Comment 7 for bug 564617

Created an attachment (id=35110)
Dmesg on ubuntu lucid beta 2 installed (does not work)

I can't start the ubuntu lucid beta 2 liveCD on a computer with a Nvidia GeForce 6200 (NV44A rev A1) : the screen stays blank after booting.
It works properly with a ubuntu lucid alpha 3 liveCD (which probably uses a previous version of nouveau) and ubuntu karmic liveCD (which uses nv driver)

I managed to install the beta 2 on this computer through the alternate CD : the behavior is the same when booting on the hard drive.
I installed all the updates (as of 16th april 2040) : same behavior

I experience the precise same behavior with Fedora live : Fedora 12 live boots correctly (but relies on "nv" driver), Fedora 13 beta live gives the same blank screen (and also uses "nouveau" driver).

I think this is a regression in the "nouveau" graphic driver : the version bundled with lucid alpha 3 works, the one with lucid beta 2 (or fedora 13 beta) does not.
Here is an excerpt of the dmesg on beta 2 :
  nouveau 0000:03:00.0: RAMHT space exhausted. ch=0
  nouveau 0000:03:00.0: Error referencing VRAM ctxdma: -12
  nouveau 0000:03:00.0: gpuobj -12

This error message does not appear when using lucid alpha 3.

I found that adding "nouveau.noaccel=1" as a boot parameter is a workaround, both on ubuntu lucid beta 2 and on fedora 13 beta

My motherboard is a Asus A7N8X-E deluxe, on which a GeForce 6200 video card (branded MSI) is in the AGP port.

You will find attached the dmesg of :
- ubuntu lucid beta 2 installed (does not work)
- ubuntu lucid alpha 3 liveCD (works)
- ubuntu lucid beta 2 installed, with nouveau.noaccel=1 (works)

lspci gives :
03:00.0 VGA compatible controller: nVidia Corporation NV44A [Geforce 6200] (rev a1)

I first opened this bug on ubuntu launchpad : https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/564617