2019-08-16 03:11:15

by Randy Dunlap

[permalink] [raw]
Subject: Re: Linux Kernel 5.2.8 (uvc or i915? <<<)

[adding mailing lists etc. with Nathaniel's test info]


On 8/15/19 7:21 PM, Nathaniel Russell wrote:
> Well i surpressed the uvcvideo driver and you are right Randy it
> definitely is not the uvcvideo driver. There is something going on in
> the i915 driver.
>
>
> On 8/15/19, Randy Dunlap <[email protected]> wrote:
>> On 8/15/19 6:15 PM, Nathaniel Russell wrote:
>>> I would really like help with the kernel error with my uvcvideo driver.
>>>
>>
>> Hi again.
>>
>> What makes you think that the problem is related to the uvcvideo driver?
>> Does some previous kernel version work correctly? If so, what version(s)?
>>
>>
>> Does this warning message only happen when the uvcvideo driver is being
>> loaded?
>> Can you suppress loading of the uvcvideo driver to find out?
>>
>> Most of the problems/errors/warnings that I see are related to the i915
>> driver:
>>
>> [ 13.032341] timed out waiting for port C ready: got 0x20, expected 0xe0
>> [ 13.032872] WARNING: CPU: 1 PID: 239 at
>> drivers/gpu/drm/i915/intel_display.c:1597 vlv_wait_port_ready+0x99/0xe0
>> [i915]
>> [ 13.033632] RIP: 0010:vlv_wait_port_ready+0x99/0xe0 [i915]
>>
>> although there are a few uvcvideo warnings:
>> [ 13.039305] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was not
>> initialized!
>> [ 13.039318] uvcvideo 1-5:1.0: Entity type for entity Extension 3 was not
>> initialized!
>> [ 13.039330] uvcvideo 1-5:1.0: Entity type for entity Processing 2 was not
>> initialized!
>> [ 13.039339] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was not
>> initialized!
>>
>>
>> Laurent, do you see any uvc issues here? Any ideas/suggestions?
>>
>>
>> @intel-gfx: any ideas about what is going on here with the i915 driver?
>>
>>
>>
>> Original message to lkml:
>> https://lore.kernel.org/lkml/CAONH+Jm-O6=DQ+K2n5pNTNMg2Sq1KcVNFLuweVh6W82OPEFJoQ@mail.gmail.com/T/#u
>>
>> Previous message for 5.1.21 kernel:
>> https://lore.kernel.org/lkml/CAONH+JkTFujY9vEyNNuem+9rJ2qBKkf-PbKk9=DBSVEp6kW=yw@mail.gmail.com/
>>
>>
>> thanks.
>> --
>> ~Randy
>>


--
~Randy


2019-08-16 09:59:51

by Laurent Pinchart

[permalink] [raw]
Subject: Re: Linux Kernel 5.2.8 (uvc or i915? <<<)

Hi Randy,

On Thu, Aug 15, 2019 at 08:10:03PM -0700, Randy Dunlap wrote:
> [adding mailing lists etc. with Nathaniel's test info]
>
> On 8/15/19 7:21 PM, Nathaniel Russell wrote:
> > Well i surpressed the uvcvideo driver and you are right Randy it
> > definitely is not the uvcvideo driver. There is something going on in
> > the i915 driver.
> >
> > On 8/15/19, Randy Dunlap <[email protected]> wrote:
> >> On 8/15/19 6:15 PM, Nathaniel Russell wrote:
> >>> I would really like help with the kernel error with my uvcvideo driver.
> >>
> >> Hi again.
> >>
> >> What makes you think that the problem is related to the uvcvideo driver?
> >> Does some previous kernel version work correctly? If so, what version(s)?
> >>
> >>
> >> Does this warning message only happen when the uvcvideo driver is being
> >> loaded?
> >> Can you suppress loading of the uvcvideo driver to find out?
> >>
> >> Most of the problems/errors/warnings that I see are related to the i915
> >> driver:
> >>
> >> [ 13.032341] timed out waiting for port C ready: got 0x20, expected 0xe0
> >> [ 13.032872] WARNING: CPU: 1 PID: 239 at
> >> drivers/gpu/drm/i915/intel_display.c:1597 vlv_wait_port_ready+0x99/0xe0
> >> [i915]
> >> [ 13.033632] RIP: 0010:vlv_wait_port_ready+0x99/0xe0 [i915]
> >>
> >> although there are a few uvcvideo warnings:
> >> [ 13.039305] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was not
> >> initialized!
> >> [ 13.039318] uvcvideo 1-5:1.0: Entity type for entity Extension 3 was not
> >> initialized!
> >> [ 13.039330] uvcvideo 1-5:1.0: Entity type for entity Processing 2 was not
> >> initialized!
> >> [ 13.039339] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was not
> >> initialized!
> >>
> >> Laurent, do you see any uvc issues here? Any ideas/suggestions?

