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Re: Graphics performance under linux

To: Hashem Masoud <hashemmasoud@yahoo.com>
Subject: Re: Graphics performance under linux
From: Ralph Corderoy <ralph@inputplus.demon.co.uk>
Date: Wed, 16 May 2001 16:49:58 +0100
cc: kernelnewbies@nl.linux.org
In-Reply-To: Message from Hashem Masoud <hashemmasoud@yahoo.com> of "Wed, 16 May 2001 07:12:27 PDT." <20010516141227.50193.qmail@web9907.mail.yahoo.com>
Sender: owner-kernelnewbies@nl.linux.org


Hi,

> Just another question..
> 
> If the X server runs in user mode, how is it able to change the video
> mode from text to bitmap mode, although it runs in user mode and has
> no enough privilages to do so?

/usr/bin/X11/X is a symlink to Xwrapper which is set-uid root.  That
probably gives sufficient permission.

You may find using strace to see what it does useful.  Alternatively,
UTSL.


Ralph.

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References:
- Re: Graphics performance under linux
  - From: Hashem Masoud <hashemmasoud@yahoo.com>

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