hello,
i get this output piece from "dmesg -l err" of kernel 5.4.2
-------------------x---------------------------x------------------
uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1).
uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1).
-------------------x----------------------------x-----------------
Additional information:
Linux debian 5.4.2 #17 SMP Sat Dec 7 01:39:12 IST 2019 x86_64 GNU/Linux
Relevant file:
drivers/media/usb/uvc/uvc_video.c
--
software engineer
rajagiri school of engineering and technology
Hello Jeffrin,
On Sat, Dec 07, 2019 at 11:51:52PM +0530, Jeffrin Jose wrote:
> hello,
>
> i get this output piece from "dmesg -l err" of kernel 5.4.2
>
>
> -------------------x---------------------------x------------------
> uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1).
> uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1).
> -------------------x----------------------------x-----------------
>
> Additional information:
> Linux debian 5.4.2 #17 SMP Sat Dec 7 01:39:12 IST 2019 x86_64 GNU/Linux
>
> Relevant file:
> drivers/media/usb/uvc/uvc_video.c
Does the camera otherwise fail to operate correctly ? Was the problem
present in older kernel versions, or did it appear with v5.4.2 ? Are the
above messages output every time you plug the camera (or load the driver
in case the camera is built in), or only randomly ? What is the exact
camera model, and could you please send me the lsusb -v output for it
(running as root if possible) ?
--
Regards,
Laurent Pinchart
On Mon, Dec 09, 2019 at 03:18:04AM +0200, Laurent Pinchart wrote:
> Hello Jeffrin,
>
> On Sat, Dec 07, 2019 at 11:51:52PM +0530, Jeffrin Jose wrote:
> > hello,
> >
> > i get this output piece from "dmesg -l err" of kernel 5.4.2
> >
> >
> > -------------------x---------------------------x------------------
> > uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1).
> > uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1).
> > -------------------x----------------------------x-----------------
> >
> > Additional information:
> > Linux debian 5.4.2 #17 SMP Sat Dec 7 01:39:12 IST 2019 x86_64 GNU/Linux
> >
> > Relevant file:
> > drivers/media/usb/uvc/uvc_video.c
>
> Does the camera otherwise fail to operate correctly ? Was the problem
> present in older kernel versions, or did it appear with v5.4.2 ? Are the
> above messages output every time you plug the camera (or load the driver
> in case the camera is built in), or only randomly ? What is the exact
> camera model, and could you please send me the lsusb -v output for it
> (running as root if possible) ?
>
i think the camera normally work properly.iam sending this mail
because i was looking for error or errors in kernel. i think it started
appearning in the Linux kernel 5.4.2 for me.this is a built in webcam for
my laptop(ASUS VivoBook). i think this may randomly(not sure) appear.
output files attached
--------------x-------------
$sudo lsusb -v > lsusb.txt
$sudo lsusb -v 2> lsusb-error.txt
-----------x---------------------
some related things...
------------x-----------------x-----------------x--------------
root>cat stats
frames: 2098
packets: 2105431
empty: 1674589
errors: 0
invalid: 0
pts: 1 early, 2097 initial, 2098 ok
scr: 2098 count ok, 2098 diff ok
sof: 0 <= sof <= 2047, freq 1.000 kHz
root>pwd
/sys/kernel/debug/usb/uvcvideo/1-2-1
root>
$sudo dmesg | grep uvc
[sudo] password for jeffrin:
[ 46.558999] uvcvideo: Found UVC 1.00 device USB2.0 VGA UVC WebCam (13d3:5a11)
[ 46.559307] uvcvideo: Failed to query (GET_INFO) UVC control 6 on unit 1: -32 (exp. 1).
[ 46.560068] uvcvideo: Failed to query (GET_INFO) UVC control 7 on unit 1: -32 (exp. 1).
[ 46.563584] uvcvideo 1-6:1.0: Entity type for entity Extension 4 was not initialized!
[ 46.563648] uvcvideo 1-6:1.0: Entity type for entity Processing 2 was not initialized!
[ 46.563660] uvcvideo 1-6:1.0: Entity type for entity Camera 1 was not initialized!
[ 46.565127] usbcore: registered new interface driver uvcvideo
$
------------------x-----------------x-------------------x--------
--
software engineer
rajagiri school of engineering and technology