Re: TRX40 Realtek ALC1220-VB USB Audio

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Le mardi 7 avril 2020, 17:42:29 CEST Takashi Iwai a écrit :
> On Sun, 29 Mar 2020 16:20:49 +0200,
> 
> laurent Trinques wrote:
> > Le dimanche 29 mars 2020, 10:50:53 CEST Takashi Iwai a écrit :
> > > On Sat, 07 Mar 2020 14:00:26 +0100,
> > > 
> > > laurent Trinques wrote:
> > > > Hello,
> > > > 
> > > > sudo dmesg -lerr -lcrit
> > > > 
> > > > [    0.386478] ACPI BIOS Error (bug): Failure creating named object
> > > > [\_SB.I2CA.WT1A], AE_ALREADY_EXISTS (20191018/dswload2-323)
> > > 
> > > (snip)
> > > 
> > > > [    2.545332] Error: Driver 'pcspkr' is already registered,
> > > > aborting...
> > > 
> > > All those are irrelevant with the sound problem.
> > > 
> > > > [    2.572542] snd_hda_intel 0000:23:00.4: no codecs found!
> > > 
> > > I guess this is a known "problem", the strange hardware implementation
> > > where exposing the dummy HD-audio bus with non-existing codec.  So
> > > this can be ignored as well (maybe we can blacklist the PCI ID for
> > > ignoring more properly).
> > > 
> > > The real issue is:
> > > > [    8.169209] usb 7-5: cannot get ctl value: req = 0x83, wValue =
> > > > 0xc00,
> > > > wIndex = 0x1300, type = 4
> > > > [    8.169214] usb 7-5: 19:0: cannot get min/max values for control 12
> > > > (id
> > > > 19)
> > > 
> > > So it's likely a USB audio firmware that doesn't behave correctly as
> > > advertised, and we'd need a workaround.
> > > 
> > > Could you give lsusb -v output for this device?
> > 
> > Yes
> > Bus 007 Device 002: ID 0db0:543d Micro Star International USB Audio
> > 
> > See attached output.
> 
> Thanks.  This looks like the same issue as reported by others.
>   https://bugzilla.kernel.org/show_bug.cgi?id=206543
> 
> Could you try two patches found in the bugzilla above?
> 
> 
> thanks,
> 
> Takashi

Seems fixed.
Thanks Takashi for this quick patches and make warnings silent. ;-)

Cheers,
Laurent








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