Messages in this thread | | | Date | Wed, 10 Apr 2002 12:52:15 -0500 (CDT) | From | Brent Cook <> | Subject | Re: Mouse interrupts: the death knell of a VP6 |
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On Wed, 10 Apr 2002, John Adams wrote:
> On Wednesday 10 April 2002 11:23 am, Oleg Drokin wrote: > > Hello! > > > > On Wed, Apr 10, 2002 at 09:02:05AM -0500, Brent Cook wrote: > > > I have an ABIT VP6 motherboard, using the VIA Apollo chipset and 2 > > > 700Mhz PIII's, but please don't hold that against me. The system is > > > running 2.4.19-pre6. I believe that I either have a system that has > > > trouble handling a sudden bursts of interrupts, or have found a fault > > > in mouse handling. > > > > Have you tried to change MPS mode to 1.1 from 1.4 (I see addres message > > timeouts in your log)? > > > > > I have already tried removing memory, adding memory, changing > > > processors, video cards. The only thing that has remained constant is > > > the VP6 motherboard and the hard drive. > > > > My VP6 died on me recently with some funny symptoms: > > it hangs in X when I start netscape and move mouse, or if I do > > bk clone on kernel tree, it dies with > > kernel BUG at /usr/src/linux-2.4.18/include/asm/smplock.h:62! > > BUG in various places pretty soon. > > (this BUG is only appears if 2 CPUs are present in motherboard). > > So if your troubles began only recently, you might want to try another > > motherboard just to be sure. > > I have a VP6 with 2 CPUs. Its has both a PS/2 mouse and a usb mouse. Its > been up for 90 days and handled lots of mouse interrupts. See below. > CPU0 CPU1 > 0: 392228152 392338774 IO-APIC-edge timer > 1: 312494 312380 IO-APIC-edge keyboard > 2: 0 0 XT-PIC cascade > 3: 1 3 IO-APIC-edge serial > 12: 40362907 40324010 IO-APIC-edge PS/2 Mouse > 14: 3386577 3383180 IO-APIC-edge ide0 > 15: 679030 672810 IO-APIC-edge ide1 > 17: 1165246 1162993 IO-APIC-level DC395x_TRM > 18: 83937970 83935445 IO-APIC-level ide2, eth0 > 19: 131956 132468 IO-APIC-level es1371, usb-uhci, usb-uhci > NMI: 0 0 > LOC: 784686934 784686951 > ERR: 191 > MIS: 0
Oleg's suggestion about MPS didn't work, but it was fun. Instead of dying instantly, a USB mouse pauses about 9 times before it finally halts. The device in dmesg also disconnects/reconnects 9 times before it is unable to assign a device number again to the mouse. PS/2 still locks the entire machine. Loading and unloading usb-uhci.o does reinitialize the USB mouse for a while, so it is fixable w/o rebooting.
This is also interesting. You appear to not have the strange ACPI device at hardware interrupt 9 that I do. While the VP6 BIOS does not have the option to turn off ACPI, perhaps I should try one of the hacked bioses at abitvp6.com to turn off ACPI (maybe it is the culprit..) This is my current situation (right after a USB lock):
CPU0 CPU1 0: 260203 267484 IO-APIC-edge timer 1: 10471 10704 IO-APIC-edge keyboard 2: 0 0 XT-PIC cascade 5: 29249 29198 IO-APIC-level usb-uhci, usb-uhci 9: 0 0 IO-APIC-edge acpi 10: 13715 13332 IO-APIC-level eth0 14: 6255 5839 IO-APIC-edge ide0 15: 10 3 IO-APIC-edge ide1 NMI: 0 0 LOC: 527647 527647 ERR: 0 MIS: 0
The acpi device appears whether or not I have ACPI support in the kernel.
- Brent
> Its running a recent kernel. Maybe 2.4.18 is broken. Here's a uname -a > Linux flash 2.5.0 #16 SMP Wed Jan 9 16:48:16 EST 2002 i686 unknown > > johna
2.5 exhibits similar behavior.
Thanks, Brent
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