[aklug] Re: Using X11

Is the issue with your xserver or your desktop?

On Apr 13, 2009, at 8:52 AM, "Thomison, Lee" <ThomisonL@muni.org> wrote:

> Agreed, X is a very powerful tool, with lots of built in
> usefulness. The p=
> referred way to attach (RWGBOI) is via X tunnels with SSH. Most
> current ap=
> plications can work remote X with this. It wasn't always so. Which
> brings=
> me to the point of my post here.
>
> In a word, um, help?
>
> We've got one of those apps. It's a solaris 2.5.1 based system from
> the 90=
> 's. The app is a heavily bastardized on-off control system. Also
> from the=
> 90's (actually, I think from the late 80's, but not sure about
> that). It =
> can do remote as Shane and others have described, but it's too old
> to under=
> stand and work with ssh X tunnels. =20
>
> Remote X is fine. It wants and expects to connect to mydesktop:
> 0.0. Fine =
> and good. I can shell into the remotehost (solaris 2.5.1), set the
> display=
> to mydesktop:0.0 (a centos5.3 box), and do all the usual xclock,
> emacs, ne=
> dit, whatever. All good. =20
>
> But, when I try to run the app, it starts, draws some nice boxes, I
> see stu=
> ff I should see, then get an error that says 'unable to allocate
> colors'. =
> =20
>
> I've poked and prodded at this for a couple of years now. It seems
> that th=
> e old app wants 256 colors, and gets cranky if mydesktop is
> different. Goo=
> gling yields the valuable information that (summarized) 'some old or
> poorly=
> behaved applications may expect 16 or 256 colors'. The usual
> suggestion o=
> n how to handle this is to not write the application to do that in
> the firs=
> t place. =20
>
> The phrase 'private colormap' comes up sometimes, but there's no
> real layma=
> n explanation of what to do with those or how to set them up.
> Closest I've=
> seen was a lot of C code, which starts to look like way more trouble
> than =
> I want to go to.
>
> So, to summarize, to all you really smart and experienced folk out
> there, i=
> s there an easy way to get past this 256 color allocation issue? Or
> is the=
> 'easy' way to wait until this system is junked and the new system is
> spec'=
> ed and installed?
>
> Thanks!
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Received on Mon Apr 13 09:10:38 2009