[FreeNX-kNX] patch for windows-linux session resumption
Sunil
funtoos at yahoo.com
Sat Jul 30 14:41:43 UTC 2005
So, the damn hack worked. here is the patch if you are
also stuck with having to resume windows started
session on linux and find yourself not being able to.
please note that the hack just ignores bits_per_rgb
property of visuals when searching for the matching
visuals on the real display. It "may" not be the Right
Thing to do.
Thanks,
Sunil
--- Sunil <funtoos at yahoo.com> wrote:
> I did some further research on this.
>
> there are two issues which stop windows session from
> resuming on linux and vice-versa:
>
> 1. the no. of visuals don't match and hence this
> piece
> of code returns FALSE:
>
> ./nx-X11/programs/Xserver/hw/nxagent/Display.c.orig:
> 1580
>
> if (i == nxagentNumVisuals)
> {
> nxagentVisuals = newVisuals;
>
> return TRUE;
> }
>
> free(newVisuals);
>
> return FALSE;
>
> This problem can be solved by always starting the
> sessions from windows and then resuming it from
> linux
> or winows because in that case the #visuals will be
> the lesser of the two (usually 4).
>
> 2. #bits in color spec don't match for any visual.
> There are 8 significant bits in color spec on linux
> xfree while only 6 for nxwin. The cygwin xfree has
> 8,
> I don't know why nxwin reports only 6, whether its
> not
> updated or whether its an inherant property of
> windows, I don't know. So, the matching algorithm in
> ./nx-X11/lib/X11/VisUtil.c: 125 returns no matching
> visual:
>
> if ((visual_info_mask &
> VisualBitsPerRGBMask) &&
> (vp->bits_per_rgb !=
> visual_info_template->bits_per_rgb)) continue;
>
> /* YEA!!! WE FOUND A GOOD ONE */
>
> This problem can't be solved without either changing
> nxwin or masking out the bits_per_rgb test by using
> this diff:
>
> $ diff Display.c.orig Display.c
> 1538c1538
> < unsigned long mask = VisualAllMask &
> ~VisualIDMask;
> ---
> > unsigned long mask = VisualAllMask &
> ~VisualIDMask
> & ~VisualBitsPerRGBMask;
>
> Is there anyone here who knows anything about nxwin
> and the magic number '6' bits?
>
> I will try the above and post back.
>
> Thanks,
> -Sunil
>
>
> --- Sunil <funtoos at yahoo.com> wrote:
>
> > Date: Thu, 28 Jul 2005 14:27:51 -0700 (PDT)
> > From: Sunil <funtoos at yahoo.com>
> > To: User Support for FreeNX Server and kNX Client
> > <freenx-knx at kde.org>
> > Subject: Re: [FreeNX-kNX] no connection with
> latest
> > windows client
> >
> > So, I took the bait and upgraded to 0.4.3. Things
> > are
> > much better. I can create sessions from windows as
> > well as linux. Resume works most(failed one out of
> 5
> > times) of the time from windows if the session was
> > created from windows. Resume also works from linux
> > if
> > the session was created from linux. My requirement
> > that I be able to resume sessions freely across
> > windows and linux doesn't work.
> >
> > The error message is: "Failed to restore all the
> > required visuals. Can't resume the NX session on
> the
> > display." This is the same message whether I try
> to
> > resume windows created session on linux or linux
> > created session on windows. Additional pain on
> > windows
> > is that nxwin just hangs after this message.
> >
> > I did a quick check on the xdpyinfo of both the
> > displays and found that session started from
> windows
> > had 4 visuals and each had 6 significant color
> bits,
> > while linux created sessions had 8 visuals and 8
> > significant color bits.
> >
> > I am attaching the diff of the two if somebody
> wants
> > to analyze why it couldn't restore all the
> visuals.
> >
> > I am back to square one with this.
> >
> > Thanks,
> > -Sunil
> >
> > --- Fabian Franz <FabianFranz at gmx.de> wrote:
> >
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > Am Mittwoch, 27. Juli 2005 20:59 schrieb Sunil:
> > > > Hi,
> > > >
> > > > I don't seem to be able to make a connection
> > from
> > > the
> > > > windows client. I downloaded the latest client
> > > from
> > > > nomachine for Windows. I upgraded the OSS
> > > components
> > > > on the server to latest stable release and
> > > upgraded
> > > > the freenx to 0.4.2. When I try to connect it
> > goes
> > > to
> > > > 'negotiating link parameters' and then it dies
> > > with
> > > > these details:
> > >
> > > If you want to use 1.5.0 as backend use
> > > freenx-0.4.3.tar.gz from
> > > http://debian.tu-bs.de/knoppix/nx/.
> > >
> > > cu
> > >
> > > Fabian
> > > -----BEGIN PGP SIGNATURE-----
> > > Version: GnuPG v1.2.4 (GNU/Linux)
> > >
> > >
> >
>
iD8DBQFC6LrLI0lSH7CXz7MRArrcAJ4+poZ35AY7Mr9UXV7VGo6ClZ55aQCeOAut
> > > 0K9J01lwMYEf3uI/OB94PQQ=
> > > =6SbJ
> > > -----END PGP SIGNATURE-----
> > >
> > > _______________________________________________
> > > FreeNX-kNX mailing list
> > > FreeNX-kNX at kde.org
> > > https://mail.kde.org/mailman/listinfo/freenx-knx
> > >
> >
> >
> >
> >
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>
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