Hi there, On Tue, 16 Mar 2004, Maxxer wrote:
> Il mar, 2004-03-16 alle 11:42, Ged Haywood ha scritto: > > You're in just-barely-charted territory. Please read the FAQ, and > > post the information requested. Hmmm... didn't see much of that. > Kernel 2.4.18 with module usb-ohci works the same as 2.6.3: system > stalls, and comes back to life if I unplug the pcmcia. Interesting. Even surprising. Are you sure it stalls completely, or is it just very slow? What happens to the system clock during this 'stall' - does it lose time? The output of cat /proc/interrupts before and after a stall might tell you something (but I was going to let you find that in the FAQ:) if you checked the real time too. > (Note: I left vgrabbj try accessing the usb webcam for 5 minutes. Right > now the card is like a grill, I can make an egg on it!) That's very bad. Cooking electronics is dying electronics. > I've tried opening the console on tail -f /var/log/dmesg when launching > vgrabbj but nothing appears. You don't tail dmesg, you run it. If you need to, you can pipe the output of dmesg into a pager, for example: dmesg | less > It happens SOME RARE times that the program CAN read image from the > device. Actually while I was continuously trying to plug and remove the > card it managed to read an image from the cam and correctly come back to > the prompt. And one other time, even if I removed the card while the > program was reading, it could grab an image to file! That might tally with Brad's surmise that the machine just isn't powerful enough. It could also mean that you have a combination of flaky hardware and dodgy software but I'm starting to think that's not the explanation. > Is there any way so I can understand if it's a hardware / module / > pwc(webcam module) problem? That was the point of asking you to read the FAQ before getting back to us with the information requested. > Should I try one more 2.4 kernel? Older or newer than 2.4.18? I'm beginning to think that you won't get this working no matter what you do. Did you say that it works with Win98 on this machine? Or is it just a similar machine? Have you run Linux on the similar machine? Don't forget that Windows isn't a full-blown multi-user multi-tasking operating system, so it might have a few more processor cycles spare for the USB stuff than Linux does. Also there are a lot of device- specific tweaks in the Windows drivers that can't be done in the Linux drivers for lack of information, or time, or both. Anyway I think I'd probably try 2.4.25 and early 2.6 kernels if I had the impetus but be prepared for disappointment. 73, Ged. ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
