This is with vanilla kernel 2.6.25-rc1.
Regards
Sid.
Laurent Pinchart wrote:
> On Tuesday 12 February 2008, Sid Boyce wrote:
>> Laurent Pinchart wrote:
>>> On Saturday 09 February 2008, Sid Boyce wrote:
>>>> With svn at revision 177, I can now get a picture when I do the skype
>>>> camera test, but it freezes after a few frames. Camera is built-in on
>>>> Acer Travelmate 7520 laptop.
>>> Any suspicious message in the kernel log ?
>>>
>>> Best regards,
>>>
>>> Laurent Pinchart
>> I posted more dmesg info just a while ago. Also another post about build
>> errors on revision 179.
>>
>> [10936.211150] compat_ioctl32: v4l2 ioctl VIDIOC_S_PARM, dir=rw
>> (0xc0cc5616) [10936.211166] ioctl32(skype:28263): Unknown cmd fd(28)
>> cmd(c0cc5616){t:'V';sz:204} arg(f6162e40) on /dev/video0
>> [10943.613436] compat_ioctl32: v4l2 ioctl VIDIOC_S_PARM, dir=rw
>> (0xc0cc5616) [10943.613436] ioctl32(skype:28263): Unknown cmd fd(28)
>> cmd(c0cc5616){t:'V';sz:204} arg(f6162e30) on /dev/video0
>> [10943.620761] compat_ioctl32: v4l2 ioctl VIDIOC_S_PARM, dir=rw
>> (0xc0cc5616) [10943.620769] ioctl32(skype:28263): Unknown cmd fd(28)
>> cmd(c0cc5616){t:'V';sz:204} arg(f6162e00) on /dev/video0
>
> Funny, if you look at the timestamps, your computer jumps back in time at this
> point. Are you experimenting with time travel ? :-)
>
>> [10942.250515] PGD 8063 PUD 0
>> [10942.250523] CPA ffff810080000000 no pte level 0
>> [10942.367316] PGD 8063 PUD 0
>> [10942.367324] CPA ffff810080000000 no pte level 0
>> [10942.415711] PGD 8063 PUD 0
>> [10942.415720] CPA ffff810080000000 no pte level 0
>
> I don't know where those messages come from, I'll just assume they don't hurt
> (they look related to memory management).
>
>> [10962.712515] uvcvideo: Failed to resubmit video URB (-45).
>> [10962.712515] uvcvideo: Failed to resubmit video URB (-45).
>> [10962.712515] uvcvideo: Failed to resubmit video URB (-45).
>> [10962.712515] uvcvideo: Failed to resubmit video URB (-45).
>> [10962.712515] uvcvideo: Failed to resubmit video URB (-45).
>
> Basically, the EHCI scheduler says that the time slot that the URBs should be
> queued for has already elapsed. This is a valid error when a device driver
> specifies a time slot, but not when asking the EHCI scheduler to queue URBs
> ASAP. I believe this is a bug in the EHCI scheduler. Could you try to push
> the issue on the linux-usb-devel mailing list ?
>
> Best regards,
>
> Laurent Pinchart
>
>
--
Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
Specialist, Cricket Coach
Microsoft Windows Free Zone - Linux used for all Computing Tasks
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