Restart required for webcam to work; how to manually restart?

[Patricio]

http://ubuntuforums.org/showthread.php?p=7451356#post7451356 shows another user with the same problem.
I have a lapto HP pavillion
Linux patricio-laptop 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

From the kern.log:
/var/log/kern.log:Jun 13 15:20:31 patricio-laptop kernel: [29606.529587] uvcvideo 2-4:1.1: resume error -5
/var/log/kern.log:Jun 13 15:26:01 patricio-laptop kernel: [29937.049414] uvcvideo: Failed to query (135) UVC control 2 (unit 3) : -71 (exp. 2).
/var/log/kern.log:Jun 13 15:32:04 patricio-laptop kernel: [30300.054961] uvcvideo: Failed to query (135) UVC control 2 (unit 3) : -71 (exp. 2).

lsusb
Bus 002 Device 002: ID 04f2:b015 Chicony Electronics Co., Ltd VGA 24fps UVC Webcam

[Piotr (piotrsirko)]

Can confirm, with hp dv 2610us, get the same error after suspend or hibernate. Restart is needed in order to get the camera working again.

lsusb
Bus 001 Device 003: ID 04f2:b016 Chicony Electronics Co. , Ltd

With 9.04 64bit

[micromad (hplib-20-micromad)]

Hi,

did you try the following command ?

sudo modprobe uvcvideo

Seb

[Piotr (piotrsirko)]

Yes, tried it.

I also tried to remove it first with modprobe -r uvcvideo and then reload it but it didn't work.
After that it didn't even find the camera.

[MT (micdhack)]

When this occured to me i to tried to rmmod uvcvideo and modprobe uvcvideo but i got an error which said
FATAL error insterting uvcvideo (blabla): cannot allocate memory

Although i found a way to bypass this error. you have to logout which result to the restart of x and then when you login again by doing modprobe uvcvideo there is no error and camera works again

[Piotr (piotrsirko)]

That worked for me :)

[MT (micdhack)]

Since its been a while can anybody tell what happens during a logout so we can restart which services needed to be restarted so we can do it without logging out?

[Jeremy Foshee (jeremyfoshee)]

Hi Patricio,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 386799

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[bford16 (bford16)]

This bug should be reopened. I have a "Suyin HP Webcam" on my HP Pavilion dv7-1232NR with Ubuntu Lucid 2.6.32-23-generic (64 bit). The webcam works fine after a reboot, but suddenly stops responding. The modprobe commands actually make the problem worse; after sudo modprobe -r uvcvideo and sudo modprobe uvcvideo, Cheese Webcam Booth reports "no device found." But the camera is still connected:[code]Bus 001 Device 002: ID 064e:c107 Suyin Corp.[/code]

[Tobias Beck (vitrex)]

I have the same problem with Logitech, Inc. QuickCam Notebook Pro. Reloading the module doesn't help. I have to restart the system.

[Yuriy (ytkach)]

I have the same problem with HP Pavilion dv6000. The lsusb command doesn't show camera at first. I am able to run cheese, but after some time it freezes and then only reboot helps bringing camera back. The modprobe command doesn't help. I have all latest updates of the ubuntu 10.04. It used to work flawlessly in 9.04.

[Dragos Demir (demir)]

Same problem on ubuntu 10.10 on x64 AMD with a Logitech Quickcam: After boot camera works fine for a while (cheese, skype,) but than at some point there is no image (just black). Restart solves the problem. Lsusb shows the camera every time (Bus 001 Device 003: ID 046d:08ce Logitech, Inc. QuickCam Pro 5000)

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Pankaj Kumar (priyanshuz)]

Try putting this :

sudo rmmod uvcvideo
sudo modprobe uvcvideo

[Dragos Demir (demir)]

Thanks for the tips!

I gave up a while ago, got a new camera fully supported and I did not had any problems since.

It was still a Logitec model, ( C200 if I am not wrong, I can't remember now and I am not in front of it now)

I put the one with problems on a Windows PC where it is performing well.

Hopefully others will benefit of your advice.

Cheers!

Dragos Demir

(Sent from my BlackBerry)

-----Original Message-----
From: Pankaj Kumar <email address hidden>
Date: Fri, 9 Sep 2011 15:04:22
To: <email address hidden>
Subject: [Bug 386799] Re: Restart required for webcam to work; how to
 manually restart?

Try putting this :

 sudo rmmod uvcvideo
 sudo modprobe uvcvideo

 --
 You received this bug notification because you are subscribed to the bug
 report.
 https://bugs.launchpad.net/bugs/386799

 Title:
   Restart required for webcam to work; how to manually restart?

 Status in "linux" package in Ubuntu:
   Won't Fix

 Bug description:
   http://ubuntuforums.org/showthread.php?p=7451356#post7451356  shows another user with the same problem.
   I have a lapto HP pavillion
   Linux patricio-laptop 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

   From the kern.log:
   /var/log/kern.log:Jun 13 15:20:31 patricio-laptop kernel: [29606.529587] uvcvideo 2-4:1.1: resume error -5
   /var/log/kern.log:Jun 13 15:26:01 patricio-laptop kernel: [29937.049414] uvcvideo: Failed to query (135) UVC control 2 (unit 3) : -71 (exp. 2).
   /var/log/kern.log:Jun 13 15:32:04 patricio-laptop kernel: [30300.054961] uvcvideo: Failed to query (135) UVC control 2 (unit 3) : -71 (exp. 2).

   lsusb
   Bus 002 Device 002: ID 04f2:b015 Chicony Electronics Co., Ltd VGA 24fps UVC Webcam

 To manage notifications about this bug go to:
 https://bugs.launchpad.net/ubuntu/&#43;source/linux/&#43;bug/386799/&#43;subscriptions

[Prabhjot (prabhjotsbhatia)]

Confirming problem still exists in Ubuntu 11.10, using Inspiron 1525

[kanito8a (kanito8a-gmail)]

I have the same problem. Ubuntu 12.04.

[Davide (omonimus1)]

After years and years of bug flagging from other users,
Same Problem on 18.04.4 LTS, bionic.
Laptop: TECLAST F7.

[Hadi Elnemr (hadi-elnemr)]

The bug is still there with the built-in camera on Ubuntu 20.04 LTS on Lenovo E570 Laptop.

[glauber_md (glauber-md)]

The bug seems to be unbeatable. Still happening on Ubuntu 22.04 LTS on a Samsung NP550XDAE laptop. I'm using an integrated camera:

$ lsmod | grep uvcvideo
uvcvideo 106496 2
videobuf2_vmalloc 20480 1 uvcvideo
videobuf2_v4l2 32768 1 uvcvideo
videobuf2_common 77824 4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
videodev 258048 5 videobuf2_v4l2,uvcvideo,videobuf2_common
mc 65536 4 videodev,videobuf2_v4l2,uvcvideo,videobuf2_common

$ lsusb |grep -i camera
Bus 003 Device 003: ID 05c8:023a Cheng Uei Precision Industry Co., Ltd (Foxlink) VGA Camera