Messages in this thread | | | Date | Mon, 3 Sep 2001 00:25:18 -0400 | From | Benjamin Gilbert <> | Subject | matroxfb problems with dualhead G400 |
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I've been trying to set up dualhead text console with matroxfb and a 16MB G400, with mixed success. What I think I'm seeing is that the scrollback from the primary head, when it gets long enough (i.e., cat /boot/System.map), intrudes on the secondary head. If the secondary head is set to the same resolution and bit depth as the primary, I can (sometimes) actually see the scrollback text go by on the secondary. The rest of the time, I just get garbage on the secondary. Scrolling text on the second head, OTOH, does not affect the primary head. Occasionally, scrolling text on the primary head will cause a kernel oops, although this isn't consistent; it happens less than 25% of the time.
I've tried various combinations of video resolutions and matroxfb boot-time options, but haven't really determined anything conclusive. The problem lasts from boot until the first time that the fbdev resolution is changed on the primary monitor; then the problem goes away. This seems to be true regardless of the initial resolution of the primary monitor. Setting "video=matroxfb:nopan" makes the problem rarer, but it still seems to pop up occasionally -- I oopsed once while testing this.
All of this is before starting XFree86, so X isn't a factor here.
Kernel is vanilla 2.4.9. Let me know what other information you need from me.
Thanks in advance --Benjamin Gilbert - 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/
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