HVR 900 (USB ID 2040:6500) no analogue sound reloaded

HVR 900 (USB ID 2040:6500) no analogue sound reloaded

[Oravecz Csaba]

I reported this issue earlier but for some reason it went pretty much
unnoticed. The essence is that with the newest em28xx drivers now present in
3.14 kernels (i'm on stock fedora 3.14.15-100.fc19.i686.PAE) I can't get
analogue sound from this card.

I see that the code snippet that produced this output in the pre 3.14 versions

em2882/3 #0: Config register raw data: 0x50
em2882/3 #0: AC97 vendor ID = 0xffffffff
em2882/3 #0: AC97 features = 0x6a90
em2882/3 #0: Empia 202 AC97 audio processor detected

is still there in em28xx-core.c, however, there is nothing like that in
current kernel logs so it seems that this part of the code is just skipped,
which I tend to think is not the intended behaviour. I have not gone any
further to investigate the issue, rather I've simply copied the 'old' em28xx
directory over the current one in the latest source and compiled the drivers
in this way and so got back the old em28xx version, which is working well in
the current kernel as well.

I don't consider this an optimal solution so 
I would very much appreciate any help in this issue.

best,
o.cs.

Re: HVR 900 (USB ID 2040:6500) no analogue sound reloaded

[Frank Schäfer]

Am 22.08.2014 um 21:03 schrieb Oravecz Csaba:
> I reported this issue earlier but for some reason it went pretty much
> unnoticed. The essence is that with the newest em28xx drivers now present in
> 3.14 kernels (i'm on stock fedora 3.14.15-100.fc19.i686.PAE) I can't get
> analogue sound from this card.
>
> I see that the code snippet that produced this output in the pre 3.14 versions
>
> em2882/3 #0: Config register raw data: 0x50
> em2882/3 #0: AC97 vendor ID = 0xffffffff
> em2882/3 #0: AC97 features = 0x6a90
> em2882/3 #0: Empia 202 AC97 audio processor detected
>
> is still there in em28xx-core.c, however, there is nothing like that in
> current kernel logs so it seems that this part of the code is just skipped,
> which I tend to think is not the intended behaviour. I have not gone any
> further to investigate the issue, rather I've simply copied the 'old' em28xx
> directory over the current one in the latest source and compiled the drivers
> in this way and so got back the old em28xx version, which is working well in
> the current kernel as well.
>
> I don't consider this an optimal solution so 
> I would very much appreciate any help in this issue.
>
> best,
> o.cs.

Thank you for reporting this issue.
I suspect reverting commit b99f0aadd3 "[media] em28xx: check if a device
has audio earlier" will resolve it.
Can you check that ?

Regards,
Frank

Re: HVR 900 (USB ID 2040:6500) no analogue sound reloaded

[Oravecz Csaba]

Sun Aug 31 17:07:00 2014 =?windows-1252?Q?Frank_Sch=E4fer?= kirjutas:
> 
> 
> Am 22.08.2014 um 21:03 schrieb Oravecz Csaba:
> > I reported this issue earlier but for some reason it went pretty much
> > unnoticed. The essence is that with the newest em28xx drivers now present in
> > 3.14 kernels (i'm on stock fedora 3.14.15-100.fc19.i686.PAE) I can't get
> > analogue sound from this card.
> >
> > I see that the code snippet that produced this output in the pre 3.14 versions
> >
> > em2882/3 #0: Config register raw data: 0x50
> > em2882/3 #0: AC97 vendor ID = 0xffffffff
> > em2882/3 #0: AC97 features = 0x6a90
> > em2882/3 #0: Empia 202 AC97 audio processor detected
> >
> > is still there in em28xx-core.c, however, there is nothing like that in
> > current kernel logs so it seems that this part of the code is just skipped,
> > which I tend to think is not the intended behaviour. I have not gone any
> > further to investigate the issue, rather I've simply copied the 'old' em28xx
> 
> Thank you for reporting this issue.
> I suspect reverting commit b99f0aadd3 "[media] em28xx: check if a device
> has audio earlier" will resolve it.
> Can you check that ?

Yes, that has indeed solved the problem. I assume this will slowly propagate
into the mainstraim distros, in the meantime i can happily use the custom
compiled reverted drivers.
Thanks,
o.cs.

Re: HVR 900 (USB ID 2040:6500) no analogue sound reloaded

[Frank Schäfer]

Am 01.09.2014 um 09:31 schrieb Oravecz Csaba:
> Sun Aug 31 17:07:00 2014 =?windows-1252?Q?Frank_Sch=E4fer?= kirjutas:
>>
>> Am 22.08.2014 um 21:03 schrieb Oravecz Csaba:
>>> I reported this issue earlier but for some reason it went pretty much
>>> unnoticed. The essence is that with the newest em28xx drivers now present in
>>> 3.14 kernels (i'm on stock fedora 3.14.15-100.fc19.i686.PAE) I can't get
>>> analogue sound from this card.
>>>
>>> I see that the code snippet that produced this output in the pre 3.14 versions
>>>
>>> em2882/3 #0: Config register raw data: 0x50
>>> em2882/3 #0: AC97 vendor ID = 0xffffffff
>>> em2882/3 #0: AC97 features = 0x6a90
>>> em2882/3 #0: Empia 202 AC97 audio processor detected
>>>
>>> is still there in em28xx-core.c, however, there is nothing like that in
>>> current kernel logs so it seems that this part of the code is just skipped,
>>> which I tend to think is not the intended behaviour. I have not gone any
>>> further to investigate the issue, rather I've simply copied the 'old' em28xx
>> Thank you for reporting this issue.
>> I suspect reverting commit b99f0aadd3 "[media] em28xx: check if a device
>> has audio earlier" will resolve it.
>> Can you check that ?
> Yes, that has indeed solved the problem. I assume this will slowly propagate
> into the mainstraim distros, in the meantime i can happily use the custom
> compiled reverted drivers.
> Thanks,
> o.cs.
Ok, thanks for testing.
I will send a patch reverting this commit later this evening.

Regards,
Frank