Bug#226296: xserver-xfree86: [savage] flickering screen, low resolution on thinkpad t23 w/1400x1050 panel

[Andrew Lusk <alusk@uiuc.edu>]

From: Branden Robinson <branden@debian.org>
Subject: Bug#226296: xserver-xfree86: [savage] flickering screen, low resolution on thinkpad t23 w/1400x1050 panel
Date: Fri, 20 Feb 2004 21:55:44 -0500

> On Fri, Jan 09, 2004 at 12:44:14PM -0600, Andrew Lusk wrote:
> > From: Branden Robinson <branden@debian.org>
> > > > With the new 4.3.0-0pre1v5 packages, I can't start X at any resolution
> > > > higher than 640x480.  Also, when the server does start, the screen
> > > > flickers a lot, headache-inducingly badly, also mouse movement is jerky
> > > > and slow.  I'm running 2.6.0 on a Thinkpad T23 laptop, model 2647-5RU
> > > > (with the 1400x1050 panel).
> > > > 
> > > > Let me know if I can provide any more information.
> > > 
> > > Is this a regression from a previous version of the XFree86 Debian
> > > packages?
> > 
> > Yes, from the latest 4.2.x anyways, which works well.
> 
> A well-meaning but under-informed person sent the following message to
> 226296-quiet last month, so neither of us saw it:
> 
>   I found the thread for bug#226296 reguarding XFree86 with the savage
>   driver on a 2.6 kernel.
> 
>   I'm in the process of converting my t23 from a 2.4 kernel to a 2.6
>   kernel (I run RedHat 9 ....  sorry ;-) but I'm having the same issue.
>   When running under 2.4 everything works fine, when running the 2.6
>   kernel I experience the issue described in the thread.  This makes me
>   think it is an issue with the 2.6 kernel, any insight?
> 
>   I'm running the lates redhat 9 XFree86 (4.3.0-2.90.43).
> 
> Do you think you could try to reproduce this bug while running a 2.4
> kernel?

An interesting thing happened -

2.6.1  - failure.
2.4.23 - failure, same problem.
2.4.25 - works fine.

I should note that the problem I have has changed slightly since the
prerelease 4.3.0 packages.  Now it flickers and displays no image, but
if I toggle to the external display and back, it works.  On 2.6.x and
2.4.23, the right-hand side of the image is distorted, but it does
work at 1400x1050 resolution.

--Andrew