No, uvcvideo seems completely reunlated.

> >> @intel-gfx: any ideas about what is going on here with the i915 driver?
> >>
> >> Original message to lkml:
> >> https://lore.kernel.org/lkml/CAONH+Jm-O6=DQ+K2n5pNTNMg2Sq1KcVNFLuweVh6W82OPEFJoQ@mail.gmail.com/T/#u
> >>
> >> Previous message for 5.1.21 kernel:
> >> https://lore.kernel.org/lkml/CAONH+JkTFujY9vEyNNuem+9rJ2qBKkf-PbKk9=DBSVEp6kW=yw@mail.gmail.com/

--
Regards,

Laurent Pinchart

2019-08-16 21:37:13

by Nathaniel Russell

[permalink] [raw]
Subject: Re: Linux Kernel 5.2.8 (uvc or i915? <<<)

Kernel is the dmesg from the kernel I run on a daily basis.

On 8/16/19, Laurent Pinchart <[email protected]> wrote:
> Hi Randy,
>
> On Thu, Aug 15, 2019 at 08:10:03PM -0700, Randy Dunlap wrote:
>> [adding mailing lists etc. with Nathaniel's test info]
>>
>> On 8/15/19 7:21 PM, Nathaniel Russell wrote:
>> > Well i surpressed the uvcvideo driver and you are right Randy it
>> > definitely is not the uvcvideo driver. There is something going on in
>> > the i915 driver.
>> >
>> > On 8/15/19, Randy Dunlap <[email protected]> wrote:
>> >> On 8/15/19 6:15 PM, Nathaniel Russell wrote:
>> >>> I would really like help with the kernel error with my uvcvideo
>> >>> driver.
>> >>
>> >> Hi again.
>> >>
>> >> What makes you think that the problem is related to the uvcvideo
>> >> driver?
>> >> Does some previous kernel version work correctly? If so, what
>> >> version(s)?
>> >>
>> >>
>> >> Does this warning message only happen when the uvcvideo driver is
>> >> being
>> >> loaded?
>> >> Can you suppress loading of the uvcvideo driver to find out?
>> >>
>> >> Most of the problems/errors/warnings that I see are related to the
>> >> i915
>> >> driver:
>> >>
>> >> [ 13.032341] timed out waiting for port C ready: got 0x20, expected
>> >> 0xe0
>> >> [ 13.032872] WARNING: CPU: 1 PID: 239 at
>> >> drivers/gpu/drm/i915/intel_display.c:1597
>> >> vlv_wait_port_ready+0x99/0xe0
>> >> [i915]
>> >> [ 13.033632] RIP: 0010:vlv_wait_port_ready+0x99/0xe0 [i915]
>> >>
>> >> although there are a few uvcvideo warnings:
>> >> [ 13.039305] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was
>> >> not
>> >> initialized!
>> >> [ 13.039318] uvcvideo 1-5:1.0: Entity type for entity Extension 3 was
>> >> not
>> >> initialized!
>> >> [ 13.039330] uvcvideo 1-5:1.0: Entity type for entity Processing 2
>> >> was not
>> >> initialized!
>> >> [ 13.039339] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was
>> >> not
>> >> initialized!
>> >>
>> >> Laurent, do you see any uvc issues here? Any ideas/suggestions?
>
> No, uvcvideo seems completely reunlated.
>
>> >> @intel-gfx: any ideas about what is going on here with the i915
>> >> driver?
>> >>
>> >> Original message to lkml:
>> >> https://lore.kernel.org/lkml/CAONH+Jm-O6=DQ+K2n5pNTNMg2Sq1KcVNFLuweVh6W82OPEFJoQ@mail.gmail.com/T/#u
>> >>
>> >> Previous message for 5.1.21 kernel:
>> >> https://lore.kernel.org/lkml/CAONH+JkTFujY9vEyNNuem+9rJ2qBKkf-PbKk9=DBSVEp6kW=yw@mail.gmail.com/
>
> --
> Regards,
>
> Laurent Pinchart
>


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