Regression : no image when starting lucid beta 2, with Nvidia Geforce6200 NV44A. "Error referencing VRAM ctxdma: -12". Worked in alpha 3 and in karmic
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Nouveau Xorg driver |
Fix Released
|
Critical
|
|||
Fedora |
New
|
Undecided
|
Unassigned | ||
xserver-xorg-video-nouveau (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: xserver-
I can't start the 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 lucid alpha 3 liveCD, and with a karmic liveCD.
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.
description: | updated |
tags: | added: lucid |
tags: | added: karmic |
tags: | added: regression-release |
Changed in xserver-xorg-video-nouveau (Ubuntu): | |
status: | New → Confirmed |
Changed in nouveau: | |
importance: | Unknown → Critical |
status: | Unknown → Fix Released |
Changed in nouveau: | |
importance: | Critical → Unknown |
Changed in nouveau: | |
importance: | Unknown → Critical |
Maybe this is related : before these error lines appear the following lines in dmesg :
agpgart-nvidia 0000:00:00.0: AGP 3.0 bridge
agpgart: modprobe tried to set rate=x12. Setting to AGP3 x8 mode.
agpgart-nvidia 0000:00:00.0: putting AGP V3 device into 8x mode
nouveau 0000:03:00.0: putting AGP V3 device into 8x mode
They appear only in beta 2, not in alpha 3.
My video card is indeed plugged in a AGP port, that supports x8 mode. The motherboard is a Asus A7N8X-E deluxe and AGP mode x8 is enabled in the BIOS