nVidia 260M throwing lots of errors!

[snakernetb]

01:00.0 VGA compatible controller: nVidia Corporation Device 0618 (rev a2)

Feb 16 23:45:00 localhost kernel: DMAR:[DMA Read] Request device [01:00.0] fault addr 0
Feb 16 23:45:00 localhost kernel: DMAR:[fault reason 06] PTE Read access is not set
Feb 16 23:45:00 localhost kernel: DRHD: handling fault status reg 3

This error is just scrolling in /var/log/messages. I have an Asus G51 with nVidia GTX 260M w/ CUDA and this error won't stop. Any help is appreciated.

[dhimes]

Does this machine have an onboard video chip also?

[snakernetb]

No I believe it only has the graphics card.

[root@pegasus log]# lspci
00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07)
00:01.0 PCI bridge: Intel Corporation Mobile 4 Series Chipset PCI Express Graphics Port (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 03)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI Controller (rev 03)
01:00.0 VGA compatible controller: nVidia Corporation Device 0618 (rev a2) <-------
03:00.0 Network controller: Intel Corporation WiFi Link 100 Series
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
07:01.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
07:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
07:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
07:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
07:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev ff)

[dhimes]

I'm not sure if this will help:
https://lists.linux-foundation.org/p...ry/001029.html
If nothing else, it's reassuring that you're not alone, and also that someone's been looking at it for a while.

I don't know if intel_iommu=off can be make as a kernel option or not. It may be worth a try.

I'm working on a different graphics problem, and when I change configurations and boot I always

1. enter kernel parameters from grub, not by editing the grub.conf until I am sure it works; and
2. start with runlevel 3, then "startx" once I'm in. That way, if I'm left with a black screen, I can ctrl-alt-backspace and be back in term mode

Is that how you experiment with configurations, or is there a better way?

[snakernetb]

Just add iommu=soft to kernel arguments in /etc/grub.conf.

title Fedora (2.6.31.12-174.2.22.fc12.x86_64)
root (hd0,2)
kernel /vmlinuz-2.6.31.12-174.2.22.fc12.x86_64 ro root=/dev/mapper/luks-0ee590cc-a365-42dc-bb5c-6001f8996cab LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun1
6 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet rdblacklist=nouveau iommu=soft

[dhimes]

Thanks for the follow-up.