On Tue, 07 Jan 2020 18:24:57 +0100,
Nathan Ciobanu wrote:
>
> On Mon, Jan 06, 2020 at 08:08:04AM +0000, [email protected] 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 <[email protected]>
> > Sent: Friday, January 3, 2020 5:16 PM
> > To: Cheng. AJ (TPE) <[email protected]>
> > Cc: [email protected]; [email protected];
> > [email protected]; Wang. CindyXT (TPE)
> > <[email protected]>; Ye. Nelson (TPE) <[email protected]>; Yap.
> > Shane (TPE) <[email protected]>; Kao. Lucien (TPE)
> > <[email protected]>; Tseng. Evan (TPE) <[email protected]>
> > 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,
> > <[email protected]> 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: [email protected]<mailto:[email protected]>
> > > Tel: +886-2-8797-8599 ext. 17561
> > > Mobile : +886-932827829
> > > COMPAL Electronics, Inc.
> > >
> > > [2 flash_once.diff <application/octet-stream (base64)>]
> > >
> > > _______________________________________________
> > > Alsa-devel mailing list
> > > [email protected]
> > > https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>
>
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