Hello,
I'm currently on 2.6.30 and the problem is still here.
However I've tried on a brand new (Sony Vaio) laptop and the webcam is
working fine (kernel 2.6.26 with the Debian live Lenny).
So it seems that you were right and that it has something to do with my
computer... :-(
Strangely I was exp
Hello,
Sorry for the misunderstanding (maybe my english could be better):
I've tried on another port and another computer and I had exactly the
same problem.
I will try on a third computer this evening, but if the problem is
still the same, surely the problem couldn't be on the USB controller
(oth
Hi,
Based on the link you provided (
http://forums.quickcamteam.net/showthread.php?tid=860), There are obviously
a lot of frame drops (USB isochronous frame lost (-71).) "-71" means
-EPROTO, which will be dropped by the driver:
:
for (i = 0; i < urb->number_of_packets; ++i) {
if (
Hello,
I've tried on a completely different computer (mine is an old Dell
GX150 workstation with a PCI USB 2.0 controller, the other is a new Acer
laptop) and I have exactly the same problem (with kernel 2.6.26).
However this time I could try on Windows Vista (which was on the laptop)
and the we
Hello,
1) I will try this WE on a different computer which has USB 2.0 port
directly on motherboard and keep you update
2) I've included all trace here :
http://forums.quickcamteam.net/showthread.php?tid=860
3) I have the problem with guvcview, luvcview, mplayer, kopete,
skype... So I don't think
Hello,
Do you have the Quickcam Pro 9000 or the Vision Pro ?
I didn't have any difficulty turning off the auto-exposure with both of them.
Have you tried with normal user and root ?
Anyway my problem was not so with the framerate (which may be
dependant of the exposure) but on dropped frames (whic
Hi,
2009/6/25 Andrey Nechypurenko
>
> Hi,
>
> > 1) dropping by the device because the host is too slow to drain the data,
> -> use a different host to test
>
> I also have this camera and on my Dell Precission M6400 notebook running
> latest stable Debian (lenny) luvcview shows no more then 10-1
Hi,
> 1) dropping by the device because the host is too slow to drain the data, ->
> use a different host to test
I also have this camera and on my Dell Precission M6400 notebook running latest
stable Debian (lenny) luvcview shows no more then 10-12 fps so far.
I did try it only in room with "
Hi
Maybe there are some possible reasons..
1) dropping by the device because the host is too slow to drain the data, ->
use a different host to test
2) dropping by the host uvc driver, -> turn on the trace to maximum to check
if there is a drop
3) dropping by the application above uvc driver, -> pr
I've tried disconnecting all PCI cards except the USB controler and
using it in different slot, but same results.
I also tried booting with acpi=off but no such luck.
I will try on another computer this week end. Really strange... I never
had any problem with this USB controler.
I also have a Phi
The YUYV fps difference to MJPG, IMHO, can only be caused by the frame size.
MJPG is compressed so it can be some 10 times smaller compared to YUYV.
This also indicates that CPU is not a problem since MJPG requires a lot more
CPU (needs decompressing)
So if memory is also not a problem, the only th
No problem here also.
There is always a big bunch of free memory...
Keep asking ! Sooner or later, we'll find the culprit !! ;-)
Thanks
On Wed, 24 Jun 2009 22:43:02 +0100, Paulo Assis
wrote :
> You should also check memory usage, make sure your system is not
> using swap.
>
>
> 2009/6/24 Pau
On Wed, 24 Jun 2009 22:38:59 +0100, Paulo Assis
wrote :
> >
> > Using YUYV, I only got 5 FPS (compared to 20-23 FPS with MJPG) but
> > no strange flickering.
> >
>
> This is really strange and seems to indicate usb bandwidth issues or
> some similar problem, are you using any other device on the
You should also check memory usage, make sure your system is not using swap.
2009/6/24 Paulo Assis
>
>
> 2009/6/24 Saint Germain
>
>> Hi again,
>>
>> I don't have compiz installed.
>>
>
> OK, I just ask because compiz is now set by default in some distros. I use
> it myself but with the vendor
2009/6/24 Saint Germain
> Hi again,
>
> I don't have compiz installed.
OK, I just ask because compiz is now set by default in some distros. I use
it myself but with the vendor driver from nvidia it never caused me any
problems.
>
> Using YUYV, I only got 5 FPS (compared to 20-23 FPS with MJPG
Hi again,
I don't have compiz installed.
Using YUYV, I only got 5 FPS (compared to 20-23 FPS with MJPG) but no
strange flickering.
I've tried disabling hardware acceleration, and I only got less FPS but
the flickering is still here for MJPG (with YUYV I only got 1-2 FPS).
Also, I've also tried w
I almost forgot about the following:
Please make sure you have compiz disable, the last time I used it with a
radeon card I also got this weird flickering on overlay video.
Best regards,
Paulo
___
Linux-uvc-devel mailing list
Linux-uvc-devel@lists.berlio
Hi,
Were you streaming YUYV or MJPG ? Does it make any difference if you change
between the two formats ?
Could you try disabling hardware accelaration: guvcview --hwd_acel=0
and check if the flickering gets any better.
Best regards
Paulo,
2009/6/24 Saint Germain
> Hello,
>
> I've just returne
Hello,
I've just returned my Quickcam Pro 9000 and took a Vision Pro (BCD 0.9)
and I got exactly the same problem (even worse it seems).
I tried your test, and I only got 23 fps with still a lot of
flickering...
Same problem with 2 (slightly) different camera and 2 linux kernel
(2.6.26 and 2.6.3
On Sun, 21 Jun 2009 01:00:26 +0200, Saint Germain
wrote :
> I've just bought a Logitech Quickcam Pro 9000 (3rd generation, BCD
> 0.08) for my Debian Testing (kernel 2.6.26-2-686) and have some frame
> dropped issues with it.
>
> [snip]
>
> Do you think that the problem is in:
> 1) the webcam ha
20 matches
Mail list logo
