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christopher72

Member

Registered: 2010-09-07

Posts: 24

[SOLVED] after udev upgrade, hp built-in camera stops working

After the latest upgrade of udev, my built-in camera stopped working. 
udev-177-3-x86_64.pkg.tar.xz
downgrading to:
udev-175-1-x86_64.pkg.tar.xz  solves the problem.

The device (output from lsusb -v):
Bus 001 Device 004: ID 064e:d281 Suyin Corp.
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          239 Miscellaneous Device
  bDeviceSubClass         2 ?
  bDeviceProtocol         1 Interface Association
  bMaxPacketSize0        64
  idVendor           0x064e Suyin Corp.
  idProduct          0xd281
  bcdDevice            1.10
  iManufacturer           1 SuYin

  iProduct                2 HP TrueVision HD
  iSerial                 3 HF1016-A821-OV011-VH-R01.01.00
  bNumConfigurations      1

Linux dv6 3.2.1-1-ARCH #1 SMP PREEMPT Fri Jan 13 06:50:31 CET 2012 x86_64 Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz GenuineIntel GNU/Linux
Laptop: HP Pavilion dv6-6b41ed

Not sure if this is the right place for this bug, any advice as to where to put this (upstream?) is welcome.

Last edited by christopher72 (2012-01-23 11:32:18)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,701

Re: [SOLVED] after udev upgrade, hp built-in camera stops working

My system:

Bus 002 Device 002: ID 064e:c107 Suyin Corp. HP webcam [dv6-1190en]

ewaller@odin:~[1] 1008 %uname -a
Linux odin 3.2.1-1-ARCH #1 SMP PREEMPT Fri Jan 13 06:50:31 CET 2012 x86_64 Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz GenuineIntel GNU/Linux
ewaller@odin:~ 1009 %

ewaller@odin:~[1] 1010 %pacman -Qs udev
local/android-udev 0.8-2
    Udev rules to connect Android devices to your linux box
local/udev 177-3 (base)
    The userspace dev tools (udev)
ewaller@odin:~ 1011 %

Works dandy on my DV4.  I note that my camera and your camera do have different product IDs (Though the vendor IDs do match)
Can you verify that the uvcvideo  kernel module is loaded?

Last edited by ewaller (2012-01-22 18:43:10)

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christopher72

Member

Registered: 2010-09-07

Posts: 24

Re: [SOLVED] after udev upgrade, hp built-in camera stops working

Yes, uvcvideo is loaded:

[chris@dv6 ~]$ lsmod | grep video
uvcvideo               64311  0 
videodev               82069  1 uvcvideo
media                  10597  2 videodev,uvcvideo
v4l2_compat_ioctl32     8316  1 videodev
i2c_core               20492  7 i2c_algo_bit,drm,drm_kms_helper,i2c_i801,i915,videodev,radeon
video                  11164  1 i915
usbcore               146241  5 ehci_hcd,xhci_hcd,btusb,uvcvideo

Something strange is going on though, when doing a

udevadm info -q all -n /dev/video0

I get a difference with both versions of UDEV in this line;
with latest udev:

E: DEVNAME=video0

with previous udev:

E: DEVNAME=/dev/video0

Not sure if this means anything, but it's the only difference I could find.

falconindy

Developer

From: New York, USA

Registered: 2009-10-22

Posts: 4,111

Website

Re: [SOLVED] after udev upgrade, hp built-in camera stops working

with latest udev:

E: DEVNAME=video0

with previous udev:

E: DEVNAME=/dev/video0

Not sure if this means anything, but it's the only difference I could find.

This is fixed in udev 178:

http://git.kernel.org/?p=linux/hotplug/ … 42a2532c39

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christopher72

Member

Registered: 2010-09-07

Posts: 24

Re: [SOLVED] after udev upgrade, hp built-in camera stops working

Allright, thanks! I'll wait for the new one and keep the old version 'till then.

falconindy

Developer

From: New York, USA

Registered: 2009-10-22

Posts: 4,111

Website

Re: [SOLVED] after udev upgrade, hp built-in camera stops working

Too late. udev 178 is already in core. Regen your initramfs and reboot.

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