Messages in this thread | | | From | Paul Ashton <> | Subject | Re: 2.3.15/16: USB mouse, keyboard and camera problems... | Date | Fri, 03 Sep 1999 08:17:21 +0100 |
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> - With kernel 2.3.15, there seems to be occasional (20% of key-presses) very > high latency before key events are passed from the USB keyboard on to other > layers. Around a few seconds. Characters get repeated due to the key-up > event getting delayed.
If you read the archives http://lists.suse.com/archives/linux-usb/ you'll see this discussed in August and September. To fix it the uhci driver needs to ignore other drivers' interrupts, and the keyboard driver needs to handle non 0 status packets. Patch to uhci was posted in: http://lists.suse.com/archives/linux-usb/1999-Sep/0030.html and the suggestion for the keyboard fix (not implemented, since I don't have one) was in: http://lists.suse.com/archives/linux-usb/1999-Sep/0004.html
> - When using my USB mouse under X, the mouse pointer continues to move in > the direction it was moving last only at around 2 increments/s (delta x & y > is not being zero'd when the interrupts stop being generated?).
Discussion: http://lists.suse.com/archives/linux-usb/1999-Sep/0002.html Patch: http://lists.suse.com/archives/linux-usb/1999-Sep/0003.html (sent to Linus prior to 2.3.14 and resent a couple of days ago, no reply yet).
> With kernel 2.3.16, the X server fails to open the mouse device > (/dev/usbmouse setup as IMPS/2, char, major 10, minor 32), and exits. The > keyboard works somewhat better, with the occasional hiccup.
Works for me in 2.3.15 and 2.3.16 preferably with the above patch.
> My Philips PCA645VC USB web-cam isn't recognised. I think it's CPiA based, > but when I compile in support for it (w/ v4l), it isn't identified.
Don't know about that.
> I am reluctant to post bug reports, etc to the USB mailing list, since it's > a closed list, and I don't have the connectivity to subscribe and get lots > of email all the time. Once I'm back at uni though.....
It isn't closed. In fact it seems impossible to subscribe to. I've sent 4 or 5 requests and received no replies, so I read it via the archives and post to it without subscribing.
Paul
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