks.
> > > > 
> > > > 
> > > > -Original Message-
> > > > From: Takashi Iwai 
> > > > Sent: Friday, January 3, 2020 5:16 PM
> > > > To: Cheng. AJ (TPE) 
> > > > Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
> > > > nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
> > > > ; Ye. Nelson (TPE) 
> > > > ; Yap. Shane (TPE) ; 
> > > > Kao. Lucien (TPE) ; Tseng. Evan (TPE) 
> > > > 
> > > > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when 
> > > > play a video file after unplug and re-plug the monitor
> > > > 
> > > > On Fri, 03 Jan 2020 02:57:03 +0100,  wrote:
> > > > > 
> > > > > Hi Sirs,
> > > > > Here is chromebook SW team from Compal.
> > > > > As the mail title, we hit issue that the external monitor will flash 
> > > > > once when play video after hot pluging.
> > > > > We can reproduce not only on chromebook but also ubuntu 16.04.
> > > > > There has higher failure rate with Dell Solomon dock and Dell S2718D 
> > > > > monitor.
> > > > > 
> > > > > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can 
> > > > > fix this issue.(as the attachment) May need your help to review and 
> > > > > advice. Thanks.
> > > > > 
> > > > > Here is the issue number in gitlab for more detail.
> > > > > https://gitlab.freedesktop.org/drm/intel/issues/318
> > > > 
> > > > Could you check whether it still happens with the latest upstream 
> > > > kernel, at least 5.4.y, if it wasn't tested yet?
> > > > 
> > > > I don't want to put a long delay just because of random reason unless 
> > >

Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Lucien_Kao]

Hi Takashi

Is the attachment what you suspect? That merged to our kernel v4.19 already, 
have any suggestions? Thanks.

-Original Message-
From: Takashi Iwai  
Sent: Wednesday, January 8, 2020 2:57 AM
To: Nathan Ciobanu 
Cc: Kao. Lucien (TPE) ; Cheng. AJ (TPE) 
; intel-gfx@lists.freedesktop.org; 
alsa-de...@alsa-project.org; Wang. CindyXT (TPE) ; Ye. 
Nelson (TPE) ; Yap. Shane (TPE) ; 
Tseng. Evan (TPE) 
Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
file after unplug and re-plug the monitor

On Tue, 07 Jan 2020 18:24:57 +0100,
Nathan Ciobanu wrote:
> 
> On Mon, Jan 06, 2020 at 08:08:04AM +, lucien_...@compal.com wrote:
> > Hi Takashi
> > 
> > We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please 
> > refer to attachment), the result is positive which symptom doesn't happen 
> > anymore once I played music or video sound output through Dell S2718D 
> > Type-C monitor. It seems had some fix in latest kernel.
> 
> Takashi, can you point to the patch series you suspect may have fixed this 
> issue? 

The first suspect would be
2756d9143aa517b97961e85412882b8ce31371a6
ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips


Takashi

> 
> Thanks,
> Nathan
> > 
> > Thanks.
> > 
> > 
> > -Original Message-
> > From: Takashi Iwai 
> > Sent: Friday, January 3, 2020 5:16 PM
> > To: Cheng. AJ (TPE) 
> > Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
> > nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
> > ; Ye. Nelson (TPE) ; 
> > Yap. Shane (TPE) ; Kao. Lucien (TPE) 
> > ; Tseng. Evan (TPE) 
> > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play 
> > a video file after unplug and re-plug the monitor
> > 
> > On Fri, 03 Jan 2020 02:57:03 +0100,
> >  wrote:
> > > 
> > > Hi Sirs,
> > > Here is chromebook SW team from Compal.
> > > As the mail title, we hit issue that the external monitor will flash once 
> > > when play video after hot pluging.
> > > We can reproduce not only on chromebook but also ubuntu 16.04.
> > > There has higher failure rate with Dell Solomon dock and Dell S2718D 
> > > monitor.
> > > 
> > > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix 
> > > this issue.(as the attachment) May need your help to review and advice. 
> > > Thanks.
> > > 
> > > Here is the issue number in gitlab for more detail.
> > > https://gitlab.freedesktop.org/drm/intel/issues/318
> > 
> > Could you check whether it still happens with the latest upstream kernel, 
> > at least 5.4.y, if it wasn't tested yet?
> > 
> > I don't want to put a long delay just because of random reason unless it's 
> > really mandatory.  I'm wondering whether the recent write-sync change 
> > improves the situation, so let's check the recent code.
> > 
> > 
> > thanks,
> > 
> > Takashi
> > 
> > > 
> > > 
> > > 
> > > AJ Cheng
> > > NID/NID1
> > > e-mail: aj_ch...@compal.com
> > > Tel:  +886-2-8797-8599 ext. 17561
> > > Mobile : +886-932827829
> > > COMPAL Electronics, Inc.
> > > 
> > > [2 flash_once.diff ]
> > > 
> > > ___
> > > Alsa-devel mailing list
> > > alsa-de...@alsa-project.org
> > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 
> 


