nforce3-250: no apg or iommu

seandarcy · 05-10-06, 08:55 PM

I have a gigabyte K8NSC-939 - nforce3-250, with amd64-3000, 1 gig of ram and a radeon 8500 agp card. Runing fedora core 5.

dmesg:
.........
Linux version 2.6.16-1.2196_FC6
.................
Allocating PCI resources starting at 50000000 (gap: 40000000:bec00000)
Checking aperture...
CPU 0: aperture @ f0000000 size 32 MB
Aperture from northbridge cpu 0 too small (32 MB)
AGP bridge at 00:00:00
Aperture from AGP @ f0000000 size 4096 MB (APSIZE 0)
Aperture from AGP bridge too small (0 MB)
Your BIOS doesn't leave a aperture memory hole
Please enable the IOMMU option in the BIOS setup
This costs you 64 MB of RAM
Mapping aperture over 65536 KB of RAM @ 4000000
.............
agpgart: Detected AGP bridge 0
agpgart: Aperture conflicts with PCI mapping.
agpgart: Aperture from AGP @ f0000000 size 4096 MB
agpgart: Aperture too small (0 MB)
agpgart: No usable aperture found.
agpgart: Consider rebooting with iommu=memaper=2 to get a good aperture.
PCI-DMA: Disabling IOMMU.
............
[drm] Initialized drm 1.0.1 20051102
ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [APC5] -> GSI 16 (level, low) -> IRQ 209
[drm] Initialized radeon 1.24.0 20060225 on minor 0
[drm] Initialized radeon 1.24.0 20060225 on minor 1
mtrr: 0xe8000000,0x8000000 overlaps existing 0xe8000000,0x4000000
[drm:radeon_cp_init] *ERROR* radeon_cp_init called without lock held
[drm:drm_unlock] *ERROR* Process 2309 using kernel context 0
................
So agp doesn't start. X starts but no openGL.

Bios, F8 december 2005, doesn't seem to have anything about agp aperture.

I've tried the iommu setting ( which I thought was only for > 4 gigs ), but that also failed.

Any help really appreciated.

sean

fahlen · 05-19-06, 03:16 PM

Did you figure out how to solve your problem? I have the same problem and the same motherboard...

05-10-06, 08:55 PM	#1
seandarcy Registered User Join Date: Jan 2005 Posts: 8	nforce3-250: no apg or iommu I have a gigabyte K8NSC-939 - nforce3-250, with amd64-3000, 1 gig of ram and a radeon 8500 agp card. Runing fedora core 5. dmesg: ......... Linux version 2.6.16-1.2196_FC6 ................. Allocating PCI resources starting at 50000000 (gap: 40000000:bec00000) Checking aperture... CPU 0: aperture @ f0000000 size 32 MB Aperture from northbridge cpu 0 too small (32 MB) AGP bridge at 00:00:00 Aperture from AGP @ f0000000 size 4096 MB (APSIZE 0) Aperture from AGP bridge too small (0 MB) Your BIOS doesn't leave a aperture memory hole Please enable the IOMMU option in the BIOS setup This costs you 64 MB of RAM Mapping aperture over 65536 KB of RAM @ 4000000 ............. agpgart: Detected AGP bridge 0 agpgart: Aperture conflicts with PCI mapping. agpgart: Aperture from AGP @ f0000000 size 4096 MB agpgart: Aperture too small (0 MB) agpgart: No usable aperture found. agpgart: Consider rebooting with iommu=memaper=2 to get a good aperture. PCI-DMA: Disabling IOMMU. ............ [drm] Initialized drm 1.0.1 20051102 ACPI: PCI Interrupt 0000:01:00.0[A] -> Link [APC5] -> GSI 16 (level, low) -> IRQ 209 [drm] Initialized radeon 1.24.0 20060225 on minor 0 [drm] Initialized radeon 1.24.0 20060225 on minor 1 mtrr: 0xe8000000,0x8000000 overlaps existing 0xe8000000,0x4000000 [drm:radeon_cp_init] ERROR radeon_cp_init called without lock held [drm:drm_unlock] ERROR Process 2309 using kernel context 0 ................ So agp doesn't start. X starts but no openGL. Bios, F8 december 2005, doesn't seem to have anything about agp aperture. I've tried the iommu setting ( which I thought was only for > 4 gigs ), but that also failed. Any help really appreciated. sean

05-19-06, 03:16 PM	#2
fahlen Registered User Join Date: Feb 2005 Posts: 3	Re: nforce3-250: no apg or iommu Did you figure out how to solve your problem? I have the same problem and the same motherboard...