X server Resolution Catch-22 Fedora 12

Adam Jackson ajax at redhat.com
Mon Nov 23 15:57:17 UTC 2009

On Sun, 2009-11-22 at 14:30 -0800, Chuck Forsberg WA7KGX N2469R wrote:
> I have been using a 1993 Viewsonic 21 monitor for
> the console on the omen.com server.  The old jug
> isn't as sharp as it once was, but it still can do 1024x768
> or better.
> Upon installing Fedora 12, I discovered that there in
> no longer a reasonable way to set anything higher
> than 800x600 with Xvesa or the default driver for
> Nvidia.  This is a major breakage as many applets are
> unusable at 800x600, including system management.
> Some of the menu is off the screen and there is no
> apparent way to get them to appear on screen.

If this worked before and doesn't work now, it's almost certainly
because the I2C code in the kernel isn't doing as good a job as the I2C
code in X used to.  So we'd fail to get EDID from the display, and fall
back to smaller sizes.

dmesg should carp if EDID fails.

- ajax
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