Re: System fails to boot on adding second DVB-T PCI card

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Hi,

Am Donnerstag, den 10.01.2008, 21:23 +0200 schrieb Axel Thimm:
> Hi,
> 
> On Thu, Jan 10, 2008 at 02:03:55AM +0100, hermann pitton wrote:
> > Am Donnerstag, den 10.01.2008, 01:13 +0200 schrieb Axel Thimm:
> > > On Wed, Jan 09, 2008 at 11:42:19PM +0100, hermann pitton wrote:
> > > > > > video_buf: exports duplicate symbol videobuf_mmap_mapper (owned by 
> > > > > > videobuf_core)
> > > > > > video_buf: exports duplicate symbol videobuf_mmap_mapper (owned by 
> > > > > > videobuf_core)
> > > > 
> > > > Guess this is the root of the problem. Axel's modules might fail to
> > > > eliminate it.
> > > > 
> > > > Mauro has converted the old single videobuf.ko to different types to be
> > > > more flexible. Looks like you have an upgrade to the new types without
> > > > that the old videobuf.ko is removed from your /lib/modules.../media
> > > > stuff. Try to remove/delete it manually and "depmod -a".
> > > 
> > > is there a way to somehow blacklist videobuf.ko w/o having to remove
> > > it? The reason is that packagewise this belongs to the kernel rpm
> > > which is managed by the upstream vendor (e.g. Red Hat, Fedora) and I
> > > wouldn't want to nuke it - it would return anyway with the next kernel
> > > update.
> > > 
> > > Instead maybe some dummy alias or some remapping could be made to
> > > effectively remove it from module-utils' radar w/o actually removing
> > > the file? That would be much cleaner from a packaging POV.
> > > 
> > > Thanks!
> > 
> > here it is de facto gone, if not anymore in the next kernel release.
> > 
> > What you do in between is up to you.
> > 
> > If you like to stay in sync as close as possible, of course v4l-dvb
> > counts and not the delayed kernel stuff.
> 
> Yes, I understand that - but I'm interested in providing recent
> v4l/dvb for users of for example 2.6.18 kernels as well, as found in
> RHEL5/CentOS5/SL5. This allows users or even OEMs to build multimedia
> systems on stable enterprise platforms.

Yes, accepted, but we also need some testers left ;)

> It all works quite well as there are mechanisms to override the
> kernel's modules - only when they are renamed like in this case one
> needs to take special care. That was what I was asking about. :)

Renaming to something out of radar is quite safe, preferably if unloaded
previously.

Cheers,
Hermann





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