On Thu, Mar 21, 2002 at 11:27:56AM +0100, Hans Ekbrand wrote: > On Thu, Mar 21, 2002 at 11:08:29AM +0100, Ragnar Wisl�ff wrote: > > Sitat Morten <[EMAIL PROTECTED]>: > > > > > ON the School where i am setting up LTSP right now i have a lot of > > > different > > > problems with the VGA/Screen. 75% of the schools computer has the > > > hardware > > > as described and all with the same error. > > > > > > Its old IBM computer (PC150) with "s3 Trio64 V+". I am using "IBM > > > 14x" > > > monitors. > > > > > > Describing the Problem: > > > The WindowManager is a litle slow to start. The screen is black for > > > 1min and > > > then i can log in (using KDE). The right side of the screen starts > > > to > > > flimmer (kind of flashing) everytime i make somthing like writing or > > > leading > > > a program. A god exapple is The Educational Game like "tuxmath" i > > > try to > > > start it and it starts to flimmer alot on the Right side of the > > > monutor and > > > loading the game extreamly slow. Then when it is ready, all movement > > > is like > > > in "Slow Motion" and still flimmer on the Rigth side of the screen. > > > ITs > > > starting aplications like Open ofice and Netscape fast, but still > > > flashing > > > on screen. > > > > > > What have i done: > > > I though that the Default VGA settings in dhcpd.conf is not working > > > for this > > > computer. I try to set XSERVER =auto and XSERVER=XVGA, I have > > tried > > You should use the XF86_S3 server. The general xserver for X 3.3.6 is > called XF86_SVGA, but it should not be used for S3 chips. > > If XF86_S3 is not installed, install it. (You can just download it > from www.xfree86.org and copy it to /opt/ltsp/i386/usr/X11R6/bin/)
I must correct myself here. According to http://www.xfree86.org/4.2.0/Status28.html#28, S3 Trio64V+ *is* supported by "XFree86" (the X server in 4.2) (Even the XF86_SVGA server had support for various S3 cards, but not at stable as the XF86_S3 server (it was described as "alpha" quality in the README.S3)). But ltsp uses 4.1 so there might be something to gain by upgrading to X 4.2, since: 2. Summary of new features in 4.2.0. 2.1 Video Driver Enhancements o An s3 driver is added, which provides support for many of the older non-ViRGE and non-Savage S3 chipsets. But upgrading LTSP from 4.1 to 4.2 is non-trivial (at least I couldn't do it within half an hour ;-). Any LTSP guru here to tell how to upgrade X? The symptoms described does sound as a problem with the X-server <-> graphic chip rather than graphic chip <-> monitor, don't you think? To locate the problem, try very conservative mode line setting, e.g. X_MOD_0 = 640x480 X_HORZSYNC = 29-33.5 X_VERTREFRESH = 55-70 If that makes any difference, the problem probably lies with the monitor, or put differently, you are pushing it too hard. If does not make any difference, then you will have to look into the X-server, (Try different X-servers, read the documentation about peculiarities with the S3 cards). Good Luck -- Hans Ekbrand
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