Re: matroxfb-fix-dvi-setup-to-be-more-compatible.patch introduces jitter

["Paul A. Clarke" <pc@us.ibm.com>]

I've been looking deeper into this problem, which was reportedly introduced by 
my patch a while ago, in Linux kernel 2.6.17.  I don't doubt the reports, but 
I'd like to replicate the problem as seen on the x86 boxes as reported in kernel 
bug 6720 and a few others directly to me, so I can verify a fix (if/when I can 
create one).

So, I installed SLES 10 on an old x86 box, with a PCI G450 (actually an IBM 
GXT135P).  I verified that my patch is _not_ included in that kernel 
(2.6.16.21).  However, I see jittery DVI-D output at all times.  I've tried 
640x480@60Hz, 1280x1024@60Hz, different "vesa" mode parameters (0x11b, 0x1bb), 
XServer "-fbbpp 32".  I usually end up losing sync with the monitor after a few 
minutes.

I don't have much experience with the G450 on x86, but I'm quite surprised.  Has 
anyone else observed this?
-- 
Regards,
Paul Clarke

-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642