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Re: 16-bit color [message #27928 is a reply to message #13547]

Wed, 14 November 2001 02:57

Nigel Wade
Messages: 286
Registered: March 1998

Senior Member

James Kuyper wrote:

> Rick Towler wrote:
>>
>> You should be able to do this easily....
>>
>> If you are content with booting to the terminal and launching X manually
>> you
>> can specify what your desktop bit depth is. It has been a while since a
>> linux box sat on my desk (ahhh, those were the days....) but last time I
>> knew "startx -- -bpp 16" would get your 16bpp and as you can guess
>> "startx -- -bpp 24" would get you 24. If you are logged in and you need
>> to
>
> On my home machine, "startx -- -depth 24" is the appropriate command.
> The man page identifies "-bpp" as obsolete.
>
>> change it, you would have to quit your desktop manager, then restart X at
>> the appropriate bit depth. If your admin doesn't know how to change this
>> boot behavior, let me know. I may be able to dredge the name of the file
>> where you change the "boot to run level" setting out of my feeble brain.
>
> I've asked about this, but the sysadmins are unwilling to allow manual
> launching of X.
>

It's pretty hard to prevent.

Linux supports multiple displays on the same monitor in the same way that
it supports multiple consoles by using the virtual consoles.

You can start a second X server, running on display :1. You switch between
:0 and :1 with ctrl-alt-F7 and ctrl-alt-F8 (the second display uses the
next available virtual console by default). I'm not sure if you can have
more as I've only ever used :0 for 24bit and :1 for 8bit.

If does require that an XF86Config file is set up to handle multiple depths.

Unfortunately I've just upgraded to RedHat 7.2 and the XF86Config file I
had for multiple depths no longer works. I'll need to fiddle for a while to
get my IDL 8 bit display back again :-(.

--
-----------------------------------------------------------
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523568, Fax : +44 (0)116 2523555

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[Message index]

		16-bit colors in Linux (Re: 24 bit colors in IDL) By: G. Hugh SONG on Thu, 19 November 1998 00:00
		Re: 16-bit colors in Linux (Re: 24 bit colors in IDL) By: davidf on Wed, 18 November 1998 00:00
		Re: 16-bit colors in Linux By: mallors on Fri, 20 November 1998 00:00
		Re: 16-bit color By: Nigel Wade on Wed, 14 November 2001 02:57
		Re: 16-bit color By: James Kuyper on Wed, 14 November 2001 09:09
		Re: 16-bit color By: Nigel Wade on Thu, 15 November 2001 06:10
		Re: 16-bit color By: James Kuyper on Tue, 13 November 2001 12:55
		Re: 16-bit color By: Paul van Delst on Tue, 13 November 2001 10:22
		Re: 16-bit color By: Rick Towler on Tue, 13 November 2001 09:30
		Re: 16-bit color By: Pavel A. Romashkin on Tue, 13 November 2001 08:51
		Re: 16-bit color By: James Kuyper on Tue, 13 November 2001 07:49
		Re: 16-bit color By: David Fanning on Mon, 12 November 2001 14:03
		Re: 16-bit color By: Logan Lindquist on Thu, 15 November 2001 05:18
		Re: 16-bit color By: Paul van Delst on Thu, 15 November 2001 06:57
		Re: 16-bit color By: Nigel Wade on Thu, 15 November 2001 06:33
		Re: 16-bit color By: James Kuyper on Mon, 12 November 2001 13:33
		Re: 16-bit color By: Rick Towler on Mon, 12 November 2001 11:36

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