Date: Tue, 22 Apr 2003 17:55:54 +0200 From: Christoph Kukulies <kuku@physik.rwth-aachen.de> To: hackers@freebsd.org Subject: DE203 (le0) - strange bus crosstalk? Message-ID: <200304221555.h3MFtsJ11124@accms33.physik.rwth-aachen.de>
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I have a DEC 203 lance (ISA) card in a 5.0R server and I recently received a fix from the driver author that enabled the driver again under 5.0. I'm now observing a very strange behaviour under X11 that went away immediately after I took out the card of the system. With the card in place and a serial mouse at /dev/ttyd0 or /dev/cuaa0 moving the mouse caused pixels arbitrarily being set on the screen. Moreover scrolling a window in the webbroswer caused the browser contents foobared (f*cked up beyond any recognizability). Like some screensaver does when it makes the screen look paralyzed. I first swapped the Graphics card, an ELSA Syngery 8, against an ELSA Winner 1000/T2D (that is a S3Trio64DX/V2). WIth that latter card I had terrible trouble with XFree86-4.2.1 under 5.0R. I only got two modes from XFree86 -configure which were 640x480 and 320x240. When I moved the mouse with that graphics card in place it resulted in flickering of the X screen from dark to normal with every other mouse movement. I then removed a 3COM 3C905 to no avail until I found that the DE-203 was the culprit. Question is: Is it the ISA memory of the card (d8000-dffff ?) that caused the trouble or is it something else (I/O, irq)? Anyone seen this before? -- Chris Christoph P. U. Kukulies kukulies@rwth-aachen.de
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