Bug 32494 - [NV46] GPU lockup, switching to software fbcon at startup
Summary: [NV46] GPU lockup, switching to software fbcon at startup
Status: RESOLVED DUPLICATE of bug 39988
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium critical
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-12-18 05:55 UTC by Patrice Mandin
Modified: 2011-12-06 11:56 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
kernel log (41.72 KB, text/plain)
2010-12-18 05:55 UTC, Patrice Mandin 		no flags Details
lockup nv46 (119.46 KB, text/plain)
2010-12-27 07:27 UTC, Francesco Marella 		no flags Details
Kernel log, from drm-nouveau-staging branch (44.94 KB, text/plain)
2011-01-14 04:45 UTC, Patrice Mandin 		no flags Details
Kernel log (21.32 KB, text/plain)
2011-04-08 05:29 UTC, Alexander Koryushkin 		no flags Details
2.6.39 kernel log on nv15 (21.80 KB, text/plain)
2011-05-25 12:59 UTC, Patrice Mandin 		no flags Details
View All

Description Patrice Mandin 2010-12-18 05:55:15 UTC 
Created attachment 41232 [details]
kernel log

Having switched to a 7300 GS card to replace my NV30, it was a bit unpleasant to see the NV46 not working with nouveau.

"GPU lockup - switching to software fbcon" happens at startup time, long before X is started.
Comment 1 Patrice Mandin 2010-12-18 12:03:32 UTC 
It works with "nouveau.noaccel=1" as kernel parameter
Comment 2 Patrice Mandin 2010-12-20 12:03:59 UTC 
Uploaded mmio trace to mmio.dumps@gmail.com account, of loading the blob and then starting X.
Comment 3 Francesco Marella 2010-12-27 07:27:01 UTC 
Created attachment 41474 [details]
lockup nv46
Comment 4 Francesco Marella 2010-12-27 07:28:29 UTC 
Same here. I see the following message in kernel log:

[drm] nouveau 0000:01:00.0: PFIFO_DMA_PUSHER - Ch 31 Get 0x19851600 Put 0x0cc4a444 State 0xd0840105 Push 0x00000000
[drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31

-- fm (fmarl on irc)
Comment 5 Patrice Mandin 2010-12-27 10:04:18 UTC 
There is another bug that may look like yours:
https://bugs.freedesktop.org/show_bug.cgi?id=23445

I opened this one because I thought it was different enough, but they may have the same cause.
Comment 6 Patrice Mandin 2011-01-14 04:45:25 UTC 
Created attachment 42021 [details]
Kernel log, from drm-nouveau-staging branch

With git repo from drm-nouveau-staging branch, I now get PFIFO_CACHE_ERROR which was not the case with master.
Comment 7 Alexander Koryushkin 2011-04-08 05:29:33 UTC 
Created attachment 45417 [details]
Kernel log

0000:00:10.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 440 Go 64M] (rev a3)
Comment 8 EoD 2011-04-24 11:58:26 UTC 
This sounds very much like Bug 35374 . Can you try it with the current 2.6.39-rc4 kernel?
Comment 9 Patrice Mandin 2011-05-25 12:59:42 UTC 
Created attachment 47161 [details]
2.6.39 kernel log on nv15

Just tested 2.6.39 (official, linus release) on my old box that has an nv15. It also triggers some PFIFO_DMA_PUSHER errors.
Comment 10 Patrice Mandin 2011-07-30 02:11:57 UTC 
Tested again my NV46 with current nouveau git (3.0.0-rc6), and still get 'GPU lockup, switching to software fbcon at startup'. The same thing happens with my NVA5.

With both cards, I have some crash when X is started, and garbage is displayed on screen. I'm starting to think my problems are not related to the cards per se, but maybe by wrong/faulty PCI-E management, as my motherboard has both an AGP and PCI-E connector.

I'll try to grab some kernel log through serial port.
Comment 11 Patrice Mandin 2011-12-06 11:56:01 UTC 

*** This bug has been marked as a duplicate of bug 39988 ***

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