[mythtv-users] Re: # apt-get install ivtv gives segmentation faults and failed reboot

[Jarod C. Wilson]

I'm going to break my own personal rules and top-post...

I've figured out at least part of the reason for the segfaults, but I'm 
still working on the fix. Basically, the rpms aren't creating the 
correct character device entries in /dev anymore. I'm on bare-metal 
re-install #2 today, trying to get the exact fix that'll work for all 
of y'all.

I've talked with Axel a bit about the changes, and basically, they are 
necessary to support versions of Red Hat/Fedora going forward, as there 
are some fairly big changes coming down the turnpike (like the 2.6 
kernel). Apparently, the 1.0-4363 driver is broken on many Fedora 
systems (though I ran it fine myself, using a kludge to get around a 
compiler warning), thus the reason for the newer nvidia driver rpm. 
Most reports I've seen indicate some of the TV-Out functionality (most 
notably overscan) is broken in the newer ones.

That said, I believe there IS a problem with the current rpms, because 
they *should* be creating the character devices (/dev/nvidia[0-7] and 
/dev/nvidiactl). I'll have an update later tonight, hopefully with an 
interim fix (using the rpms; you can always go with nVidia's own shell 
script).

I'll see what it takes to specifically grab the 1.0-4363 rpms instead 
of the newer ones also, for those who need overscan (and want to use 
"experimental A/V sync", which relies on the 4363 driver, IIRC).

--Jarod

On Sunday, Oct 26, 2003, at 23:27 US/Pacific, yok mo wrote:

>
>> You should check why those segfaults happen. Haven't
>> seen any such reports. Seems like a broken kde lib.
>
> I just did a fresh RH9 install, with NVidia 440MX graphics card and 
> PVR-250 capture card. I followed Jarod's excellent tutorial (thank you 
> very much!!!), including using apt and kernel update (thank you 
> Axel!!!).
>
> KDE was working fine (no seg faults when I tried to launch a program 
> such as kate). Once I did a:
> # apt-get install nvidia-graphics-kmdl-$KERNEL
> # apt-get install nvidia-graphics-glx
>
> I immediately had seg faults when I tried kate again. Also, when I 
> re-started X, I then got the "Could not start kdeinit". I could start 
> Gnome and failsafe sessions, although kate seg faulted there as well.  
> Once I rpm -e these two modules, KDE and kate worked great again. 
> During all these tests, I did not touch my XF86Config file.  (as a 
> side note, if I were to update my XF86Config file to the documented 
> changes, I could not get X to start. I had the same exact error 
> messages that Romel had listed below).
>
> I did notice (in my install as well as this thread) that the nvidia 
> driver version 1.0_4496 was being used. In Jarod's document, it states 
> to use version 1.0-4363 - Could this be one of the reasons why? It 
> appears that the apt-get is downloading the newer nvidia driver. 
> Perhaps I was suppose to specify the older version when I ran it?
>
> I went ahead and downloaded source from NVidia, and installed 
> v1.0-4363. Once I did this, I could then update my XF86Config file, 
> and everything is gravy. I'm off and running again, KDE is working 
> fine and I'm now capturing videos.
>
> I'm no Linux guy, so I could be out in left field. But I thought I'd 
> pass on my observations in hopes that they help / make sense to 
> someone =)
>
> Thanks everyone for the great work, this is an awesome project!!!
> -Curtis
>
>>
>> I'm not familiar enough with Linux to check segfaults.
>> One work around is to launch the app prior to loading
>> nvidia-graphics-glx.
>>
>>> 8a. "Parse error on line 9 of Section ServerLayout
>>
>> in
>>
>>> file /etc/X11/XF86config.
>>
>>
>>> Add
>>> ModulePath
>>> "/usr/X11R6/lib/modules/extensions/nvidia"
>>> ModulePath "/usr/X11R6/lib/modules/extensions"
>>> ModulePath "/usr/X11R6/lib/modules"
>>> to /etc/X11/XF86Config in ServerLayout and
>>> remove/comment the dri module.
>>
>>
>> Sorry that is an error, these lines belong to Section
>> "Files", not "ServerLayout".
>>
>> I made the changes. X still doesn't work, but at least
>> your suggested changes fix the Parse error. This is
>> the new error that I'm getting and suspect have been
>> getting these past few weeks when attempting to
>> install the nvidia driver:
>>
>> NV: Could not open control device /dev/nvidiactl (no
>> such file or direct
>> (EE) NVIDIA(0): Failed to initialize the NVIDIA kernel
>> (EE) NVIDIA(0): *** Aborting *** module!
>> (EE) NVIDIA(0): Screen(s) found, but none have a
>> usable config.
>>
>> I login in failsafe mode. Use my backup copy of
>> XF86Config, but once again when I login and prior to
>> KDE loading, I get the "Could not start kdeinit. Check
>> yur installation" error. I can only resolve it by
>> running rpm -e nvidia-graphics-glx in failsafe mode.
>>
>> Very strange.
>>
>> Also, are the apt-get packages updated to .12? I would
>> like to move-on for now and complete my myth install
>> but as of this morning, I'm only finding .11 specific
>> directories when I ran the apt-get mythsuite.
>>
>> Thanks! So very close.
>
-- 
Jarod C. Wilson, RHCE

Got a question? Read this first...
     http://catb.org/~esr/faqs/smart-questions.html
MythTV, Red Hat Linux 9 & ATrpms documentation:
     http://pvrhw.goldfish.org/tiki-page.php?pageName=rh9pvr250
MythTV Searchable Mailing List Archive
     http://www.gossamer-threads.com/archive/MythTV_C2/

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