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I have a via motherboard (on loan from work, mine's broke) and a nV ti 4400. AGP simple won't work.

I have tried: Latest Gentoo stable drivers: (4496) Latest nVidia stable drivers (5336) These were supposed to fix some issues with via and agp.

I have tried AGP: agpgart built in, nvidia drivers using mode 3 (try aggart then nvAgp) agpgart not built, nvidia drivers set to NvAGP mode 1 (nvagp only) or 3 (try agp, then nvidia) agpgart built as module, trying nvidia only (nope) then mode 3 again (loaded agpgart fine)

The host bridge claims it's supported by agpgart and nvagp.

now, debugging outputs:

- -------lspci------- 00:00.0 Host bridge: VIA Technologies, Inc. VT8375 [KM266/KL266] Host Bridge 00:01.0 PCI bridge: VIA Technologies, Inc. VT8633 [Apollo Pro266 AGP] 00:10.0 USB Controller: VIA Technologies, Inc. USB (rev 80) 00:10.1 USB Controller: VIA Technologies, Inc. USB (rev 80) 00:10.2 USB Controller: VIA Technologies, Inc. USB (rev 80) 00:10.3 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 82) 00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge 00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT8233/A/C/VT8235 PIPC Bus Master IDE (rev 06) 00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235 AC97 Audio Controller (rev 50) 00:11.6 Communication controller: VIA Technologies, Inc. Intel 537 [AC97 Modem] (rev 80) 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 74) 01:00.0 VGA compatible controller: nVidia Corporation NV25 [GeForce4 Ti 4400] (rev a2)

- -------proc------- ~ cat /proc/driver/nvidia/agp/card Fast Writes: Supported SBA: Supported AGP Rates: 4x 2x 1x Registers: 0x1f000217:0x00000000

cat /proc/driver/nvidia/agp/host-bridge Host Bridge: VIA Technologies, Inc. VT8375 [KM266/KL266] Host Bridge Fast Writes: Not Supported SBA: Supported AGP Rates: 4x 2x 1x Registers: 0x1f000207:0x00000000

cat /proc/driver/nvidia/agp/status Status: Disabled

- -------XF86Config------- (clipped) Section "Device" ~ Identifier "ti" ~ Driver "nvidia" # Driver "nv" ~ #VideoRam 131072

# ---AGP--- # 0 = Off # 1 = NvAGP only # 2 = AGPGart only # 3 = Try AGPGart, then NvAGP - default

Option "NvAGP" "1" # use AGPGart if poss. then use agpgart, if poss.

Option "NoDDC" "false" Option "DPMS" Option "RenderAccel" "true" Option "AGPMode" "4" #Option "AGPFastWrite" "true" Option "EnableDepthMoves" "true" Option "EnablePageFlip" "true" Option "HWCursor" "true" Option "CursorShadow" "true"

Option "Xinerama" "on"

Option "TwinView" Option "SecondMonitorHorizSync" "30-95" Option "SecondMonitorVertRefresh" "60-100" Option "MetaModes" "1280x1024,1280x1024; 1024x768,1024x768; NULL,1280x1024; NULL,800x600" Option "TwinViewOrientation" "LeftOf" Option "ConnectedMonitor" "CRT, CRT" ~ # Insert Clocks lines here if appropriate EndSection

- -------lsmod------- Module Size Used by nvidia 2068168 12 via_agp 5184 1 agpgart 26408 1 via_agp

- -------dmesg------- (agpgart as module) Linux agpgart interface v0.100 (c) Dave Jones agpgart: Detected VIA PM266/KM266 chipset agpgart: Maximum main memory to use for agp memory: 690M agpgart: AGP aperture is 256M @ 0xe0000000 eth0: Setting full-duplex based on MII #1 link partner capability of 45e1. smbfs: Unrecognized mount option umask smbfs: Unrecognized mount option umask smbfs: Unrecognized mount option umask smbfs: Unrecognized mount option umask smbfs: Unrecognized mount option umask atkbd.c: Unknown key released (translated set 2, code 0x7a on isa0060/serio0). atkbd.c: This is an XFree86 bug. It shouldn't access hardware directly. atkbd.c: Unknown key released (translated set 2, code 0x7a on isa0060/serio0). atkbd.c: This is an XFree86 bug. It shouldn't access hardware directly. nvidia: no version magic, tainting kernel. nvidia: module license 'NVIDIA' taints kernel. 0: nvidia: loading NVIDIA Linux x86 NVIDIA Kernel Module 1.0-5336 Wed Jan 14 18:29:26 PST 2004 0: NVRM: not using NVAGP, AGPGART is loaded!!