0001-UPSTREAM-ALSA-hda-Fix-intermittent-CORB-RIRB-stall-o.patch
Description: 0001-UPSTREAM-ALSA-hda-Fix-intermittent-CORB-RIRB-stall-o.patch
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Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Takashi Iwai]

On Wed, 08 Jan 2020 04:07:17 +0100,
 wrote:
> 
> Hi Takashi
> 
> Is the attachment what you suspect? That merged to our kernel v4.19 already, 
> have any suggestions? Thanks.

Then I have no concrete idea.  It might be some other changes in HDMI
codec driver or it might be a fix in i915 graphics side, or even
thunderbolt or whatever, too...


Takashi

> 
> -Original Message-
> From: Takashi Iwai  
> Sent: Wednesday, January 8, 2020 2:57 AM
> To: Nathan Ciobanu 
> Cc: Kao. Lucien (TPE) ; Cheng. AJ (TPE) 
> ; intel-gfx@lists.freedesktop.org; 
> alsa-de...@alsa-project.org; Wang. CindyXT (TPE) ; 
> Ye. Nelson (TPE) ; Yap. Shane (TPE) 
> ; Tseng. Evan (TPE) 
> Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
> file after unplug and re-plug the monitor
> 
> On Tue, 07 Jan 2020 18:24:57 +0100,
> Nathan Ciobanu wrote:
> > 
> > On Mon, Jan 06, 2020 at 08:08:04AM +, lucien_...@compal.com wrote:
> > > Hi Takashi
> > > 
> > > We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please 
> > > refer to attachment), the result is positive which symptom doesn't happen 
> > > anymore once I played music or video sound output through Dell S2718D 
> > > Type-C monitor. It seems had some fix in latest kernel.
> > 
> > Takashi, can you point to the patch series you suspect may have fixed this 
> > issue? 
> 
> The first suspect would be
> 2756d9143aa517b97961e85412882b8ce31371a6
> ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips
> 
> Takashi
> 
> > 
> > Thanks,
> > Nathan
> > > 
> > > Thanks.
> > > 
> > > 
> > > -Original Message-
> > > From: Takashi Iwai 
> > > Sent: Friday, January 3, 2020 5:16 PM
> > > To: Cheng. AJ (TPE) 
> > > Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
> > > nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
> > > ; Ye. Nelson (TPE) ; 
> > > Yap. Shane (TPE) ; Kao. Lucien (TPE) 
> > > ; Tseng. Evan (TPE) 
> > > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play 
> > > a video file after unplug and re-plug the monitor
> > > 
> > > On Fri, 03 Jan 2020 02:57:03 +0100,
> > >  wrote:
> > > > 
> > > > Hi Sirs,
> > > > Here is chromebook SW team from Compal.
> > > > As the mail title, we hit issue that the external monitor will flash 
> > > > once when play video after hot pluging.
> > > > We can reproduce not only on chromebook but also ubuntu 16.04.
> > > > There has higher failure rate with Dell Solomon dock and Dell S2718D 
> > > > monitor.
> > > > 
> > > > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix 
> > > > this issue.(as the attachment) May need your help to review and advice. 
> > > > Thanks.
> > > > 
> > > > Here is the issue number in gitlab for more detail.
> > > > https://gitlab.freedesktop.org/drm/intel/issues/318
> > > 
> > > Could you check whether it still happens with the latest upstream kernel, 
> > > at least 5.4.y, if it wasn't tested yet?
> > > 
> > > I don't want to put a long delay just because of random reason unless 
> > > it's really mandatory.  I'm wondering whether the recent write-sync 
> > > change improves the situation, so let's check the recent code.
> > > 
> > > 
> > > thanks,
> > > 
> > > Takashi
> > > 
> > > > 
> > > > 
> > > > 
> > > > AJ Cheng
> > > > NID/NID1
> > > > e-mail: aj_ch...@compal.com
> > > > Tel:  +886-2-8797-8599 ext. 17561
> > > > Mobile : +886-932827829
> > > > COMPAL Electronics, Inc.
> > > > 
> > > > [2 flash_once.diff ]
> > > > 
> > > > ___
> > > > Alsa-devel mailing list
> > > > alsa-de...@alsa-project.org
> > > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> > 
> > 
> 
> ==
> =
> This message may contain information which is private, privileged or
> confidential of Compal Electronics, Inc.
> If you are not the intended recipient of this message, please notify the
> sender and destroy/delete the message.
> Any review, retransmission, dissemination or other use of, or taking of any
> action in reliance upon this information,
> by persons or entities other than the intended recipient is prohibited.
> ==
> =
> 
> 
> [1.2  ]
> 
> [2 0001-UPSTREAM-ALSA-hda-Fix-intermittent-CORB-RIRB-stall-o.patch 
> ]
> 
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Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Takashi Iwai]

