Bug#851404: Internal speakers don't work after standby on a Toshiba z20t-c-121

[Salvatore Bonaccorso <carnil@debian.org>]

Hi Michael,

On Thu, Jul 03, 2025 at 12:50:07PM +0200, Uwe Kleine-König wrote:
> Hello Michael,
> 
> On Thu, Jul 03, 2025 at 12:40:07PM +0200, Michael Fritscher wrote:
> > Am 03.07.25 um 07:49 schrieb Uwe Kleine-König:
> > > I guess someone with Windows driver debugging skills could work out the
> > > relevant difference between the driver versions 8.66.47.50 and
> > > 8.66.47.56. Maybe there is also a changelog that could give an
> > > indication?! Maybe it also helps to bring this to the attention of the
> > > hda-intel maintainers, though there doesn't seem to be a dedicated
> > > maintainer for that driver.
> > 
> > I just analyzed them a bit ( https://support.dynabook.com/support/modelHome?freeText=1200013722&osId=3333785).
> > They are self extracting zip files.
> > 
> > The main difference in the inf file is the addition of
> > HKR,Settings\OEM,ResumeDelayPeriodInMs,1,40,00,00,00
> > 
> > And they disabled
> > HKR,"EP\\0",%PKEY_SRS30_XmlLocation%,,%11%\SRSLabs\slconfig.xml
> > in some locations. This file is in the exe (which is a self extracting zip
> > after all), and seems about "SRS Premium Sound 2". Seems to be
> > gain-/equalizer related settings. This xml file itself is unchanged between
> > the versions.
> > 
> > There are 2 new files:
> > 
> > 1. "DisablePuma.ini":
> > HKLM,"SOFTWARE\Microsoft\Windows\CurrentVersion\AUDIO",DisableProtectedAudioDG,0x10001,0x00000001
> > 2. tossaemaxapo32.dll. (Description: "TOSHIBA Speaker Audio Enhancement
> > Maximizer"
> > 
> > The only other changed files are
> > tosasfapo32.dll (way smaller, 880 kB ->790 KB, Description: "Toshiba Audio
> > Source Filtering APO)"
> > 
> > and SAII.cab (the same size, the content being almost the same. Only
> > difference: The version number in SA2VER.INI)
> > 
> > 
> > The main driver, *.sys, are indeed the same.
> 
> To (maybe?) state the obvious: It would be great to find out which of
> the pointed out differences is the relevant that breaks the driver. I
> bet it's not SAII.cab :-)

Any news here on the question from Uwe? Oherwise I suggest that we
finally close it as beeing unactionable on our end. We cannot keep
bugs open idefintively for years.

Regards,
Salvatore