Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267647AbTGON2u (ORCPT ); Tue, 15 Jul 2003 09:28:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267685AbTGON2u (ORCPT ); Tue, 15 Jul 2003 09:28:50 -0400 Received: from griffon.mipsys.com ([217.167.51.129]:8404 "EHLO gaston") by vger.kernel.org with ESMTP id S267647AbTGON2t (ORCPT ); Tue, 15 Jul 2003 09:28:49 -0400 Subject: Re: radeonfb patch for 2.4.22... From: Benjamin Herrenschmidt To: Peter Osterlund Cc: Marcelo Tosatti , ajoshi@kernel.crashing.org, lkml In-Reply-To: References: <1058255052.620.2.camel@gaston> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1058276604.620.53.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.0 Date: 15 Jul 2003 15:43:25 +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2052 Lines: 41 > > I have a small problem with radeonfb in 2.4.22-pre5 (+manually created > radeonfb.h file). During boot, when the console is switched over to > the frame buffer device, the screen becomes corrupted. Mostly by white > squares in a grid pattern and some squares with other colors. Between > the squares, normal characters can be seen, but each character is > duplicated. Here is a picture: (not very sharp unfortunately) > > http://w1.894.telia.com/~u89404340/radeonfb.jpg > > Text added after the switch is not corrupted, so eventually the > corruption is scrolled off the screen and after that the framebuffer > appears to be working correctly. It's a known artifact caused by my latest stuffs, mostly because I setup the display earlier than expected by the fbcon core, at which point the console buffer contains junk. I'm working on a fix though I can't reproduce on pmac. > 2.4.22-pre3 does not have this problem. I haven't found a patch for > the vanilla 0.1.8 version, so I don't know if that version also has > this problem. I think someone has reported a similar problem in 2.5.x, > but I don't remember the details. > > Here are some messages from the kernel log: > > Jul 14 23:08:44 best kernel: radeonfb: ref_clk=2700, ref_div=12, xclk=18300 from BIOS > Jul 14 23:08:44 best kernel: radeonfb: panel ID string: Samsung LTN150P1-L02 > Jul 14 23:08:44 best kernel: radeonfb: detected LCD panel size from BIOS: 1400x1050 > Jul 14 23:08:44 best kernel: Console: switching to colour frame buffer device 175x65 > Jul 14 23:08:44 best kernel: radeonfb: ATI Radeon M7 LW DDR SGRAM 64 MB > Jul 14 23:08:44 best kernel: radeonfb: DVI port LCD monitor connected > Jul 14 23:08:44 best kernel: radeonfb: CRT port no monitor connected -- Benjamin Herrenschmidt - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/