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Thanks to every one who suggested possible causes and solutions to the "mouse busy" problem when a second disk is present in the Ultra bay of my TP 760CD. The problem, indeed, is that my ethernet pcmcia card is grabbing irq 12 whenever a second disk is present in the ultrabay which grabs irq 15. When there is no disk in the ultra bay, the pcmcia card grabs irq 15, leaving irq 12 for the mouse. As for the solution, putting "exclude irq 12" in pcmcia/config.opts does not work for me (I have pcmcia-cs-2.8.9 and linux-1.2.13 on my system). Changing the pcmcia code and recompiling it, however, as suggested by Brian Mahaffy, did the trick. Thanks again. -- Hira. > Brian Mahaffy writes: > | You need to go into the PCMCIA sources and change the interupt scan routines > | to search 15->13,11->0,12 instead of 15->0. It is in modules/i82365.c > | around line 400. > | > | If you aren't using PCMCIA, its probably something similar with some other > | autoconfiged interupt using 12, /proc/interrupts will tell you. You will > | have to chase it down. > > Nah. With the version of PCMCIA services that I have, you can just put > > exclude irq 12 > > in your /etc/pcmcia/config.opts file. That should make PCMCIA avoid 12, > leaving it free for the mouse. > Lee Hetherington