Date: Mon, 8 Sep 2014 04:43:55 -0700 From: Mark Millard <markmi@dsl-only.net> To: freebsd-ppc@freebsd.org Subject: Xorg/xfce4 vs. NVIDIA GeForce4 Ti 4600 on PowerMac G4: an odd display problem Message-ID: <2150A9D2-7876-4731-B0D1-441E20711441@dsl-only.net>
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[This message gives what was a side note in another message its own = message.] NVIDIA GeForce4 Ti 4600 when used at 1680x1050 (at least on an ADC = display from a G4 PowerMac): What should be the last 8 pixels or so on the right are instead near the = left hand side of the display, about 8 pixels from the left side in = fact. (This had been observed before the fix after a ports update but = with the hang/quit status I did not want to assume much about the = incomplete display updates at the time.) In total all the pixels are probably there. There is just a band of = pixels that is way out of place. (So all the pixels after them are then = shifted from where they should be by the width of that band.) Also the oddly placed, about 8 pixel wide band appears to be shifted = down one pixel from what would be expected. (Easily visible at the edge = of the menu bar across the top.) At 1400x1050 there are no such problem bands. Nor probably at 1280x1024. = (But 1280x1024 is not a nice display in many other ways. I did not look = carefully at 1280x1024.) The Xorg.0.log's do show an alternate Modeline for 1680x1050: [ 73.585] (**) NV(0): *Driver mode "1680x1050": 117.1 MHz, 63.7 kHz, = 59.9 Hz [ 73.585] (II) NV(0): Modeline "1680x1050"x59.9 117.13 1680 1744 = 1776 1840 1050 1053 1056 1062 +hsync +vsync (63.7 kHz ezP) [ 73.585] (**) NV(0): *Driver mode "1680x1050": 119.0 MHz, 64.7 kHz, = 59.9 Hz [ 73.585] (II) NV(0): Modeline "1680x1050"x59.9 119.00 1680 1728 = 1760 1840 1050 1053 1059 1080 +hsync -vsync (64.7 kHz ez) [ 73.585] (**) NV(0): *Default mode "1400x1050": 122.0 MHz, 64.9 kHz, = 60.0 Hz [ 73.585] (II) NV(0): Modeline "1400x1050"x60.0 122.00 1400 1488 = 1640 1880 1050 1052 1064 1082 +hsync +vsync (64.9 kHz zd) [ 73.585] (**) NV(0): *Default mode "1280x1024": 108.0 MHz, 64.0 kHz, = 60.0 Hz [ 73.585] (II) NV(0): Modeline "1280x1024"x60.0 108.00 1280 1328 = 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz zd) The other NVIDIA cards and the Radeon's that I tried in various G4 and = G5 PowerMac's do not show this display problem at the pixel counts that = they allow. The display works normally under Mac OS X 10.4 and 10.5. Context: FreeBSD FBSDG4S0 10.1-PRERELEASE FreeBSD 10.1-PRERELEASE #0 r271215: Sat = Sep 6 23:56:15 PDT 2014 root at = FBSDG4S0:/usr/obj/usr/src/sys/GENERIC powerpc portsnap was used and all ports were rebuilt from scratch, including = Xorg and xfce4. =3D=3D=3D Mark Millard markmi@dsl-only.net
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