On Tue, 07 Jan 2020 18:24:57 +0100,
Nathan Ciobanu wrote:
> 
> On Mon, Jan 06, 2020 at 08:08:04AM +, lucien_...@compal.com wrote:
> > Hi Takashi
> > 
> > We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please 
> > refer to attachment), the result is positive which symptom doesn't happen 
> > anymore once I played music or video sound output through Dell S2718D 
> > Type-C monitor. It seems had some fix in latest kernel.
> 
> Takashi, can you point to the patch series you suspect may have fixed this 
> issue? 

The first suspect would be
2756d9143aa517b97961e85412882b8ce31371a6
ALSA: hda - Fix intermittent CORB/RIRB stall on Intel chips


Takashi

> 
> Thanks,
> Nathan
> > 
> > Thanks.
> > 
> > 
> > -Original Message-
> > From: Takashi Iwai  
> > Sent: Friday, January 3, 2020 5:16 PM
> > To: Cheng. AJ (TPE) 
> > Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
> > nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
> > ; Ye. Nelson (TPE) ; Yap. 
> > Shane (TPE) ; Kao. Lucien (TPE) 
> > ; Tseng. Evan (TPE) 
> > Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
> > file after unplug and re-plug the monitor
> > 
> > On Fri, 03 Jan 2020 02:57:03 +0100,
> >  wrote:
> > > 
> > > Hi Sirs,
> > > Here is chromebook SW team from Compal.
> > > As the mail title, we hit issue that the external monitor will flash once 
> > > when play video after hot pluging.
> > > We can reproduce not only on chromebook but also ubuntu 16.04.
> > > There has higher failure rate with Dell Solomon dock and Dell S2718D 
> > > monitor.
> > > 
> > > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix 
> > > this issue.(as the attachment) May need your help to review and advice. 
> > > Thanks.
> > > 
> > > Here is the issue number in gitlab for more detail.
> > > https://gitlab.freedesktop.org/drm/intel/issues/318
> > 
> > Could you check whether it still happens with the latest upstream kernel, 
> > at least 5.4.y, if it wasn't tested yet?
> > 
> > I don't want to put a long delay just because of random reason unless it's 
> > really mandatory.  I'm wondering whether the recent write-sync change 
> > improves the situation, so let's check the recent code.
> > 
> > 
> > thanks,
> > 
> > Takashi
> > 
> > > 
> > > 
> > > 
> > > AJ Cheng
> > > NID/NID1
> > > e-mail: aj_ch...@compal.com
> > > Tel:  +886-2-8797-8599 ext. 17561
> > > Mobile : +886-932827829
> > > COMPAL Electronics, Inc.
> > > 
> > > [2 flash_once.diff ]
> > > 
> > > ___
> > > Alsa-devel mailing list
> > > alsa-de...@alsa-project.org
> > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 
> 
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Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Nathan Ciobanu]

On Mon, Jan 06, 2020 at 08:08:04AM +, lucien_...@compal.com wrote:
> Hi Takashi
> 
> We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please refer 
> to attachment), the result is positive which symptom doesn't happen anymore 
> once I played music or video sound output through Dell S2718D Type-C monitor. 
> It seems had some fix in latest kernel.

Takashi, can you point to the patch series you suspect may have fixed this 
issue? 

Thanks,
Nathan
> 
> Thanks.
> 
> 
> -Original Message-
> From: Takashi Iwai  
> Sent: Friday, January 3, 2020 5:16 PM
> To: Cheng. AJ (TPE) 
> Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
> nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
> ; Ye. Nelson (TPE) ; Yap. 
> Shane (TPE) ; Kao. Lucien (TPE) 
> ; Tseng. Evan (TPE) 
> Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
> file after unplug and re-plug the monitor
> 
> On Fri, 03 Jan 2020 02:57:03 +0100,
>  wrote:
> > 
> > Hi Sirs,
> > Here is chromebook SW team from Compal.
> > As the mail title, we hit issue that the external monitor will flash once 
> > when play video after hot pluging.
> > We can reproduce not only on chromebook but also ubuntu 16.04.
> > There has higher failure rate with Dell Solomon dock and Dell S2718D 
> > monitor.
> > 
> > We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix 
> > this issue.(as the attachment) May need your help to review and advice. 
> > Thanks.
> > 
> > Here is the issue number in gitlab for more detail.
> > https://gitlab.freedesktop.org/drm/intel/issues/318
> 
> Could you check whether it still happens with the latest upstream kernel, at 
> least 5.4.y, if it wasn't tested yet?
> 
> I don't want to put a long delay just because of random reason unless it's 
> really mandatory.  I'm wondering whether the recent write-sync change 
> improves the situation, so let's check the recent code.
> 
> 
> thanks,
> 
> Takashi
> 
> > 
> > 
> > 
> > AJ Cheng
> > NID/NID1
> > e-mail: aj_ch...@compal.com
> > Tel:  +886-2-8797-8599 ext. 17561
> > Mobile : +886-932827829
> > COMPAL Electronics, Inc.
> > 
> > [2 flash_once.diff ]
> > 
> > ___
> > Alsa-devel mailing list
> > alsa-de...@alsa-project.org
> > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel


