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Old 04-11-08, 01:10 PM   #1
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Default ASUS K8V-X SE X Bombs on AGP Init - Work-Around Found


Upgrading to the 64-bit Ubuntu distribution resolved this issue without any fuss. I hope this thread can help someone find this answer more quickly than I did.

Again, thank you to those who read this.


When GDM starts at boot I get a garbled screen of black-and-white block characters that flash, however I can still switch to a VT. When I disabled GDM and manually did startx -- -logverbose 6, my system immediately hard-locked and stopped pinging.

It appears that it is an issue with AGP. From dmesg:
[   66.893094] agpgart: Found an AGP 3.0 compliant device at 0000:00:00.0.
[   66.893263] agpgart: Device is in legacy mode, falling back to 2.x
[   66.893395] agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
[   66.893588] agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
[   67.555926] NVRM: Xid (0001:00): 6, PE0000 1ffc ffffffff 00000000 ffffffff 00000000
Normally when the system loads it has the amd64_agp and agpgart modules loaded. If I blacklist amd64_agp the system comes up fine, however /proc/driver/nvidia/agp/status shows
Status:          Disabled

AGP initialization failed, please check the ouput  
of the 'dmesg' command and/or your system log file 
for additional information on this problem.
My motherboard has a K8T800Pro Host Bridge and a VT8237 PCVT8237 PCI bridge, however when I load the via_agp kernel module via /etc/modules, I get the same Status: Disabled message in agp/status

I am running Ubuntu 7.10 and have tried the Ubuntu-supplied driver package (9639) as well as the latest driver package from the nVidia site, as well as a staggering array of BIOS options without success. I have an ASUS K8V-X SE motherboard with the latest BIOS (1501), an AMD Athilon64 2000+, and a GeForce 3 TI 500.

Currently I have the nVidia drivers up and running, but the performance is kinda poor as one might expect. Can anyone tell me what's going on with the AGP?

Attached is the bug report log after starting GDM with the distro-supplied 9639 package. As stated previously startx -- -logverbose 6 results in immediate hard-lock, so that is not present.

I had read that blacklisting both AGP kernel modules would result in the NvAGP taking over, however I just tried it and this did not happen.

Contents of /etc/modprobe.d/blacklist-agp:
blacklist amd64_agp
blacklist agpgart
Output from lsmod | grep agp:
agpgart                35016  1 nvidia
Am I doing something wrong here?

[edit 2]
I just tried setting "NvAGP" in my xorg.conf file to 3, that did not work. Neither did setting it to 1.

Apparently my Google-Fu is weak. Turns out to be a known issue with this motherboard.

http://ubuntuforums.org/showthread.php?t=311772&page=2 (bottom of page)

I'll try using the 64-bit distro as suggested in the first link and see how it goes. Thanks to those who have read this.

Attached Files
File Type: log nvidia-bug-report.log (76.0 KB, 87 views)

Last edited by qbradq; 04-12-08 at 08:17 PM. Reason: Work-Around Found
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