Can't get AGP enabled - help!

[hirschma]

I'm hoping that someone can help me get AGP enabled on my Gentoo installation. This has never been an issue before with other computers.

The machine in question is a Dell Dimension 4550 with i845PE chipset. I have a Gainward dual DVI Ti4600 in the machine.

Video works fine except for the AGP issue, and everything is fine under Win2k on the same machine. Using the 3123 drivers.

Some info... from /proc...
jonathan@bigdell log $ cat /proc/driver/nvidia/agp/card
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x1f000217:0x00000000

jonathan@bigdell log $ cat /proc/driver/nvidia/agp/host-bridge
Host Bridge: Intel (unknown)
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x1f000217:0x00000000

jonathan@bigdell log $ cat /proc/driver/nvidia/agp/status
Status: Disabled

from lsmod:
Module Size Used by Tainted: P
smbfs 32256 1 (autoclean)
NVdriver 1062976 10
agpgart 25580 0
rtc 6720 0 (autoclean)

I've tried using and not using agpgart, didn't help.

from dmesg:
Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 203M
agpgart: Detected Intel i845G chipset
agpgart: AGP aperture is 128M @ 0xe0000000

note that agpgart picks up a diifferent chipset.

from /etc/modules.d/nvidia:
jonathan@bigdell etc $ cat /etc/modules.d/nvidia
alias char-major-195 NVdriver
options agp_try_unsupported=1
(i've also tried without the try_unsupported, too).

My /etc/X11/XF86Config...

Section "Device"
Identifier "ti4600"
Driver "nvidia"
#VideoRam 131072
# Insert Clocks lines here if appropriate
Option "ConnectedMonitor" "DFP,DFP"
# Option "UseEdidFreqs" "true"
Option "TwinView"
Option "NvAgp" "3"
Option "MetaModes" "1024x768,1024x768"
Option "SecondMonitorHorizSync" "31.5 - 57.0"
Option "SecondMonitorVertRefresh" "50-90"
Option "TwinViewOrientation" "LeftOf"
Option "NoLogo" "false"
Option "CursorShadow" "true"
EndSection
Again, video is great (especially twinview on two digital FPDs!), just no AGP.

Lastly, two warnings from /var/log/XFree86.0.log:
(WW) Open APM failed (/dev/apm_bios) (No such file or directory)
(WW) NVIDIA(0): Failed to verify AGP usage
Not sure if the APM warning is related or not.

Anyone have any ideas?

Thanks.

jonathan

[Andy Mecham]

Have you tried using NVAGP? (Option "NvAgp" "1") It's recommended that you reboot when switching AGP drivers, as some chips don't appreciate being reprogrammed.

The APM message is unrelated.

--andy

[hirschma]

Originally posted by Andy Mecham
Have you tried using NVAGP? (Option "NvAgp" "1")


--andy

Did not work. Removed agpgart from /etc/modules.autoload, changed the option as per above, rebooted. No dice, I'm afraid.

jonathan

[tspinillo]

I had a similiar problem (ASUS-P533-V 845G chipset). I removed agpgart.o from /lib/modules/kernelversion etc. depmod -a.
As a sanity check, verify NvAgp is set to 1 as Andy said and check loaded modules (lsmod) to be sure that the kernel's agpgart is not loaded.

With any luck. I'll be installing a 845PE board this weekend, I will re-verify and check in if I see a problem on this end.

Good luck,

t

[hirschma]

Renamed agpgart.o and ran depmod -a. lsmod confirms that it is not loaded. NvAgp definitely set to "1". Still showing disabled...

Thanks for the idea.

jonathan

[churritz]

This problem can be fixed by selecting a SINGLE the kernel agp driver for your card in kernel configuration. If you have I8* and AMD760 compiled together it may never see either of them. Just pick one and it should enable agp :)

[etr]

Are you using a custom compiled kernel? The driver does call some kernel code, and will fail to load if it is not available. I got a similar message and it was ultimately traced down to my having compiled MTRR (memory type range register) support into my kernel.