On Thu, Jul 17, 2003 at 09:58:00AM -0600, M. Warner Losh wrote: > In message: <[EMAIL PROTECTED]> > Tobias Roth <[EMAIL PROTECTED]> writes: this is caused by > : an irq conflict. the bug was introduced some time between 5.0 and > : 5.1. i have no idea how to solve this, maybe someone else can help > : here. maybe the ibm ps2 tool offers some help. > > details?
kevin oberman suggested the use of the ps2 utility for thinkpads. i did not have the chance to try it out myself. > : another workaround is to free an irq. for me, disabling the pcmcia > : stuff in the kernel config helped. others reported that disabling > : the serial port helped for them. > > interesting. shortly after i discovered this problem, my TP started to have immense problems with the summer heat and started crashing during buildworlds. that's why i didn't look into the irq problem any further at this time. now, i just got my TP back from ibm, and while they did not really fix the heat problem (i will send it back to them next week), i got around to do some irq tests. irqs 0,1,8,12,13,14,15 are set and no subject of manual change. irq 2, i have no idea about. irq 3 and 4 are the infrared device and the serial port. irq 7 is the parallel port irq 6 can be freed by disabling legacy floppy support in the bios. however it does not seem be taken by a different device when freed. this leaves us with irqs 5,9,10,11 to distribute in the pci section of the bios. after some playing around, i set INT[A-H] PCI IRQ to 5,9,10,11,11,9,10,11. I do not know whether the order matters, but the distribution does. like this, every irq is assigned to two devices: 5->uhic0 and cbb0, 9->cbb1 and pcm0, 10->uhic2 and wi0, 11->uhic1 and fxp0. the only drawback i encountered with these settings was a short hang during boot when probing uhic2. it did not hang there before i started switching around irqs, but i do not know what is wrong here. other than that, everything works now. > : this has to be fixed before 5.2, imho. it renders a default install > : on thinkpads useless. note that this does NOT happen on all thinkpad > : systems, i didn't figure out what makes up the difference. > > sounds like a bug that needs to be fixed, but the details are so vague > as to make that impossible. chances are very good that someone with a > clue (like me) will need a machine that fails to fix it. the only odd thing is that 5.0 did not have this bug, while 5.1 has it. if it needs fixing is up to you, i am now happy with the current solution. but then, the default bios settings are so stupid that it may not be feasable to do anything about it. hope that helps, t. _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[EMAIL PROTECTED]"
