From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: [PATCH] fbdev: workaround for broken X servers Date: Fri, 5 Nov 2004 21:15:07 +0800 Message-ID: <200411052115.07646.adaplas@hotpop.com> References: <1099448020.900.25.camel@gaston> <200411052055.17316.adaplas@hotpop.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CQ3w6-0001qW-Vw for linux-fbdev-devel@lists.sourceforge.net; Fri, 05 Nov 2004 05:15:26 -0800 Received: from smtp-out.hotpop.com ([38.113.3.61]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1CQ3w5-0002rC-8d for linux-fbdev-devel@lists.sourceforge.net; Fri, 05 Nov 2004 05:15:26 -0800 Received: from hotpop.com (kubrick.hotpop.com [38.113.3.103]) by smtp-out.hotpop.com (Postfix) with SMTP id 2A56D98933B for ; Fri, 5 Nov 2004 13:15:15 +0000 (UTC) In-Reply-To: Content-Disposition: inline Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: Geert Uytterhoeven Cc: Linux Fbdev development list , Benjamin Herrenschmidt On Friday 05 November 2004 20:58, Geert Uytterhoeven wrote: > On Fri, 5 Nov 2004, Antonino A. Daplas wrote: > > On Friday 05 November 2004 20:15, Geert Uytterhoeven wrote: > > > On Fri, 5 Nov 2004, Benjamin Herrenschmidt wrote: > > > > > But every existing application that uses (shiver) the kernel > > > > > headers will break after this change... > > > > > > > > Geert, can you explain the whole story please ? > > > > > > The story about the +1 or the story about the breakage? > > > > > > The Story About The +1 > > > ---------------------- > > > Since the VESA levels do not provide a way to blank (`make it black') > > > the screen, the +1 is introduced. Hence 0 means unblank, 1 means black > > > screen, 2 means lowest power save level, and so on... > > > > And make it black is usually done in software (by memsetting the screen > > with the black color). > > Or by setting all color palette registers to black, if available, since > it's cheaper... > Ok. So, if pseudocolor/directcolor, set palette to all black, otherwise memset the screen. Tony ------------------------------------------------------- This SF.Net email is sponsored by: Sybase ASE Linux Express Edition - download now for FREE LinuxWorld Reader's Choice Award Winner for best database on Linux. http://ads.osdn.com/?ad_id=5588&alloc_id=12065&op=click