[NV34M] Xorg crashed with SIGSEGV in memset() using nouveau driver on powerpc

[Matteo Settenvini]

I just tried running the nouveau drivers on my PPC, since there's no 2D acceleration or proprietary drivers for this platform as far as I know. However, X.org does fail even to start with a SIGSEGV.

ProblemType: Crash
Architecture: powerpc
Date: Sat Jul 11 22:59:53 2009
DistroRelease: Ubuntu 9.10
ExecutablePath: /usr/bin/Xorg
Package: xserver-xorg-core 2:1.6.1.901-2ubuntu2
ProcCmdLine: root=/dev/sda3 ro quiet video=vesafb:ywrap,1440x900-24 splash
ProcCmdline: /usr/bin/X :0 -br -verbose -auth /var/run/gdm/auth-for-gdm-nv4JKk/database -nolisten tcp
ProcCwd: /etc/X11
ProcEnviron:
 LANG=it_IT.UTF-8
 PATH=(custom, no user)
 LANGUAGE=it_IT:it:en_GB:en
ProcVersionSignature: Ubuntu 2.6.30-2.4-powerpc64-smp
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.5~rc4-1ubuntu3
 libdrm2 2.4.11-1ubuntu1
 xserver-xorg-video-intel N/A
 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu1
Signal: 11
SourcePackage: xorg-server
StacktraceTop:
 memset () from /lib/libc.so.6
 ?? () from /usr/lib/xorg/modules/drivers//nouveau_drv.so
 ?? () from /usr/lib/xorg/modules/drivers//nouveau_drv.so
 AddScreen (pfnInit=0xf7e65008, argc=<value optimized out>,
 InitOutput (pScreenInfo=<value optimized out>, argc=8,
Title: Xorg crashed with SIGSEGV in memset()
Uname: Linux 2.6.30-2-powerpc64-smp ppc64
UserGroups:

fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: ppc64kernel: 2.6.30-2-powerpc64-smp

[lspci]
0000:f0:10.0 VGA compatible controller [0300]: nVidia Corporation NV34M [GeForce FX Go5200] [10de:0329] (rev a1)
     Subsystem: nVidia Corporation Device [10de:0010]

[Matteo Settenvini (tchernobog)]

Package versions:

ii libdrm-nouveau1 2.4.11-1ubuntu1
ii nouveau-kernel-source 0.0.11+git20090515-0ubuntu1
ii xserver-xorg-video-nouveau 1:0.0.10~git+20090404+11be9a9-0ubuntu1

[Bryce Harrington (bryce)]

Hi Matteo,

We have an all new nouveau driver in Lucid. I really don't know whether or not it can be installed on PPC or if so, whether it should work. But since we've done so much work on this driver, I'm optimistic. Would you mind giving alpha-3 a spin on this hardware and see if this issue is resolved now?

[Matteo Settenvini (tchernobog)]

If I recall correctly, Saturday it wasn't installable because http://packages.ubuntu.com/lucid/linux-backports-modules-nouveau-lucid-generic on PPC wasn't available (which is a dep of xserver-xorg-video-nouveau).

Anyway, I'll give it a try as soon as I get back home (I'm away for this full week, until Friday evening), and then I'll report back here my results. Thanks!

[Bryce Harrington (bryce)]

Hi Matteo,

We've actually gone ahead and disabled nouveau for ppc, as it seems it would need a ppc variant of linux-modules-backports which isn't currently available. So hopefully with alpha-3 it should be loading -nv. I'd love to see nouveau working with ppc some day, but I doubt it's something we're going to worry about at this point so I'm going to close out the bug as wontfix.

[Matteo Settenvini (tchernobog)]

I can understand that. However, on Karmic the nouveau drivers were installable and working; I used them in place of the -nv ones for months and they did not crash. Moreover, I noticed a net improvement of the quality of the on-screen 2D rendering or, alas, gradients for example did not have that ugly alone that the -nv drivers produce.

So I can understand the wontfix, however keep in mind that there has been a stable period in karmic in which the powerpc nouveau drivers worked and worked very well.