> > I've seen this behavior before; on my system in addition to the doubled keystrokes, > cursor animations were jerky. > > Are you running on a 64-bit kernel, is your clocksource hpet and is vsyscall64 on? > > $ uname -m > x86_64 > $ cat /sys/devices/system/clocksource/clocksource0/current_clocksource > hpet > $ cat /proc/sys/kernel/vsyscall64 > 1 > > If so, try putting this into your /etc/sysctl.conf and rebooting: > > # vsyscall64 off > kernel.vsyscall64 = 0 > Kernel is i686 (32bit), clocksource is tsc and vsyscall64 does not exist. Only console, no X. In the meantime I have further tried to detect a possible reason and I guess I kow it now. But I do not know how to overcome: The system is booted from USB memorystick. The keyboard is a USB keyboard. And there is an IMON VFD display connected by USB. To use it I run the lcdproc package. It seems that the LCDd daemon (with imon_pad driver) is the reason. It causes problems with the keyboard (as described in the topic) and also with access to the memorystick. If I use a PS/2 keyboard the keyboard problem does not occur. But after a while the system still gives messages like usb 5-3: reset high speed USB device using ehci_hcd and adress 3 usb 5-3: device not accepting adress 3, error -10 If I do not start LCDd then both keyboard and memorystick access keep stable. So I suppose that updating the VFD display by LCDd via the USB interface is the problem. But this is happening now the first time with use of 2.6.24-rt1. So avoiding LCDd helps but I like to use the VFD display. How to solve? BTW I have noticed another effect: with a PS/2 keyboard the screen switches off after some time of non-use (screensaver?). With an USB keyboard the screen never switches off. If someone can comment helpfully I would be happy. Best Uli - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
