Re: [Xen-users] GTX 670 Tips?

[Casey DeLorme <cdelorme@xxxxxxxxx>]

On Sun, Oct 27, 2013 at 3:40 PM, Gordan Bobic <gordan@xxxxxxxxxx> wrote:

That sounds like the PCI ID instability I was talking about. You cannot just remove the resistors. You have to either replace them or mod the firmware straps to compensate for the instability.

The device is detected as a GK104 by Linux, but the driver doesn't know device ID of 0x11af so it doesn't work. Nouveau is more tolerant of dodgy device IDs.

Oddly the Debian Dom0 sees it as the GK104, as does the Ubuntu 13.10 I just installed, and the Windows 8 system I've been using all week.

Debian Dom0 sees:

  03:00.0 VGA compatible controller: NVIDIA Corporation GK104GL [VGX K2] (rev a1)

  03:00.1 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)

Debian DomU (PCI Passthru) Sees:

  00:06.0 VGA compatible controller: NVIDIA Corporation Device 11af (rev a1)

  00:07.0 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)

Ubuntu DomU (PCI Passthru) Sees:

  00:06.0 VGA compatible controller: NVIDIA Corporation GK104GL [GRID K2] (rev a1)

  00:07.0 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller (rev a1)

Not saying it isn't instability causing the problem, but I guess I wonder why some linux systems see it correctly, especailly Dom0 vs DomU, both Debian so why a different name?

---

Anyways, 13.10 had a whole new set of problems, newer kernel so I couldn't build nvidia headers, and I tried the packages and they seemed to load, but no video. ÂI am actually assuming that the problem is the inability to supply 'gfx_passthru=1' on my system, because without it I believe it is using the emulated VGA device by default, which might be the problem. ÂI have only the most basic understanding of video in linux so troubleshooting it is beyond me.

I will try 12.04, but probably not until next weekend.

Thanks for lending me a hand.

Â

On 10/27/2013 05:50 PM, Casey DeLorme wrote:

I think I just found out the reason.

00:06.0 VGA compatible controller: NVIDIA Corporation Device 11af (rev a1)
00:07.0 Audio device: NVIDIA Corporation GK104 HDMI Audio Controller
(rev a1)

I was reading this as GK104 for the video, but apparently the audio
component has the right model, and the video component is something
totally different. ÂNot sure if this is due to the modifications or a
glitch with passthrough, because the host machine definitely sees it as
a GK104.


On Sun, Oct 27, 2013 at 1:39 PM, Casey DeLorme <cdelorme@xxxxxxxxx

<mailto:cdelorme@xxxxxxxxx>> wrote:

    I installed Ubuntu 12.04 yesterday and Linux mint 15 a couple
    weeks ago using my card hard-moded to GRID K2 and it works
    perfectly with NVIDIA drivers.

  I was trying with Debian, which Ubuntu stems from (and mint too). ÂI
  am going to try Ubuntu next.

    You have to

    - install Linux
    - black list nouveau ( info provided below)
    - install NVIDIA drivers and

    MY OWN SCRIPTS
    ================

    a) Content of my shell script to start domU could be found here
    http://pastebin.com/6DYec0jM

    You may have to update those lines

    ================================================================
    declare -r PCIdevices="0000:01:00.0 0000:01:00.1 0000:00:1a.0
    0000:00:1d.0";
    # The list of PCI devices which are to be re-enabled.
    declare -r EnableDevices="0000:01:00.0 0000:01:00.1";
    =================================================================

    I am not the original author of this script. You can find the
    original script at ftp://ftp.enjellic.com/pub/xen/run-passthrough.

    b) Content of my domU conf file is there
    http://pastebin.com/1ZsN0muJ


  No dice, I tried your config and if I add `gfx_passthru=1` my system
  never loads. ÂWhen I check the status with either VNC or SDL both
  sit at a black screen with "serial0 console".

    INSTALL A LINUX DOMU (HVM)
    ==========================
    Here is what I did for Ubuntu (may works for any Linux distro)

    1. ÂWhile installing set gfx_passthru=0. You need to install
    Ubuntu from another PC through usual VNC (xen)
    vnc hostname_of_your_dom0

    2. Once Ubuntu is installed you are asked to reboot. Click on
    button 'Restart'. There might be several glitches on the
    screen...Just press 'ENTER'...There might be a printed message
    asking to click on 'ENTER' but due to glitches on the screen it
    is a bit hard to guess that you are asked to press 'ENTER'. Just
    press 'ENTER'

    3. Once domU is restarted. Log in your domU using VNC from your
    other PC. Blacklist nouveau.

    sudo su
    echo "blacklist nouveau" >> /etc/modprobe.d/blacklist-nouveau.conf

    apt-get update
    apt-get install vim openssh-server

    vim /etc/default/grub

    Replace
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    by
    GRUB_CMDLINE_LINUX_DEFAULT="quiet nouveau.blacklist=1 splash"

    then

    update-initramfs -u

    reboot

    Once domU is rebooted
    log into your domU through ssh

    ssh IP_of_your_domU

    stop X
    service lightdm stop # Ubuntu 12.04
    service mdm stop # Linux mint 15

    download nvidia driver
    # 32 bit
    wget
    http://uk.download.nvidia.com/XFree86/Linux-x86/331.17/NVIDIA-Linux-x86-331.17.run
    # 64 bit
    wget
    http://uk.download.nvidia.com/XFree86/Linux-x86_64/331.17/NVIDIA-Linux-x86_64-331.17.run

    Install it

    chmod +x NVIDIA????.run
    ./NVIDIA????.run

    Once done, power off the domU

    shutdown

    Log into your dom0, set gfx_passthru=1

    restart your domU.

    It works for NVIDIA drivers serie 319.XX

  I tried following these steps with my system and ended on the same
  problem. ÂX doesn't load, xrandr "can't open display", and nothing
  shows up on screen.

  ---

  I usually stick to a minimalist gnome3 install, since I don't need
  all the software the default package comes with. ÂHowever, I decided
  to try installing the whole set during a fresh system installation.

  Post-install (nouveau) I was greeted by a functioning gdm3 and was
  able to login, but it went to fallback mode since nouveau doesn't
  support 3D Accel that Gnome3 depends on.

  I proceeded to follow your instructions (minux the gfx_passthru flag
  which is preventing any booting from happening), and I get no video
  again.

  I can access with ssh. ÂI think this means it's loaded:

    Âroot@debian:~# lsmod | grep nv
    Ânvidia        9401892 Â0
    Âi2c_core        23876 Â3 i2c_piix4,videodev,nvidia

  I think this also means the card is "supposed" to be using it:

    Âroot@debian:~# lspci -k
    Â...
    Â00:06.0 VGA compatible controller: NVIDIA Corporation Device
  11af (rev a1)
      ÂSubsystem: Micro-Star International Co., Ltd. Device 2840
      ÂKernel driver in use: nvidia
    Â00:07.0 Audio device: NVIDIA Corporation GK104 HDMI Audio
  Controller (rev a1)
      ÂSubsystem: Micro-Star International Co., Ltd. Device 2840
      ÂKernel driver in use: snd_hda_intel

  I still get "Can't open display":

    Âroot@debian:~# xrandr
    ÂCan't open display

  My system generates six Xorg log files numbered Xorg.#.log starting
  at 0. ÂI have attached the first (they appear to have the same
  contents?).

  ---

  I am going to try an Ubuntu install next and see if I get any
  further. ÂHowever, if there are any ideas as to what went wrong I'd
  love to get debian working.

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