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Old 09-07-05, 11:22 PM   #1
Shplad
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Default USB conflicts on Abit NF7-S

Hi friends:

I have an Abit NF7-S ver. 2.0 motherboard. The board is using version 2.5 of
the Abit BIOS. The board has an Athlon XP Mobile 2500+ CPU and 256 MB of
RAM installed.

I am running KnoppMyth R5A12 on it (Debian Sarge, 2.6.9 custom kernel
variant).

The board works well except for one thing: As soon as I plug any USB device
into any USB port, the machine cannot get an IP address, or the networking
stops working. I have wracked my brain to figure out what the problem is.

1. Moving the one PCI card that's in the box to all 5 diff. slots.
2. Removing the PCI card entirely.
3. Changing most of the USB settings in the hardware setup utility.
4. Setting USB to use or not use an interrupt.

Nothing seems to help. As soon as I disconnect any USB devices and reboot,
the problem goes away.

Does anyone have any suggestions? I'm at a loss here, and this is a very important machine.



Thanks


Shplad
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Abit NF7-S
Athlon XP Mobile 2500+
Nvidia 6600GT 128MB AGP
256MB Geil DDR3500 RAM
Samsung Spinpoint SATA 120GB
NEC ND-3520A DVD-RW
Seasonic Super Tornado 350
Silverstone LC-03B
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Old 09-08-05, 04:19 AM   #2
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Default Re: USB conflicts on Abit NF7-S

Try enabling IO-APIC in the kernel if your sharing IRQ's through legacy PIC mode.
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Old 09-09-05, 02:12 AM   #3
Shplad
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Default Re: USB conflicts on Abit NF7-S

Spyke:

Finally, someone gives me reasonable sounding suggestion. Thanks!

Question: Is that the feature that will re-enable the other 8 interrupts?
I know that if it is, KnoppMyth has some issues with it, or at least
it does during installation. If I enable it, and it causes problems, will I
be able to go back to square one by disabling it, or will enabling it have
screwed with all my interrupt assingments? In other words, are the effects
of enabling it completely reversible?

I'm not exactly sure what that feature does, or how it differs from enabling
APIC. Can you possibly (please) point me to a reference of some sort?

Thanks again.


shplad
__________________
Abit NF7-S
Athlon XP Mobile 2500+
Nvidia 6600GT 128MB AGP
256MB Geil DDR3500 RAM
Samsung Spinpoint SATA 120GB
NEC ND-3520A DVD-RW
Seasonic Super Tornado 350
Silverstone LC-03B
BTC 5113 Wireless Keyboard
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Old 09-09-05, 03:01 AM   #4
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Default Re: USB conflicts on Abit NF7-S

It enables more IRQ's, some machines have as many as 256, it depends, and yes, its reversable.
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Gaming:
Intel i7 980X @ 4GHz | ASUS Rampage III Extreme | GTX 480 3Way SLI @ 900Mhz | Koolance VID-NX480 | Corsair Obsidian 700D
Corsair H70 CPU Cooler | EK-FB RE3 | Corsair AX1200 | Black Ice SR1 360 | 240GB OCZ Revodrive X2 SSD | Windows 7 Ultimate
12GB Corsair Dominator GT @ 8-8-8-24-1T DDR3-1600 | Onkyo TX SR-707 | 70" Sharp Aquos LCD | KEF Audio 5.1 C3/C6LCR/C7
Workstation:
Intel i7 920 D0 @ 4GHz | ASUS Rampage II Extreme | GTX 480 @ 800Mhz | Koolance VID-NX480 | Lian-Li V1200B | Corsair HX1000
EK NB ASUS HP | Watercool HeatKiller 3.0 | Feser Extreme X-360 | 2x160GB Intel X25-M SSD RAID0 | 4x2TB WD20EARS RAID10
12GB Corsair Dominator @ 8-8-8-24-1T DDR3-1600 | Creative X-Fi Titanium | Pioneer DVR-212D | Gentoo Linux
Dell 3008WFP | JohnBlue JB3 | CityPulse DA2.03e II DAC | KingRex T20U w/ Modded Auricaps & PSU | Glow Audio Sub One
Server:
Quad Socket Opteron 8356 (16 cores) @ 2.3GHz | Supermicro H8QMi-2 | Supermicro 2U Chassis | Redundant 1200W PSU
32GB 2GBx16 DDR2-667 ECC | 4x 300GB Cheetah SAS RAID10 | Adaptec 5805 512MB w/BBU | Colocated | Gentoo Linux
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Old 09-16-05, 07:35 PM   #5
Shplad
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Default Re: USB conflicts on Abit NF7-S

Well, it turns out switching on APIC in KnoppMyth will really mess things up.
It's a known issue that can't be solved for a while yet. Complicated stuff apparently.

Any other suggestions?


thanks

shplad
__________________
Abit NF7-S
Athlon XP Mobile 2500+
Nvidia 6600GT 128MB AGP
256MB Geil DDR3500 RAM
Samsung Spinpoint SATA 120GB
NEC ND-3520A DVD-RW
Seasonic Super Tornado 350
Silverstone LC-03B
BTC 5113 Wireless Keyboard
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