I just got a new monitor for my desktop system (the old one died after *many*
years of service). The new monitor is a high res 16:9 monitor, but the VESA video
driver insists on using 1024x768 (which was the resolution of the *old*
monitor). It does seem to detect higher, 16:9 resolutions but it is not using
them. I *think* I need to set some low-level video mode thing, but it has
been a long time since I have had to do that that I have totally forgotten how
to do it. And I have been unable to find it with a websearch either.
>From /var/log/Xorg.0.log:
(II) VESA(0): Printing DDC gathered Modelines:
(II) VESA(0): Modeline "1366x768"x0.0 85.50 1366 1436 1579 1792 768 771 774 798 +hsync +vsync (47.7 kHz)
(II) VESA(0): Modeline "1360x768"x0.0 85.50 1360 1424 1536 1792 768 771 777 795 +hsync +vsync (47.7 kHz)
(II) VESA(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz)
(II) VESA(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz)
(II) VESA(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz)
(II) VESA(0): Modeline "640x480"x0.0 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz)
(II) VESA(0): Modeline "640x480"x0.0 30.24 640 704 768 864 480 483 486 525 -hsync -vsync (35.0 kHz)
(II) VESA(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz)
(II) VESA(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz)
(II) VESA(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz)
(II) VESA(0): Modeline "1024x768"x0.0 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz)
(II) VESA(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz)
(II) VESA(0): Modeline "832x624"x0.0 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz)
(II) VESA(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz)
(II) VESA(0): Modeline "800x600"x0.0 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz)
(II) VESA(0): Modeline "1280x720"x60.0 74.48 1280 1336 1472 1664 720 721 724 746 -hsync +vsync (44.8 kHz)
(II) VESA(0): Searching for matching VESA mode(s):
Any of 1360x768, 1366x768, or 1280x720 would be fine.
Following this are a pile of blocks starting with 'Mode: ...' or '*Mode: ...'.
I think these are the modes the driver is reading from some 'magic' place and
maybe the stared ones are 'matches' to the DCC mode lines. I think what I need
to do is update this 'magic' place with a low-level program (probably
eventually run in /etc/rc.local or someplace like that) that will add in a
'Mode' -- I did this *years* ago with little machines with Intel video chips
and 16:9 monitors. But I am totally blanking on the command to use. I find
using a 4:3 video mode on a 16:9 monitor somewhat unusable.
I running CentOS 5.11 w/Xen. The video chipset is a NVIDIA Corporation C77
[GeForce 8200] (rev a2). I am using stock CentOS 5 drivers and libraries
(slightly out of date).
--
Robert Heller -- 978-544-6933
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
heller@xxxxxxxxxxxx -- Webhosting Services
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