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Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Lucien_Kao]

Hi Takashi

We verified on Ubuntu 19.10 with kernel 5.4.0.0-050400-generic (please refer to 
attachment), the result is positive which symptom doesn't happen anymore once I 
played music or video sound output through Dell S2718D Type-C monitor. It seems 
had some fix in latest kernel.

Thanks.


-Original Message-
From: Takashi Iwai  
Sent: Friday, January 3, 2020 5:16 PM
To: Cheng. AJ (TPE) 
Cc: intel-gfx@lists.freedesktop.org; alsa-de...@alsa-project.org; 
nathan.d.ciob...@linux.intel.com; Wang. CindyXT (TPE) 
; Ye. Nelson (TPE) ; Yap. Shane 
(TPE) ; Kao. Lucien (TPE) ; Tseng. 
Evan (TPE) 
Subject: Re: [alsa-devel] USB Type-C monitor flashes once when play a video 
file after unplug and re-plug the monitor

On Fri, 03 Jan 2020 02:57:03 +0100,
 wrote:
> 
> Hi Sirs,
> Here is chromebook SW team from Compal.
> As the mail title, we hit issue that the external monitor will flash once 
> when play video after hot pluging.
> We can reproduce not only on chromebook but also ubuntu 16.04.
> There has higher failure rate with Dell Solomon dock and Dell S2718D monitor.
> 
> We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix 
> this issue.(as the attachment) May need your help to review and advice. 
> Thanks.
> 
> Here is the issue number in gitlab for more detail.
> https://gitlab.freedesktop.org/drm/intel/issues/318

Could you check whether it still happens with the latest upstream kernel, at 
least 5.4.y, if it wasn't tested yet?

I don't want to put a long delay just because of random reason unless it's 
really mandatory.  I'm wondering whether the recent write-sync change improves 
the situation, so let's check the recent code.


thanks,

Takashi

> 
> 
> 
> AJ Cheng
> NID/NID1
> e-mail: aj_ch...@compal.com
> Tel:  +886-2-8797-8599 ext. 17561
> Mobile : +886-932827829
> COMPAL Electronics, Inc.
> 
> [2 flash_once.diff ]
> 
> ___
> Alsa-devel mailing list
> alsa-de...@alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
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Re: [Intel-gfx] [alsa-devel] USB Type-C monitor flashes once when play a video file after unplug and re-plug the monitor

[Takashi Iwai]

On Fri, 03 Jan 2020 02:57:03 +0100,
 wrote:
> 
> Hi Sirs,
> Here is chromebook SW team from Compal.
> As the mail title, we hit issue that the external monitor will flash once 
> when play video after hot pluging.
> We can reproduce not only on chromebook but also ubuntu 16.04.
> There has higher failure rate with Dell Solomon dock and Dell S2718D monitor.
> 
> We found adding the delay in "sound/pci/hda/patch_hdmi.c " can fix this 
> issue.(as the attachment)
> May need your help to review and advice. Thanks.
> 
> Here is the issue number in gitlab for more detail.
> https://gitlab.freedesktop.org/drm/intel/issues/318

Could you check whether it still happens with the latest upstream
kernel, at least 5.4.y, if it wasn't tested yet?

I don't want to put a long delay just because of random reason unless
it's really mandatory.  I'm wondering whether the recent write-sync
change improves the situation, so let's check the recent code.


thanks,

Takashi

> 
> 
> 
> AJ Cheng
> NID/NID1
> e-mail: aj_ch...@compal.com
> Tel:  +886-2-8797-8599 ext. 17561
> Mobile : +886-932827829
> COMPAL Electronics, Inc.
> 
> [2 flash_once.diff ]
> 
> ___
> Alsa-devel mailing list
> alsa-de...@alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
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