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Re: Unsupported X Windows visual???
- Subject: Re: Unsupported X Windows visual???
- From: dirk(at)uwast.astro.wisc.edu (Dirk Fabian)
- Date: 25 Aug 1999 00:24:40 GMT
- Newsgroups: comp.lang.idl-pvwave
- Organization: University of Wisconsin - Astronomy Department
- References: <email@example.com> <37C184E0.F1B00A6F@ssec.wisc.edu>
- Xref: news.doit.wisc.edu comp.lang.idl-pvwave:16297
In article <37C184E0.F1B00A6F@ssec.wisc.edu>,
Liam Gumley <Liam.Gumley@ssec.wisc.edu> wrote:
>Todd David Halter wrote:
>> I am running IDL 5.2.1 on a RedHat Linux 6.0 i86 machine with 24bpp. When I do a device,decompose=0 I get the following error:
>> Unsupported X Windows visual (class: PseudoColor, depth: 8).
>> Substituting default (class: TrueColor, Depth: 24).
>> Any ideas on how I can get it to do depth 8 and not depth 24.
>While most name-brand Unix consoles (SGI, Sun, IBM etc.) support IDL
>8-bit PseudoColor while running a 24-bit desktop, Linux does not. At
>least most of the common Linux Xserver packages don't support it (e.g.
>XFree86), although AccleratedX might.
>If you *really* want to run IDL in 8-bit PseudoColor mode, you'll need
>to restart your Xserver e.g.
>startx -- -bpp 8
Not necessarily. RedHat comes with a little program called Xwrapper that
starts a new X session under the old.
You can be running in 24bpp in one session and then run
Xwrapper :1 -bpp 8 -query localhost
to start a new session in 8bpp. Use Cntrl-Alt-F7 and Cntrl-Alt-F8 to
switch between the two sessions. This prevents any mucking around with
config files and a bit more productivity since you don't have to think "am
i going to need IDL today" before you log in.