NetBSD Problem Report #47622
From martin@aprisoft.de Tue Mar 5 09:26:15 2013
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Date: Tue, 5 Mar 2013 10:26:06 +0100 (CET)
From: martin@NetBSD.org
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To: gnats-bugs@gnats.NetBSD.org
Subject: nv driver hangs with XAA
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>Number: 47622
>Category: xsrc
>Synopsis: nv driver hangs with XAA
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: xsrc-manager
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Mar 05 09:30:00 +0000 2013
>Originator: Martin Husemann
>Release: NetBSD 6.x
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: (not this machine, using amd64 GENERIC from the tip of netbsd-6)
Architecture: x86_64
Machine: amd64
>Description:
Using in-tree Xorg with this graphics card:
vga0 at pci1 dev 0 function 0: vendor 0x10de product 0x0110 (rev. 0xb2)
or as Xorg calls it:
[ 517.541] (--) NV(0): Chipset: "GeForce2 MX/MX 400"
leads to quick lockups in the X server.
It hangs in external/mit/xf86-video-nv/dist/src/nv_xaa.c line 287:
void NVSync(ScrnInfoPtr pScrn)
{
NVPtr pNv = NVPTR(pScrn);
if(pNv->DMAKickoffCallback)
(*pNv->DMAKickoffCallback)(pScrn);
while(READ_GET(pNv) != pNv->dmaPut); <<--- 287
while(pNv->PGRAPH[0x0700/4]);
}
and the loop never terminates.
>How-To-Repeat:
Just use X a bit, like fire up a few xterms.
>Fix:
Workaround is to disable all acceleration in /etx/xorg.conf. This works
for me:
Section "Device"
### Available Driver options are:-
### Values: : integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
### <percent>: "<f>%"
### [arg]: arg optional
#Option "SWcursor" # [<bool>]
#Option "HWcursor" # [<bool>]
Option "NoAccel" "yes" # [<bool>]
#Option "ShadowFB" # [<bool>]
#Option "UseFBDev" # [<bool>]
#Option "Rotate" # [<str>]
#Option "VideoKey" #
#Option "FlatPanel" # [<bool>]
#Option "FPDither" # [<bool>]
#Option "CrtcNumber" #
#Option "FPScale" # [<bool>]
#Option "FPTweak" #
#Option "DualHead" # [<bool>]
Identifier "Card0"
Driver "nv"
# BusID "PCI:1:0:0"
EndSection
Side note: note the wrong bus ID generated by Xorg -configure
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
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