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Scott 2000-10-23 04:45
Does anyone have any experience using ACPI, multi-monitors, and Win2K?
I am wondering if multi-monitors breaks ACPI in any way.
Thanks,
Scott
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Kyle 2000-10-23 09:06
I had a problem with ACPI in windows ME when I had my second (PCI) video card in a PCI slot that shared an IRQ with ACPI- on the KT7-Raid, thats slots 2 and 3 (counting from the one closest to the AGP port) I had no problems installing the two video cards and a sound card, but I got windows protection errors on boot if I tried to install a fourth card- (3COM NIC) didn't matter which PCI slot, and I had no less than 4 free IRQs ( I disabled LPT, COM1, COM2 and USB) I even tried installing windows with ACPI disabled, sorry can't remember the command off the top of my head, but that didn't help either- ACPI is far-reaching and I highly recommend leaving it on. Anyway, I finally moved the PCI vid card to another slot and put the NIC there instead and reinstalled windows onto a freshly formatted disk and it's been flawless ever since. Bottom line, ACPI and video cards don't mix if they are sharing an IRQ, just like two vid cards don't like to share an IRQ. I'm no expert, and I don't make any claims as to whether this info will jive with win2k, but it took me a solid week of tearing my hair out and reading FAQs and manuals to figure this out, and I pass it along in the hopes that it'll save you some trouble. good luck -
Kyle
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PERSON01 2000-10-23 09:36
I do!
My hardware is as follows:
Video:
Nvidia TNT2 Ultra (Diamond Viper 770 - AGP)
Permedia2 x4 (Appian Jeronimo Pro - PCI)
System:
PIII 650
Abit BX6 Rev 2 (BIOS version BXRNW)
OS is Win2k. It works great, no problems!
Eric
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Scott 2000-10-23 11:27
Thanks guys. I've been there with SCSI and overclocking, Kyle. I appreciate the help a lot.
If its of any help to anyone, I'll be using a TNT1 AGP and either a TNT1 PCI or a TNT2 M64 PCI. I haven't bought the PCI yet.
I've read somewhere that If I have an AGP and PCI card install on the same system that the PCI is chosen as the primary display device. Is this true?
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Scott 2000-10-23 11:30
Eric-
Are you using ACPI to?
You have 5 monitors hooked up? damn, I wana see a pic of that. That would be nice.
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Michel 2000-10-24 06:47
No IRQ problems with the W2K ACPI Multiprocessor HAL with the following system:
Abit BP6 with all slots filled: Matrox G400 AGP (16MB, primary in BIOS), Matrox Millennium I PCI (8 MB, VGA disabled), SB Live! Value Ed., ASUS SC875 Ultra SCSI PCI, Adaptec 2940 Fast SCSI PCI, DLINK 528CT NIC, and finally a USR Sportster modem in the one ISA slot.
I think the only reason this works is that the Millennium card uses no IRQ; it is in the PCI slot adjacent to the AGP, and normally that slot shares an IRQ with the AGP.
I've set "PNP OS" to "enabled" in the PNP options screen of the BIOS, both when I installed W2K and subsequently. Apparently that lets the OS do all the PNP configuration (at least for devices it supports!), and that may be another part of the way to success.
But the whole subject of IRQ sharing is complicated, especially with the multiprocessors. For instance, the BIOS listing of devices shows a lot of my cards on IRQ 10, but ACPI revectors all of them, so that:
G400 -> IRQ 16
ASUS SCSI -> IRQ 17
Adaptec -> IRQ 18
SB Live -> IRQ 19
USB -> " "
DLINK -> " "
Anyway, the system seems rock solid, which is what counts.
Michel.
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Kyle 2000-10-24 11:04
I've read somewhere that If I have an AGP and PCI card install on the same system that the PCI is chosen as the primary
display device. Is this true?
any fairly new motherboard will let you choose which to init first in the bios- (my old ABIT BH6 had it, and so does the KT7-RAID) if there is no such setting, it will default to PCI
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Mur 2000-10-28 15:12
The reason why people have problem with ACPI is that it might force both of your video cards onto the same IRQ, and dual mons won't work like this. Even if you try to set the IRQs in your bios, once you boot up ACPI will take over..
The solution to this is to disable ACPI and have Windows 2000 treat your computer as a standard PC. Then you also have control over your IRQs, if you need it. (disclaimer: This might not be for the weak of heart.. proceed at your own risk. I can only say that it worked for me.)
- go to your device manager
- open up the computer menu
- right click the computer icon that shows up
- go to properties->driver tab->update driver->next->display a list of suitable known drivers
- choose standard PC, click next, etc, etc.
Your computer will now reboot a few times, re-detect your devices, and you'll have control over your IRQs (now make sure your video cards aren't sharing one :))!
- Mur
adam@netsetdesign.com
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